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-Assess the legality of the uses of force according to the rules and principles of international humanitarian law for the following movie: “Eye in the sky.”

– Discuss the rules governing the different dimensions of an armed conflict (such as the rules related to whether a conflict is an int’l or non-int’l armed conflict, the rules related to targeting and civilian protections, the rules related to combatants and non-combatants, etc). 

– Discuss how those rules apply to the film. Does the film depict violations of the laws of war? If so, which ones and where? 

The Unintended Consequences of War:
Self-Defense and Violence against Civilians

in Ground Combat Operations1,2

M A R C U S S C H U L Z K E

University of Leeds

Although extensive research has been done on the causes of violence
against civilians, it is usually directed at explaining why civilians are delib-
erately targeted or how militaries organize themselves in ways that lead
soldiers to endanger civilians. As I show, many civilians are injured or
killed by members of armed forces who strive to comply with the norms
of war. Some attacks on civilians during ground combat operations in
contemporary wars can be explained in terms of the tension soldiers
experience between their indefeasible right of self-defense and their un-
certainty about the identity and location of civilians on the battlefield. I
illustrate this tension and explore its consequences by drawing on inter-
views with American and British veterans of the wars in Afghanistan and
Iraq. This helps to explain the persistence of attacks on civilians even as
the American and British armed forces make greater efforts to respect
noncombatant immunity.

Keywords: civilian casualties, war, military, Afghanistan, Iraq

The principle of noncombatant immunity (PNCI), which forbids civilian targeting
and indiscriminate uses of force that put civilians at high risk of being harmed, is
an almost universally accepted norm. It is one of the basic tenets of just war the-
ory (Walzer 1977; Orend 2006; Lee 2012), a core element of international human-
itarian law (Gardam 1993, 1999), and a fundamental value of most armed forces’
ethical codes (Toner 1995; Cook 2004). The importance of protecting civilian
lives is regularly proclaimed by state leaders (Ben-Porath 2007) and shapes citi-
zens’ expectations of how wars should be waged (Sapolsky and Shapiro 1996;
Gentry 2006; Walsh 2014). Nevertheless, states continually inflict heavy civilian ca-
sualties during armed conflicts (Slim 2010; Rothbart and Korostelina 2011;
Tirman 2011). This raises the question of why violence against civilians persists de-
spite the appearance of widespread support for the PNCI.

One potential answer to this puzzle is that belligerents willfully violate the PNCI
when they have overriding strategic, cultural, or personal motives for doing so.
Many studies offer this type of explanation by exploring the reasons why violent
organizations (Harff 2003; Mitchell 2004; Valentino, Huth, and Balch-Lindsay
2004; Downes 2006, 2007, 2008; Kalyvas 2006; Valentino, Huth, and Croco 2006;
Hultman 2007) or individual combatants (Fujii 2013; Manekin 2013) choose to

1Support for this research was provided by a Franklin Research Grant from the American Philosophical Society.
2I would like to thank the veterans who shared their experiences with me, the anonymous peer reviewers, the

editors of ISP, and the American Philosophical Society for the invaluable assistance they provided.

Schulzke, Marcus (2016) The Unintended Consequences of War: Self-Defense and Violence against Civilians in
Ground Combat Operations. International Studies Perspectives, doi: 10.1093/isp/ekv008
VC The Author 2016. Published by Oxford University Press on behalf of the International Studies Association.
All rights reserved. For permissions, please e-mail: [email protected]

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attack civilians. These studies’ shared focus on deliberate violence against civilians
leads them to suggest that armed forces have a high degree of control over the ci-
vilian casualties they inflict. The persistence of civilian casualties correspondingly
indicates an unwillingness to abide by the PNCI.

Others attribute attacks on civilians to institutional characteristics that, while
not direct endorsements of violence against civilians, increase its likelihood in
fairly predictable ways. Examples of these institutional characteristics include risk
management strategies (Benvenisti 2006; Rasmussen 2006; Smith 2008; Levy
2010), internal norm enforcement mechanisms (Kahl 2007; Dickinson 2010), and
weapons technologies (Der Derian 2009; Zehfuss 2011; Kaag and Kreps 2014).
From this perspective, violence against civilians is indirectly chosen because orga-
nizations have some ability to control these institutional causes.

These studies provide strong evidence that a great deal of violence against civil-
ians can be accurately described as resulting from deliberate targeting decisions,
from institutional design decisions, or from some combination of the two. They
are particularly valuable when accounting for variance in the levels of violence
cross-nationally or across time. However, my contention is that the causal mecha-
nisms these perspectives identify cannot account for all the violence against civil-
ians, especially attacks perpetrated by armed forces that show a high degree of
respect for the PNCI and that appear to make genuine efforts to minimize civilian
casualties. The existing explanations of violence against civilians are primarily
based on elite or organizational decisions that cause or allow analysts to overlook
the reasons why individual soldiers harm, or at least endanger, civilians. I will use
interview data to show that some attacks on civilians in ground combat operations
are the unintended by-product of the tension between two structural conditions
that exist regardless of belligerents’ efforts to respect noncombatant immunity.

The first structural condition is uncertainty. Combatants are frequently un-
aware of which perceived threats are real or imagined (identity uncertainty) and
where civilians are on the battlefield (locational uncertainty). It is well known that
uncertainty is compounded in wars against nonuniformed opponents because of
the lack of clear visual indicators that might facilitate target identification (Kutz
2005; Reisman 2006). However, the concealment offered by vehicles and struc-
tures presents an additional barrier to properly identify enemy combatants, even
when combatants wear uniforms or openly carry weapons. Vehicles and structures
can completely conceal enemy combatants and civilians, making it difficult to de-
termine when potential threats are real and when civilians are in close proximity
to enemy combatants. Faced with insuperable uncertainty in these two forms,
combatants may have enormous difficulties predicting how their actions will affect
civilians.

The second structural condition is the indefeasible right of self-defense, which
raises an exception to the rules of engagement (ROE) that govern soldiers’ con-
duct. The right of self-defense permits soldiers to use force to protect themselves
when they feel threatened, regardless of their ROE or the risk to civilians.
Nevertheless, identity and locational uncertainty complicate the application of
the right of self-defense in two ways that put civilians at risk. First, identity uncer-
tainty hinders soldiers’ efforts to determine when potential threats are real and
when they are imagined. If they lack vital information about when they are threat-
ened and by whom, soldiers face the dilemma of either responding to apparent
threats with lethal force, at the risk of inadvertently harming civilians, or acting
with restraint, at the risk of being killed by misidentified enemy combatants
(Schulzke 2013). Second, when soldiers contend with known threats from enemy
combatants, they may be unable to determine whether civilians are at risk because
of locational uncertainty. Acting defensively against known enemy threats that
may be in close proximity to unseen civilians can lead soldiers to inadvertently
harm innocent bystanders.

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Accidental violence resulting from soldiers exercising their right to self-defense
under conditions of profound uncertainty is extremely difficult to prevent.
Uncertainty is a pervasive condition of war, which may be mitigated with better in-
telligence collection (see Lyall and Wilson 2009), but cannot be completely
overcome—especially in the circumstances that are identified in my interviews.
And the right of self-defense is generally treated as a fundamental right that sol-
diers cannot be deprived of and that provides the moral grounds for authorizing
them to use lethal force during war (Walzer 1977). Any efforts to impose stricter
constraints on soldiers may reduce some unjustified attacks, but would be unable
to prevent accidental attacks in which soldiers are acting defensively against per-
ceived threats. These conditions may exist during any conflict in which soldiers
are seen as having a right to self-defense, yet they become particularly important
for explaining the persistence of violence against civilians when armed forces
make a concerted effort to improve compliance with the PNCI, as the American
and British militaries did during the wars in Iraq and Afghanistan (Kahl 2007).
Moreover, these structural conditions that lead to accidental violence against civil-
ians may persist whenever armed forces recognize that soldiers have a right of
self-defense that can be enacted with lethal force, making them generalizable be-
yond the cases that I analyze here.

Explaining the Persistence of Violence against Civilians

Much of the literature on violence against civilians is directed at explaining why
organizations or individual combatants choose to attack civilians (Harff 2003;
Mitchell 2004; Valentino, Huth, and Balch-Lindsay 2004; Downes 2006, 2007,
2008; Kalyvas 2006; Valentino, Huth, and Croco 2006; Hultman 2007). Usually
this decision is explained as being the result of strategic calculations made by
elites, such as policymakers or high-ranking military commanders. Although these
studies do not deny that some violence against civilians may be unintentional,
they usually refrain from discussing this type of violence in any detail or consider-
ing why it occurs.

Downes (2006, 2007, 2008) offers a prime example of this perspective, as he
finds that two factors—both rooted in strategic incentives—explain the decision
to attack civilians. First, he argues that belligerents tend to target civilians out of
desperation to win. “According to the desperation logic, states that are embroiled
in costly and prolonged struggles become increasingly desperate to snatch victory
from the jaws of defeat and reduce their own losses” (Downes 2008, 3). Second,
attacking civilians facilitates territorial conquest by preemptively eliminating dis-
senters which assists in tightening control over the conquered territory. These two
mechanisms allow Downes to explain civilian targeting with a single underlying as-
sumption: That belligerents act based on “a preference for victory” (2008, 11).
These causal mechanisms and the underlying idea that attacks on civilians follow
from a particular incentive structure lead to a plausible and parsimonious theory
of why civilians are targeted, yet Downes fails to give much attention to the possi-
bility that some attacks may be perpetrated by combatants who intend to comply
with the PNCI.

A number of other studies attribute violence against civilians to militaries’ or
states’ institutions. The focus here is generally on the structure of organizations,
rather than on elite decisions, yet the organizations are generally described as em-
bodying elites’ attitudes toward civilians. One possibility is that violence against ci-
vilians is a by-product of risk management strategies (Walzer 1977, 61; Shaw 2002;
Kasher and Yadlin 2005; Benvenisti 2006; Rasmussen 2006; Smith 2008; Levy
2010; McMahan 2010). By this account, armed forces indirectly choose to endan-
ger civilians via decisions to displace the risk to their own forces. For example,
Smith (2008) argues that despite war’s unpredictability, belligerents can make

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fairly clear decisions about how to balance risks to their own forces against the
risks of harming civilians. “The fog of war can never be dispelled completely, but
to a large degree, modern strategies fix the levels of risk that combatants and non-
combatants face. Civilian casualties flow from policy preferences in predictable
ways” (Smith 2008, 145). This suggests that structural conditions like uncertainty
play a fairly minor role in explaining violence against civilians and that belliger-
ents indirectly choose to attack civilians even when they do not directly target
them.

Some commentators are concerned that new military technologies may facili-
tate violence against civilians. By some accounts, weapons like precision-guided
munitions and drones lower inhibitions against attacking civilians by making it
easier to hide casualties (Der Derian 2009; Zehfuss 2011). Others contend that
these weapons hinder efforts to distinguish between combatants and noncombat-
ants by removing humans who are capable of making that distinction from the
battlefield (Kreps and Kaag 2012; Kaag and Kreps 2014). Conversely, the use of
advanced weapons by powerful states could arguably force weak states and non-
state actors to attack civilians out of desperation (Killmister 2008). Thus, the
choice to develop these weapons is treated as a choice to wage wars in ways that
increase the likelihood of civilian casualties.

Other studies explain attacks on civilians with reference to how violent organi-
zations enforce norms. Kahl (2007) and Dickinson (2010) argue that the presence
of norm and law enforcement mechanisms in the US military help to discourage
violence against civilians. Kahl’s work is particularly important, as he goes beyond
other studies in recognizing that there are limits in the extent to which militaries
can conform to the PNCI. Kahl correctly notes that the US military has made a
concerted effort to respect civilian immunity and that it is far more sensitive to ci-
vilian casualties than it was in previous wars. Its policies are informed by the “anni-
hilation-restraint paradox”—“a commitment to the use of overwhelming but
lawful Force” (Kahl 2007, 8). This suggests that some violence against civilians
may be attributable to residual institutional imperfections. However, Kahl also
briefly discusses the kind of accidental violence against civilians that I will focus
on in the following sections and indicates that this type of violence will persist de-
spite institutional reforms. My analysis will build on Kahl’s by exploring the rea-
sons why stricter norm enforcement cannot eliminate violence against civilians.

Although most of the literature on violence against civilians addresses organiza-
tions and the choices made by elites, several studies have investigated why individ-
ual soldiers attack civilians. These tend to focus on attacks that reflect a lack of
respect for civilian immunity. Manekin (2013) seeks to explain why soldiers en-
gage in “opportunistic violence,” which is a personal decision to attack civilians
without orders to do so. Using a survey of Israeli Defense Forces (IDF) veterans,
she shows that the incidence of this kind of violence increases as soldiers spend
longer periods of time in contact with civilians. Manekin hypothesizes that oppor-
tunistic violence results from growing resentment between soldiers and civilians.
Similarly, Fujii (2013) contends that soldiers who engage in extralethal violence—
violence that goes beyond what is necessary to kill and that often involves extreme
attacks on civilians—are influenced by a performative logic. Soldiers play particu-
lar roles that encourage them to carry out atrocities and enable them to disassoci-
ate themselves from their actions.

As this overview of the literature shows, violence against civilians is generally
studied as a type of direct choice on the part of elites or indirect choice that is evi-
denced in organizational behavior. And the relatively limited research on noneli-
tes is likewise primarily concerned with intentional violence. Of course,
explanations based on institutional decisions and those based on decisions by
elites or nonelites are not mutually exclusive. Some accounts of violence against
civilians, and unethical conduct more generally, explain how organizational

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decisions may enable individual soldiers to act wrongly by creating opportunities
for misconduct (Osiel 1999). Others show that individuals can influence militar-
ies’ institutions and cultures in ways that promote misconduct (Pryer 2009, 8;
Couch 2011; Fujii 2013). This leads some of the research on direct decisions to at-
tack civilians to overlap with studies that focus on institutional causes.

Existing studies of violence against civilians have identified important causal
mechanisms that can explain some types of attacks, yet they generally overlook
the ways in which the structural conditions of the battlefield may lead combatants
to inadvertently attack civilians and the extent to which these structural
conditions are beyond elite or organizational control. Aside from a few studies
that attempt to account for “collateral damage” that is inflicted on civilians as a
by-product of attacks on military targets (Hultman 2012; Cronin 2013; Kahl
2007), there seems to be limited attention to the reasons why civilians may be
unintentionally harmed. A more complete view of attacks on civilians should not
only account for the violence that is directly or indirectly chosen, but also the vio-
lence that persists even when belligerents seem to show a genuine commitment
to minimizing civilian casualties. Moreover, research on this topic could benefit
from greater attention to the experiences of the nonelite soldiers who are directly
involved in attacks that injure or kill civilians.

Methodology

I illustrate the tension between uncertainty and the right of self-defense using sto-
ries drawn from interviews that I conducted with thirty-four US Army soldiers,
twelve British Army soldiers, and eight British Royal Marine Commandos. All par-
ticipants were veterans of combat operations in Afghanistan or Iraq between 2003
and 2011. Each had served at least one tour of duty in a unit that was deployed to
one of these conflicts, though the average number of tours was three for
American participants and two for British participants. I interviewed the
American soldiers in 2011 and 2012, the British Army soldiers in 2012, and the
Royal Marine Commandos in 2014. Fifteen of the American soldiers were on ac-
tive duty and were contacted in person at Fort Bragg, North Carolina. The other
American soldiers and all the British soldiers and marines had left service, though
some worked as military contractors. These participants were contacted through
veterans’ organizations or were referred to me by other participants using snow-
ball sampling.

All interviews were semistructured and lasted between one and two hours. The
interviewees were asked to describe some of the most difficult ethical dilemmas
they encountered while deployed, without being directed to talk about any partic-
ular event or type of ethical dilemma (see the Appendix for a list of the questions
that were asked). Almost all interviewees said that the most ethically challenging
situations they encountered were those in which uncertainty and the need to act
in self-defense led them or other soldiers to endanger civilians. They found that
three types of situations were particularly apt to raise the tension between self-de-
fense and uncertainty: guarding traffic control points (TCPs), protecting vehicles
in convoys or patrols, and attacking enemy combatants who were inside civilian
structures. The stories I recount here are only a few of the many interviewees told
and were selected because they exemplify the events that were most frequently
reported.

The number of interviewees I consulted is too small to permit reliable generali-
zations about how common unintentional attacks on civilians are compared to at-
tacks that are directly or indirectly chosen. However, the interviews are helpful for
illustrating how and why soldiers inflict accidental civilian casualties. They also
provide a sense of how soldiers explain their involvement in attacks. Individual
soldiers’ experiences provide vital information about conflicts, which is often

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overlooked in international relations research because of a general tendency of
focusing on elites and belligerent organizations (Parashar 2013; Sylvester 2013).
Interviewing veterans and others who have first-hand knowledge of war provides a
way of gaining a new perspective on what wars are like, which may be inaccessible
using other research methods (Lomsky-Feder 1995; Parashar 2013; Pain 2015). As
Mirra points out, interviews are the only way to get at the critical issue of: “What
goes through a soldier’s mind when he or she witnesses (or participates) in kill-
ing?” (2008, 1). In this case, what goes through a soldier’s mind when he or she
witnesses or participates in attacks directed against civilians?

There are, of course, limits to this approach. First, the interviews do not give a
clear sense of how common accidental attacks on civilians are. Indeed, the inter-
views I conducted indicate that it may be impossible to grasp the extent of this
problem because the people who are attacked are often unidentified or have con-
tested identities. Second, soldiers may give biased accounts of their own actions.
Of particular concern is that they may attempt to excuse intentional or negligent
attacks on civilians by saying that these were accidental. Nevertheless, the pattern
of soldiers providing similar explanations for violence against civilians in my inter-
views, as well as in many narrative accounts of combat in Afghanistan and Iraq
(Hedges and Al-Arian 2008; Spiller 2014), suggests that the phenomenon I iden-
tify is genuine. Moreover, the risk of bias is an unavoidable consequence of ex-
ploring the issue of violence against civilians from the perspective of those who
are the most directly involved in it.

Operationalizing the PNCI

The exact number of civilian casualties caused by the wars in Afghanistan and
Iraq are heavily contested, with most estimates of the total casualties inflicted by
fighters on both sides ranging from 18,000 to 21,000 for Afghanistan (Costs of
War 2014a; Rasmussen 2015) and from around 100,000 to nearly 500,000 for Iraq
(Iraq Study Estimates 2013; Costs of War 2014b). Whatever the true numbers are,
it seems fair to conclude that the American and British armed forces were respon-
sible for inflicting thousands of civilian casualties during those wars. Much of the
existing research on violence against civilians suggest that our search for the
causal mechanisms behind these attacks should be directed either at discovering
the incentives that led the American and British militaries to disregard civilian im-
munity or at analyzing the institutional dynamics that resulted in the attacks.
However, the American and British armed forces’ have made concerted efforts to
comply with the PNCI, which indicates that such explanations may not be able to
account for all the civilian casualties.

Since the Vietnam War, the US military has devoted considerable attention to
training soldiers to make independent ethical decisions. Each branch of the US
military has its own code of values that soldiers are trained to embody and each
provides ethics education (Challans 2007; Robinson 2007; Cook 2009). The
British military has made similar efforts to improve compliance with the norms of
war. This is evident from publications that affirm the importance of military
ethics, such as The Values and Standards of the British Army (British Army 2008), the
formal ethics education given to officers (Deakin 2008; Mileham 2008), and the
development of ethics training activities that specifically address the proper treat-
ment of civilians (Ledwidge 2011, 177).

The trajectory of weapons development and doctrinal innovations in both
countries likewise signal a willingness to comply with the PNCI. Each military has
sought to develop more discriminate and proportionate weapons, such as preci-
sion-guided munitions, drones, and an assortment of nonlethal weapons (Mandel
2004; Krishnan 2009; Singer 2009). They have likewise framed their counterinsur-
gency doctrines to emphasize the importance of seeking nonlethal methods of

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conflict resolution (Mockaitis 1995; Chin 2007; Kilcullen 2010; Perez 2010).
These new weapons and doctrinal innovations have been heavily criticized for fail-
ing to achieve their goals and for introducing new ethical problems (Branch
2010; Gilmore 2011; Boyle 2013; Dunn 2013; Kaag and Kreps 2014). Nevertheless,
the range of efforts to reduce civilian casualties suggests that the American and
British armed forces are making a genuine effort to respect noncombatant
immunity.

To understand the persistence of violence against civilians, it is useful to direct
more attention to soldiers’ experiences and to inquire into what they think causes
the attacks that they are involved in. From the perspective of the individual sol-
diers in the US and British armed forces, the PNCI is primarily operationalized in
ROE, which explain when and how soldiers are permitted to use force. ROE are
typically framed by military commanders with the help of their legal advisors.
They are then filtered down through the chain of command to allow officers in
intermediary command positions to impose additional restrictions (British Army
2010, 2–11; Department of the Army 2013).

Despite the variance of ROE cross-nationally and even across various units
within the same military, it is possible to identify several consistent features. First,
the ROE employed by United States and British forces in Iraq and Afghanistan in-
variably forbid the targeting of civilians and instructed soldiers to exercise re-
straint during combat to avoid inflicting civilian casualties. Because ROE must
agree with international law, they will always have to prohibit soldiers from target-
ing or recklessly endangering civilians. This in itself is a powerful indication that
at least some of the civilians who were attacked by American and British soldiers
were attacked despite efforts to impose stronger institutional constraints on how
soldiers act.

Second, ROE are frequently supplemented by escalation of force (EOF) guide-
lines that provide a series of actions, gradually increasing in lethality, that soldiers
can take when confronted with potential threats. For example, the EOF sequence
commonly used by American forces in Iraq and Afghanistan was shout, show,
shove, shoot, shoot. This means that soldiers encountering a potential threat were
supposed to shout verbal warnings, display their weapons, use nonlethal force,
fire warning shots, and finally, shoot to kill. As we will see later, EOF are meant to
alleviate the problems associated with identity and locational uncertainty.

Third, ROE include exceptions that allow soldiers to exercise their individual
right to self-defense. Soldiers can deviate from the ROE, and even be excused for
harming civilians, when taking reasonable actions to defend themselves against a
threat. The ROE cards given to American soldiers make the self-defense excep-
tion explicit, as they open with statements such as “[n]othing on this card pre-
vents you from using necessary and proportional force to defend yourself” or
“[n]othing in these rules limits your inherent right to take action necessary to de-
fend yourself.”3 These statements are usually highlighted or printed in bold type
for emphasis. The ROE cards also tend to frame restrictions on the use of force
with explicit self-defense exceptions. For example, one ROE card used in Iraq in
2003 said “[d]o not fire into civilian populated areas or buildings unless the en-
emy is using them for military purposes or if necessary for your self-defense”
(Human Rights Watch 2003, 138). British ROE cards do not always explicitly refer
to the right of self-defense. However, the right is considered to be a fundamental
and permanent authorization. The British Defence Doctrine affirms that “[a]n
enduring accompaniment to ROE is the inherent and inalienable legal right to
act in self-defence, where such activity is both reasonable and necessary” (Ministry
of Defence 2008, 1–16).

3Both ROE statements were communicated in interviews.

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Uncertainty and Defensive Violence

Like the PNCI, the right of self-defense is a core element of customary interna-
tional law (Dinstein 2001; Rodin 2003; Trumbull 2012) and is widely considered
to be an inalienable right by moral and legal theorists (Thomson 1986; McMahan
2002). Soldiers’ authorization to act in self-defense tends to be stated in vague
and highly subjective terms in official publications, and when soldiers are given
verbal instructions on how to exercise that right, yet this is unavoidable. The cir-
cumstances under which soldiers may exercise the right of self-defense must be
loosely defined because soldiers have to guard against myriad types of threats,
some of which may be unanticipated by their commanders. Judgments about
when the right of self-defense can be invoked must also be somewhat subjective
because it is an individual right. As the bearers of the right of self-defense, individ-
ual soldiers must be primarily responsible for determining when something
threatens them.

The right of self-defense provides soldiers with an extremely permissive authori-
zation to act in ways that may endanger civilians. And because soldiers are allowed
to go beyond the ROE to defend themselves, increasing the strictness of ROE can-
not put an end to defensive violence against perceived threats that may turn out
to be illusory. Prohibiting soldiers from acting on their own initiative to defend
themselves is untenable, as this would deprive them of a fundamental right and
render them ineffective against enemy forces. Thus, the right of self-defense pro-
vides grounds for soldiers to inflict nonintentional violence on civilians, and this
violence cannot be constrained by ROE or other institutional mechanisms with-
out breaching soldiers’ rights.

Of course, there are objective signs of when someone is threatening, which pro-
vide some guidance for determining when the right of self-defense can be justifi-
ably invoked. Soldiers cannot claim to be acting defensively if they deliberately
target civilians or if they use disproportionate force that is apt to inflict “collateral
damage.” Soldiers must, at a minimum, have a reasonable suspicion that there is a
genuine threat and they must only use the level of force that is necessary to elimi-
nate that threat. This is why visual signifiers of hostility, such as wearing uniforms
and carrying arms openly, are so important. They mark combatants and make it
easier for soldiers to make informed judgments about who is a genuine threat.
The problem is that visual signifiers are often unavailable when soldiers have to
make critical decisions about the use of force.

It is well known that unconventional fighters may deliberately conceal their
combatant status by refusing to wear uniforms and by opportunistically discarding
their weapons to blend in with civilian populations (Kutz 2005; Reisman 2006).
Unconventional fighters’ efforts to hide among civilians create serious challenges
when soldiers are attempting to distinguish combatants from noncombatants.
However, it is important to avoid linking this difficulty too closely to unconven-
tional fighters’ refusal to wear uniforms, as this would suggest that the tension be-
tween uncertainty and the right to act in self-defense only arises during
unconventional wars. The stories that I will discuss later suggest that although the
challenge of identifying nonuniformed combatants was serious, it was over-
shadowed by the environmental obstacles of urban battlefields that may be used
by uniformed and nonuniformed combatants alike (Antal 2003; Joes 2007;
DiMarco 2012).

Although some interviewees did recall instances in which they were unable to
determine whether a nonuniformed individual was threatening, these were sur-
prisingly uncommon. Soldiers generally found that they could identify insurgents
by their type of civilian dress, age, sex, and, most importantly of all, whether they
appeared to be armed. By contrast, soldiers invariably struggled to determine
whether the occupants of civilian vehicles or structures were threatening and

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when civilians might be in close proximity to enemy fighters located in vehicles or
structures. Uncertainty in these instances sometimes led soldiers to defend them-
selves against apparent threats that turned out to be civilians or against known
threats that were in close proximity to unseen civilians. Therefore, although the
interviewees described challenges of identifying insurgent fighters, these chal-
lenges could also exist in combat against uniformed enemy combatants using ci-
vilian vehicles or operating in urban areas.

Encountering Civilians at TCPs

Checkpoints, which are also known as TCPs or snap TCPs when they are estab-
lished temporarily to catch insurgents by surprise, are extremely dangerous for ci-
vilians and soldiers alike. They produce frequent interactions between soldiers,
enemy combatants, and civilians under conditions that make it likely for check-
point guards to misidentify civilians as threats. Most vehicles that approach check-
points conceal their occupants. This causes identity uncertainty by denying
guards any visual information that could indicate whether the occupant is hostile.
Checkpoint guards also have an urgent need to be able to defend themselves
against unexpected threats. Soldiers must remain in stationary positions, often
with minimal cover, and allow a steady flow of unidentified people to approach
them. Soldiers are at risk of being attacked by insurgents hidden inside of vehicles
or nearby buildings. Most threatening of all is the prospect that a suicide bomber
might approach a checkpoint and detonate a bomb before there is an opportu-
nity to respond. The risks of sudden attack make it critical for soldiers to be able
to defend themselves against suspicious vehicles.

EOF procedures are supposed to deter civilians from acting in ways that appear
threatening, such as approaching a checkpoint at a high speed or failing to stop.
As Bagwell (2008, 5) says, “soldiers were too often misidentifying threats and
shooting the wrong people—people who posed no actual threat to them”. The
soldiers I interviewed found that correct threat identification was exceedingly dif-
ficult even with the EOF. One problem was that soldiers may have a very limited
time in which to run through the escalation sequence. A US Army TCP
Operations Smartcard published in 2010 estimated that soldiers at a checkpoint
have around 11.6 seconds to stop a vehicle using the EOF before it reaches the le-
thal force zone (Center for Army Lessons Learned 2010). This estimate was based
on the assumption that the EOF will begin when approaching vehicles are 300
meters away from the checkpoint, which is unlikely in dense urban areas. Thus,
while the EOF helped to identify when defensive violence could be used, the prac-
tical demands of choosing whether to respond to a potential threat with lethal
force were such that soldiers had no choice but to rely heavily on their own judg-
ment, which was seriously impeded by uncertainty.

Civilians approaching checkpoints may also be affected by uncertainty for a vari-
ety of reasons. People traveling in unfamiliar areas may not know where the local
checkpoints are, and those traveling along familiar routes may be surprised by
snap TCPs. Those who are illiterate may not be able to read the warning signs—
or signs may not be posted at all. Some may misinterpret warning shots for an at-
tack and attempt to speed away from the gunfire. Still others may fail to stop be-
cause they are scared, driving drunk, or rushing to take someone to the hospital.
The soldiers I interviewed reported instances of civilians attempting to pass check-
points for each of these reasons and many others. Thus, small errors or misunder-
standings led civilians to react to checkpoints in ways that caused the guards to
feel threatened, thereby creating situations in which soldiers’ had to decide
whether to act in self-defense without being certain of whether they were really
threatened.

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An incident that was typical of those interviewees reported encountering at
checkpoints involved a sergeant in the American Army who was deployed to
Baghdad in 2004. Although checkpoint guard duty was always extremely stressful,
the sergeant felt particularly anxious during one posting after his squad had
come under attack from insurgents hidden in vehicles during their two previous
shifts. Late in the day, a car approached the checkpoint and failed to stop as it
passed the warning signs. The soldiers fired warning shots, but these only made
the car go faster and increased their fears of attack. The soldiers responded by
shooting at the car’s engine and tires in an effort to disable the vehicle without
killing its occupants. The gunfire caused the car to swerve off the road and stop,
allowing the soldiers to approach it. Inside they found an unarmed man who had
been wounded by the shots.

When questioned by a translator, the driver said that he was illiterate and un-
able to read the checkpoint’s caution signs. The warning shots had surprised the
driver and caused him to accelerate because he thought he was under attack and
became desperate to find cover. The interviewee emphasized that this kind of in-
cident was common during his two deployments and that civilians who came un-
der fire generally had reasonable excuses for failing to stop. However, this
particular story stood out in the sergeant’s mind because he later heard rumors
that the unarmed man died from his injuries. He described the shooting as a
tragic event that happened despite his wishes to avoid harming innocent Iraqis.
“I was there to help people,” he told me, “we all were. But you still have to protect
yourself if you want to make it home.” It was telling that the soldier explained the
attack as a tragedy that followed directly from excusable steps he and the other
soldiers had taken to defend themselves against a potential threat.

Another interviewee, who was a corporal in an American cavalry unit, recalled
guarding a TCP in Baghdad on a starless night in 2006. He saw the single head-
light of an approaching motorcycle and fired two warning shots when it passed
the checkpoint warning signs without slowing. The gunshots caused the vehicle to
stop immediately, but the corporal was horrified to find that what had appeared
to be a motorcycle in the darkness was actually a car with a broken headlight. The
warning shots that were meant to pass harmlessly next to a motorcycle had instead
gone through the windshield of a car with a family inside. Fortunately, the bullets
missed the passengers, but the soldier was visibly upset as he remembered how
close he had come to killing the family. Like many of the interviewees, the soldier
said that he witnessed other instances in which soldiers attempting to halt vehicles
had inadvertently injured or killed civilians, but he declined to describe these in
detail.

In both of these stories, as well as in the many similar incidents that inter-
viewees reported, soldiers endangered civilians through the use of defensive vio-
lence. Moreover, these were instances in which it is doubtful that stricter ROE or
other institutional constraints would have prevented the attacks. The soldiers’
ROE and EOF provided some guidance, yet the choice of whether to use force
was ultimately a matter of whether the soldiers felt that they had to protect them-
selves and their comrades from a potential threat, which could not be clearly
identified based on the limited information available.

Protecting Convoys and Patrols

Interviewees who protected convoys or patrolled in vehicles were regularly forced
to decide whether to attack vehicles that appeared to be threatening, but whose
occupants could not be seen. Many interviewees were uncertain of who was inside
other vehicles even after attacking them because the standard operating proce-
dure was usually to speed away from contact to avoid being ambushed. As one

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American soldier told me, “We shoot the cars because we might be under attack,
and if you’re in the middle of an ambush you can’t stop everything for an investi-
gation.” Thus, identity uncertainty about vehicles’ occupants was frequently total
and interfered with efforts to ascertain when civilians were mistakenly attacked,
thereby preventing soldiers from even knowing when they caused civilian
casualties.

A private in an American cavalry unit who was deployed to Baghdad in 2004
and 2006 said that he routinely operated a heavy machine gun that was mounted
on one of the convoy escort vehicles. This gave the soldier enormous firepower,
though at the expense of making it more difficult to use low levels of force. Shots
meant to disable a vehicle’s engine or to destroy its tires could easily kill a vehi-
cle’s occupants, especially when driving at high speeds that interfered with aim-
ing. This soldiers’ exposed firing position also made him feel vulnerable to
enemy attacks, which, he said, gave him reason to use lethal force to defend him-
self against potential threats on multiple occasions.

The soldier described one incident that was particularly memorable because it
was one of the few times he discovered the identity of someone who was attacked.
The private was positioned in the lead vehicle of a large convoy traveling along a
two lane road when a car approaching from the other lane failed to pull off the
road as it came within range of the convoy. The commander of the private’s vehi-
cle gave the order to engage the approaching car, but on this occasion, the pri-
vate did not shoot. “I wasn’t trying to disobey the order” he told me, “I just froze.
I wasn’t afraid either. It didn’t feel right.” The private went on to explain that he
had fired at other vehicles approaching in the exact same way on many occasions,
but that in this one instance, the feeling of uneasiness made him hesitate for the
few seconds it took for other soldiers to open fire. That gunfire sent the car off
the road as the convoy sped away from what might have been an insurgent threat.

Later, the private learned that a team investigating the incident discovered two
unarmed adults inside the vehicle. The private said that this gave him a feeling of
relief. He did not, as he worried, put himself and his comrades in danger by not
shooting and he was not responsible for killing innocent people. When I asked
him whether he was concerned about the possibility that he might have attacked
civilians when he shot at other vehicles, he said that he had some qualms about
this but that they were outweighed by his own defensive needs. “You just can’t
take the risk” he said. “You have to defend yourself when someone’s a threat. We
don’t know when they’re armed, so if they’re acting threateningly, you know, if
they’re not responding to our warnings and ignoring our warning shots, then
they’re a threat.” He went on to cite his inherent right of self-defense as the rea-
son for shooting at vehicles despite the persistence of identity uncertainty. “It’s
right there in the ROE,” he said. “We are authorized to defend ourselves, and
sometimes we have to.”

One of the British Royal Marine Commandos I interviewed said that he and his
fellow marines frequently had to shoot at or ram vehicles during their patrols.
The chances of being ambushed were too high to do otherwise, he told me. The
marine reported several instances in which this led to inadvertent attacks on civil-
ians. In one fairly typical event, he was driving the lead vehicle through the nar-
row streets of an Afghan town when a car pulled in front of the patrol. “I hit the
gas and knocked it out of the way,” he said. “You don’t have much choice, since
they could be boxing you in for an ambush.” The marine saw a terrified old man
inside the vehicle as he hit it, but the patrol had to leave the scene of the accident
immediately in case the man was being used as bait for a trap.

The marine was emphatic when telling me about the importance of not harm-
ing civilians. As he put it “marines don’t shoot civvies.” Nevertheless, he was also
quick to say that he was justified in attacking anyone who appeared to be danger-
ous. When I asked whether it was difficult to decide when self-defense was

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justified he told me that “when you’re in combat, or might be attacked, the deci-
sion is made for you.” I then asked whether he was bothered by the possibility
that he could have injured or killed civilians hidden inside of vehicles when they
were rammed out of the way to which he responded by explaining that civilians
have a responsibility to not act threateningly. “I don’t want to kill any civvies, but I
wouldn’t lose sleep killing someone over their own stupidity.” The marine knew
that this seemed like a callous statement, yet he explained that the persistent
threat of being suddenly attacked made that attitude essential for survival. Thus,
as in the previous examples, the marine explained instances in which he had
harmed, or at least endangered, civilians as being necessary expressions of his
right to self-defense on a battlefield shrouded in uncertainty.

Responding to Enemy Combatants in Civilian Structures

Soldiers from both militaries said that it was common for insurgents in Iraq and
Afghanistan to launch attacks from inside of buildings, including civilian homes.
If they were under enemy fire and in areas that offered little cover, soldiers usu-
ally felt that they had to counterattack quickly and with overwhelming force to
protect themselves. At a minimum, this meant engaging buildings with small arms
fire. When it was available, they might also call for air or artillery support to inflict
heavier damage. This was particularly important when soldiers came under fire
from large compounds in Afghanistan which offered excellent protection from
small arms fire and were extremely dangerous for soldiers to enter when held by
enemy fighters.

When insurgents hidden inside of buildings attacked soldiers who were in ex-
posed positions, there was a clear enemy threat and little doubt that the soldiers
were authorized to act defensively. However, the interviewees were frequently
unsure of whether civilians were present in or around the civilian structures that
were serving as insurgent firing positions. This locational uncertainty left the sol-
diers unaware of whether they might inadvertently harm innocent bystanders and
unable to determine exactly what level of force might be proportionate given the
circumstances. Thus, there was a clear need to act in self-defense, but uncertainty
about the location of civilians in the contested area obscured the potential costs
of doing so.

The British and American soldiers who reported instances in which they came
under attack from insurgents concealed in buildings said that their decisions
about how to respond were heavily influenced by how serious the risk to their per-
sonal security was. When soldiers felt that they were fairly safe from enemy fire
they were generally cautious about counterattacking, preferring to maneuver into
a strong position from which they could direct more selective fire at the enemy
fighters. Some soldiers expressed concern that insurgents would publicize any ci-
vilian casualties inflicted during combat to undermine support for Coalition
forces, and said that this in itself was a powerful reason to exercise caution when-
ever possible. However, interviewees consistently said that they were willing to de-
fend themselves against insurgents even at the risk of harming unseen civilians.

One British Army corporal I spoke with said that he came under attack from
Taliban fighters hidden in civilian buildings dozens of times during his two de-
ployments to Afghanistan. The attacks typically came while British forces were in
an exposed position, such as when they patrolled through open fields. The soldier
and the other members of his unit usually fired back at the Taliban positions, de-
spite the risk of inadvertently hitting civilians, because the lack of cover made
them feel extremely vulnerable. At times, an attack would even open with one or
more of the men in his platoon being shot or struck by shrapnel from an explod-
ing mortar, which made it feel imperative to launch a quick and overwhelming

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counterattack. I asked the corporal whether he was concerned that innocent peo-
ple might be harmed when returning fire. “Not in the moment,” he answered
“only afterwards. When you’re engaged everything happens too fast and you’re
just thinking about surviving. You only really think about it after and you just
hope that any civilians made it through ok.”

The corporal recounted one instance in which his platoon came under fire dur-
ing a foot patrol. As the British soldiers were moving through a shallow irrigation
ditch, gunfire came unexpectedly from one of the large civilian compounds that
are common throughout Helmand. The soldiers’ instinctive response was to take
cover the best they could and to return fire. The presence of an immediate threat
made it essential to counterattack, but it was unclear whether there were any civil-
ians in the compound and this made it difficult to determine what level of force
should be used. The platoon returned fire with small arms and shortly thereafter
its commander called in air support to bomb the compound.

The interviewee told me that he had not given much thought to the possibility
of inflicting civilian casualties while he was shooting because no civilians were visi-
ble. However, he said that several were later found in the wreckage. The soldier
felt that his platoon leader’s decision to call in air support had been justified be-
cause of the imminent threat, yet he thought that less force might have been used
if the patrol had known that civilians were inside the compound. Thus, by the sol-
dier’s account, an attack that killed several civilians was the direct result of the
men in his platoon exercising their right of self-defense by calling in an air strike
that could eliminate the insurgents before any soldiers were wounded or killed.

Conclusion

Although many attacks on civilians may be attributable to deliberate targeting de-
cisions or institutions that lower barriers against attacking civilians, these explana-
tions fail to account for the structural conditions that can lead to attacks even
when armed forces and individual soldiers seem to make genuine efforts to com-
ply with the PNCI. It is impossible to make generalizations about the extent of vio-
lence that is misdirected against civilians based on the relatively small sample of
soldiers included in my interviews. However, the scenarios I have discussed help
to illustrate the mechanisms that can lead to mistaken attacks. Each of the exam-
ples provided by interviewees demonstrates how uncertainty and the right of self-
defense can come into conflict in ways that put civilians at risk.

The checkpoint, convoy protection, and patrol scenarios were instances in
which soldiers were uncertain about whether the vehicles approaching them con-
tained civilians or enemy combatants. This identity uncertainty led interviewees to
feel threatened by any vehicles that did not respond to warnings and EOF proce-
dures, and resulted in soldiers using lethal force in an effort to protect them-
selves. Soldiers were authorized to act defensively in these situations based on the
right to self-defense and generally excused their attacks by appealing to that right,
yet the soldiers’ defensive actions seriously endangered civilians. As the incident
with the car missing a headlight showed, uncertainty sometimes even lead soldiers
to mistakenly attack civilians when they were attempting to defuse a situation with-
out resorting to lethal force. Instances in which soldiers responded to known
threats that might have been near unseen civilians raised the same type of chal-
lenge in a different form. The authorization to use defensive violence was clear
when interviewees came under fire from insurgents positioned in buildings, yet
the cover provided by those buildings was often so strong that soldiers felt com-
pelled to use overwhelming force that was apt to harm civilian bystanders who
were not visible.

Uncertainty and the need to act in self-defense are persistent structural condi-
tions that exist regardless of elites’, organizations’, or individual soldiers’ attitudes

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about civilians and civilian immunity. Soldiers cannot be denied their right to
self-defense and yet they are often unaware of when and how this right may be in-
voked against genuine threats. It may be possible to alleviate the tension between
uncertainty and the right of self-defense to some extent with the application of
better ROE and EOF procedures. Nevertheless, because the right of self-defense
creates an exception to these rules and procedures, it does not seem possible for
these or any other institutional correctives to overcome the problem of attacks be-
ing misdirected against civilians without also infringing on soldiers’ rights.
Stricter ROE and EOF procedures may help to prevent intentional or negligent vi-
olence, but may be suspended when the right of self-defense is invoked.

The structural conditions I identify can help to account for why US and British
armed forces inflicted thousands of civilian casualties in Iraq and Afghanistan de-
spite their efforts to avoid inflicting civilian casualties (Kahl 2007; Deakin 2008;
Mileham 2008; Dickinson 2010) and to assist civilians who were harmed (Tracy
2007; Carroll and Schulzke 2013). The structural roots of some types of attacks
also explain why American and British forces injured and killed civilians even
when doing so was contrary to their counterinsurgency doctrines that prioritized
efforts to earn the trust of indigenous populations in contested areas (Mockaitis
1995; Chin 2007; Kilcullen 2010; Perez 2010).

The tension between the right to self-defense and uncertainty suggests that ci-
vilians will be attacked even when armed forces and individual soldiers attempt to
respect the PNCI and that changing elite opinion and reforming institutions will
not be able to overcome this source of violence. Nevertheless, there are ways that
armed forces could attempt to manage this tension more effectively in the future.
New technologies may be used to reduce uncertainty, alleviate the need to act in
self-defense, or provide soldiers with ways of defending themselves without resort-
ing to lethal force. Reducing uncertainty via more accurate intelligence gathering
and surveillance tools is probably the most challenging of these three potential
routes to improved compliance with the PNCI, especially when fighting takes
place in urban areas or is against irregular enemy combatants. New forms of un-
certainty persistently appear when new intelligence collection tools are deployed,
and at times, these tools may even aggravate uncertainty by producing overwhelm-
ing amounts of data that cannot be used effectively.

Uncertainty seems to be an ineliminable feature of war that new technologies
cannot overcome, yet some technologies that are aimed at reducing the risks sol-
diers face and providing them with alternative means of self-defense appear to be
more promising. Remotely piloted vehicles offer one type of technological solu-
tion to the problem of misdirected defensive violence. By removing soldiers from
the battlefield, they obviate the need to act in self-defense and could, therefore,
be used with stricter ROE that do not permit self-defense exceptions. This is one
of the most compelling reasons for thinking that drones could potentially be
more ethical weapons than piloted vehicles (Strawser 2010; Schulzke 2014).
However, remotely piloted vehicles are not yet prepared to take over the kinds of
ground combat operations described in the interviews and will probably not be
able to replace human soldiers in the foreseeable future. Only the deployment of
armed unmanned ground vehicles could actually remove soldiers from the most
dangerous situations in which they might have to use lethal defensive force.

Armed forces could also make greater use of the many different types of nonle-
thal weapons that are currently in development (Koplow 2006; Davidson 2009).
Optical interrupter light emitting diode incapacitators and lasers may be used to
temporarily blind drivers of vehicles that may be threatening as well as insurgents
operating inside of civilian residences. Radio-beam projectors could be able to dis-
able vehicles’ engines without directly affecting the occupants. Heat rays like the
active denial system could drive enemy combatants out of civilian residences or at
least suppress them for long enough to allow soldiers to withdraw to safer

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positions. And acoustic weapons may be able to emit noises that can deter or even
temporarily disable adversaries.

These types of weapons could enable soldiers to defend themselves without re-
sorting to lethal force and could, therefore, help to limit the extent of the harm in-
flicted on civilians who are misidentified as threats. This might not prevent soldiers
from mistakenly attacking civilians, but could help to ensure that civilians usually
only sustain minor injuries rather than being incapacitated or killed. Nonlethal
weapons raise their own ethical challenges, such as the risk that soldiers may be
more inclined to deliberately attack civilians when they can do so without killing
them (Mayer 2007), yet this risk may be worth bearing if it leads to a decrease in
the number of civilians being killed or wounded in the kinds of incidents that I de-
scribed. Nonlethal weapons might be particularly effective when they are restricted
by the same ROE that govern the use of lethal force. This could diminish the pros-
pects of soldiers using nonlethal weapons to carry out intentional or negligent at-
tacks while still ensuring that civilians are exposed to a lower risk of serious injury
or death than when soldiers exercise their right of self-defense.

Appendix: Interview Questions

What was your age while you were in the military?
What was your motivation for joining?
What was your occupational specialization?
What led you to choose that specialization?
Where were you deployed? What were the time periods of your deployment?
What was your rank while you were deployed?
What unit(s) were you a part of/attached to during your deployment(s)?
How would you describe your moral values before joining the military? Could you tell me

how you tended to resolve ethical challenges you encountered before joining the military?
What reasoning processes or values did you apply?

What is your religion? Did it have a significant effect on your moral thinking before train-
ing? Did your religious values influence the decisions you made when you were deployed? If
so, how did it affect them?

What kind of ethics training did you receive prior to deployment? How useful was it?
What went well? What went poorly? Was this training conducted in conjunction with other
kinds of training (ex. field exercises) or was it done in the classroom?

Did any of the training you received conflict with your values or cause you to change the
way you made ethical decisions?

What legal instructions were you given prior to deployment?
Did any part of your training conflict with the ethical and legal instructions that you were

given? If so, how?
Could you tell me about some of the ethical challenges you encountered when you were

deployed? Which ethical challenges were the most common and why? Which ethical chal-
lenges were the most difficult and why? Could you tell me about your reasoning when you
encountered ethical challenges, especially how you were able to resolve them? How did you
feel about these challenges and your decisions afterward? (The follow up questions to clarify
the scenarios discussed and the reasoning that soldiers employed varied).

Did your training provide useful guidance for resolving the ethical challenges you en-
countered during your deployment(s)? Why or why not?

What is your perception of the way other soldiers behaved in your unit and outside of it?
What kinds of ethical challenges did they encounter and how did they tend to resolve them?

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The Unintended Consequences of War408

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KEY FINDINGS
• People living in countries affected by war believe the

law matters. Over two thirds of all respondents think
it still makes sense to impose limits on war. Almost
half of those surveyed in conflict-affected countries
still believe the Geneva Conventions prevent wars
from getting worse.

• The survey results highlight that violence against
health care is unacceptable. Over three quarters of
those sur veyed believe that attacking hospitals,
ambulances and health-care workers is wrong.

• Compared to 1999, there is a higher degree of
acceptance amongst people living in the P5 countries
and Switzerland that the death of civilians in conflict
zones is an inevitable part of war.

• Over the past two decades, there has been a shift in
public attitudes towards torture. Two thirds of all
those surveyed in 2016 say torture is wrong. But when
a s k e d s p e c i f i c a l l y a b o u t w h e t h e r a n e n e m y
combatant can be tortured, fewer people disagree
than in 1999. In addition, there is a significant increase
in the number of people who don’t know or prefer
not to answer.

• There is a disconnect between public opinion and the
policies and actions of States and armed groups.
Violations of the laws of war – including the targeting
of civilians, humanitarian workers and hospitals – are
continuing, yet the survey results clearly show that the
majority of people understand that these practices
are wrong and that civilians and health-care workers
and facilities should be protected.

CALLS TO ACTION
• All parties to a conflict, including non-State armed

groups, are reminded of their obligations under
international law to respect and ensure respect for
human life and dignity. Support for parties to an
armed conflict should depend on their compliance
with the law.

• States and armed groups need to show greater political
will to find ways to strengthen respect for international
humanitarian law, including by holding those who
violate the law to account.

• The denial of medical treatment to the wounded and
sick in armed conflict is a violation of the laws of war.
All parties to conflict should bear in mind that the way
they behave or treat people, including wounded
enemy fighters, matters and can impact the way in
which communities recover once the fighting is over.

• Tor ture is ille gal and unaccept able under any
circumstances. All par ties must respect the law.
Torture is an affront to humanity and does not make
our societies safer. Those who torture need to be
prosecuted and punished.

Between June and September 2016, over 17,000 people in 16 countries were asked about their views on a range
of issues relating to war. The survey was carried out by WIN/Gallup International and their partners in the respective
countries. Some of the exact questions as asked in the survey are reproduced in the following pages, alongside
infographics showing the breakdown of the respondents’ responses. A number of the same questions were also
asked in the last People in War survey, which was conducted almost 20 years ago in 1999, enabling some
comparisons over time to be made.

PEOPLE ON WAR

For more information: www.icrc.org/peopleonwar

SNAPSHOT

In the context of an armed conflict, what best describes your personal views?
a. Health workers should treat only wounded and sick civilians from their side of the conflict.
b. Health workers should treat wounded and sick civilians from all sides of a conflict.

What about attacking hospitals, ambulances and health-care workers
in order to weaken the enemy – is that wrong or just part of war?

HEALTH CARE IN DANGER

Health workers should treat
wounded and sick civilians from
all sides of a conflict

Wrong

Health workers should treat only
wounded and sick civilians from
their side of the conflict

Part of war Don’t know Prefer not to answer

Don’t knowPrefer not to answer

82% 79%89% 15%13% 9% 5%4% 1% 1%1% 1%

23%

5%1%

71%

Global Countries affected by armed conflict P5 countries and Switzerland

Over 8 out of 10 of all those surveyed, but especially those
in conflict-affected countries, believe this is wrong.

Overall, 7 out of 10 people believe health workers should treat wounded and sick civilians from all sides of a conflict.
Yet, at the same time, almost a quarter of those surveyed believe that health workers should only treat those from their own side.
This is slightly more the case in conflict-affected countries.*

* 25% of people living in countries affected by armed conflict
responded that health-care workers should treat only those
from their own side.

Can a captured enemy combatant
be tortured to obtain important
military information?

Wrong 66% Part of war 27%
Don’t know 5%

Prefer not to answer 2%

Yemen
Switzerland

Colombia
Afghanistan

Ukraine
France
China
Syria2

United Kingdom
Russia

Iraq
Nigeria

South Sudan
United States

Israel
Palestine

Yemen
Colombia
Switzerland
China
France
Syria2

Russia
South Sudan
Afghanistan
Palestine
Ukraine
Iraq
United Kingdom
United States
Nigeria
Israel

TORTURE

No 48% Yes 36%

What about torture –
is that wrong or part of war?1

Prefer not to answer 3%
Don’t know 13%

54% 33% 11%

72% 19% 8%

75% 24% 1%

1%

1%

3%

79% 18% 1% 1%

69% 26% 2%

2%

5%

3%

7%

4%

86% 12% 2%

21%52% 17%

20%65% 13%

18%56% 17% 9%

33%53% 13%

10%

50%25% 17% 8%

39%56% 5%

44%51% 1%

3%

3%

15%85% 1%

2%

2%

7%

70%29% 1%

99% 1%

26%50% 21%

46%30% 21%

18%72%

20%62% 12%

15%71% 13%

26%71% 1%

3%

5%

1%

4%

100%

58% 23% 13%

35% 52% 10%

44% 38% 13%

68% 30%

61% 38%

73% 23% 2%

1%

80% 14% 3% 3%

83% 1%16%

85% 14%

Two thirds of all those asked say torture is wrong. But, compared to 1999, significantly more people in 2016 believe
that an enemy combatant can be tortured for information. Meanwhile, the number of those who don’t know or
who prefer not to answer has also gone up significantly. In terms of attitudes to torture, the survey revealed a

diverse range of views across the 16 countries, as illustrated in the tables below. A significantly higher proportion
of people in conflict-affected countries agree that a captured enemy combatant can be tortured.

1 A comparison between 1999 and 2016 is not possible
because this question was not asked in the original survey.

66%

28%
6%

16%
36%
48%

1999 2016

No Yes Don’t know/Prefer not to answer

No YesWrong Part of war Don’t know Don’t knowPrefer not to answer Prefer not to answer

2 Syrians in Lebanon

BEHAVIOUR IN WAR

What about attacking enemy combatants in populated villages
or towns in order to weaken the enemy, knowing that many
civilians would be killed – is that wrong or just part of war?

What about attacking religious and historical
monuments in order to weaken the enemy –

is that wrong or just part of war?

Humanitarian workers are sometimes injured
or killed as they are delivering aid in conflict
zones – is that wrong or just part of war?

The 1949 Geneva Conventions were adopted just after World War II, nearly 70 years ago.
Warfare today is very different, does it still make sense to impose limits on war?2

17% 20% 16%

15% 10% 16%

1% 1% 1%

67% 70% 67%

Yes No Don’t know Prefer not to answer

Global
Countries

affected by
armed
conflict

P5 countries
and

Switzerland

Almost 6 out of 10 of all respondents think this practice is
wrong. This is a decrease of almost 10% since 1999. There is a
stark contrast between the views of those in conflict-affected
countries, where nearly 8 out of 10 of people believe this is
wrong, and those in the P5 countries and Switzerland, where
only half of respondents share this view.1

Overall, over two thirds of respondents think it still makes sense to impose limits on war.
The number is slightly higher in conflict-affected countries.

Wrong

Part of war

Don’t know

72% 59%

35%

4%

21%

6%

84% 73%

25%

2%

12%

3%

66% 53%

40%

6%

25%

8%

2 This question was asked only to the 67% of people who said they were aware of international
humanitarian law and the Geneva Conventions.

30%

68%

3% 7%

59%
34%

1999 2016

Wrong Part of war Don’t know/Prefer not to answer

Overall, only 59% of people believe it is wrong. In the P5
countries and Switzerland, just over half of people surveyed
believe it is wrong, while 40% think it is part of war.

Overall, the majority of respondents believe it is wrong,
particularly those in countries affected by conflict.

1 In the 2016 survey, 78% of people living in countries affected by armed conflict
and 50% of people living in the P5 countries and Switzerland responded that it was wrong.

Global

Countries affected by armed conflict
P5 countries and Switzerland


42

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INTERNATIONAL
HUMANITARIAN LAW
A COMPREHENSIVE INTRODUCTION

Nils Melzer
Coordinated by
Etienne Kuster

International Committee of the Red Cross
19, avenue de la Paix
1202 Geneva, Switzerland
T +41 22 734 60 01 F +41 22 733 20 57
E-mail: [email protected] www.icrc.org
© ICRC, November 2019

INTERNATIONAL
HUMANITARIAN LAW
A COMPREHENSIVE INTRODUCTION

ACKNOWLEDGMENTS

The ICRC expresses its sincere thanks to Dr. Nils Melzer, the author of this handbook and
the Human Rights Chair at the Geneva Academy of International Humanitarian Law and
Human Rights.

Our appreciation also goes to Etienne Kuster, adviser for relations with academic circles at
the ICRC, who coordinated the preparation, publication and translation of the handbook,
with support from ICRC staff, at headquarters in Geneva and in the field.

We are grateful to the following people for their observations and comments:
Jean-François Quéguiner, Laurent Colassis, Tristan Ferraro, Laurent Gisel, Kathleen Lawand,
Louis Maresca, Alexander Breitegger, Ramin Mahnad, Helen Obregón Gieseken,
Cristina Pellandini, Antoine Bouvier, Jean-Marie Henckaerts, Lindsey Cameron,
Gaétane Cornet, Laurence Brunet-Baldwin, Gabriel Valladares, Alexandra Cahen,
Matthieu Niederhauser, Anna Chiapello, Margherita D’Ascanio, Marica Tamanini,
Joëlle Germanier, Anne Quintin, Mariya Nikolova, Ellen Policinski, and everyone in the
Law and Policy Forum.

Thanks are also owed to Helen Durham, Director of Law and Policy at the ICRC, Vincent
Bernard, head of the Law and Policy Forum, Nicole Martins-Maag, deputy head of the Forum,
Alexandra Boivin, head of the ICRC’s delegation in Washington, and Juliane Garcia-Ravel,
research officer.

TABLE OF CONTENTS

Acronyms and abbreviated titles ………………………………………………….. 6
Foreword ……………………………………………………………………………………… 9
Introduction ………………………………………………………………………………. 12

CHAPTER 1
INTRODUCTION TO IHL ………………………………………………………….15
I. Definition and core principles of IHL ………………………………. 17
II. Sources of IHL …………………………………………………………………. 21
III. IHL in the international legal order ………………………………….. 26
IV. A brief history of IHL and some contemporary

challenges ………………………………………………………………………… 34

CHAPTER 2
SCOPE OF APPLICATION OF IHL ……………………………………………..49
I. Relevance and definition of the term “armed conflict” ……… 51
II. Distinction between international

and non-international armed conflict ………………………………. 53
III. International armed conflicts …………………………………………… 54
IV. Belligerent occupation ……………………………………………………… 60
V. Non-international armed conflicts …………………………………… 66
VI. Armed conflicts subject to foreign intervention ……………….. 73

CHAPTER 3
THE CONDUCT OF HOSTILITIES …………………………………………….77
I. Protection of the civilian population ……………………………….. 80
II. Protection of civilian objects, and of certain areas

and institutions ………………………………………………………………… 91
III. Proportionality, precautions and presumptions ……………… 100
IV. Methods of warfare ………………………………………………………… 104
V. Means of warfare ……………………………………………………………. 109
VI. Specific issues arising in non-international

armed conflicts ………………………………………………………………. 125

CHAPTER 4
THE WOUNDED AND SICK AND THE MEDICAL MISSION ……131
I. The wounded, the sick and the shipwrecked …………………… 134
II. Medical and religious personnel …………………………………….. 137
III. Medical units and transports …………………………………………. 142
IV. Hospital, safety and neutralized zones ……………………………. 149
V. The distinctive emblems …………………………………………………. 151
VI. The missing and the dead ……………………………………………….. 155
VII. Specific issues arising in non-international

armed conflicts ………………………………………………………………. 162

CHAPTER 5
DETENTION AND INTERNMENT ……………………………………………169
I. The relevance of “status” in the context of detention ………. 171
II. Internment of prisoners of war ………………………………………. 178
III. Internment and detention of civilians …………………………….. 190
IV. Specific issues arising in non-international

armed conflicts ………………………………………………………………. 208

CHAPTER 6
CIVILIANS IN ENEMY-CONTROLLED TERRITORY ………………… 219
I. General protection of civilians in the power

of the enemy …………………………………………………………………… 222
II. Enemy nationals in the territory of a belligerent party ……. 233
III. Inhabitants of occupied territories ………………………………….. 237
IV. Humanitarian assistance ………………………………………………… 250
V. Specific issues arising in non-international

armed conflicts ………………………………………………………………. 255

CHAPTER 7
IMPLEMENTATION AND ENFORCEMENT OF IHL …………………263
I. Factors influencing compliance with IHL ………………………. 265
II. Duty of belligerents “to respect and to ensure respect” …… 268
III. Ensuring respect at international level ……………………………. 274
IV. State responsibility and reparations ……………………………….. 281
V. Individual criminal responsibility

for violations of IHL ……………………………………………………… 285
VI. Judicial enforcement ………………………………………………………. 293
VII. Non-judicial enforcement ………………………………………………. 298
VIII. Specific issues arising in non-international

armed conflicts ………………………………………………………………. 305

CHAPTER 8
THE SPECIAL ROLE OF THE ICRC …………………………………………..311
I. Purpose and status of the ICRC ……………………………………… 313
II. Legal basis for ICRC action ……………………………………………. 316
III. The ICRC as the “guardian of IHL” …………………………………. 322

INDEX …………………………………………………………………………… 332

REFERENCES ………………………………………………………………… 352
ICRC learning tools and publications……………………………………….. 352
ICRC databases ………………………………………………………………………… 354
ICRC newsletters ……………………………………………………………………… 355

6 ACRONYMS AND ABBREVIATED TITLES

ACRONYMS AND ABBREVIATED TITLES
Additional Protocol I
(AP I)

Protocol additional to the Geneva Conventions of
12 August 1949, and relating to the Protection of Victims of
International Armed Conflicts (Protocol I), 8 June 1977

Additional Protocol II
(AP II)

Protocol additional to the Geneva Conventions of 12 August
1949, and relating to the Protection of Victims of Non-
International Armed Conflicts (Protocol II), 8 June 1977

Additional Protocol III
(AP III)

Protocol additional to the Geneva Conventions of 12 August
1949, and relating to the Adoption of an Additional
Distinctive Emblem (Protocol III), 8 December 2005

1977 Additional Protocols Additional Protocols I and II

Amended Protocol II to
the Convention on Certain
Conventional Weapons

Protocol II to the Convention on Certain Conventional
Weapons of 10 October 1980 (Amended Protocol II), as
amended on 3 May 1996

Anti-Personnel
Mine Ban Convention

Convention on the Prohibition of the Use, Stockpiling,
Production and Transfer of Anti-Personnel Mines and on
their Destruction, 18 September 1997

Biological Weapons Convention Convention on the Prohibition of the Development,
Production and Stockpiling of Bacteriological (Biological)
and Toxin Weapons and on their Destruction, 10 April 1972

Chemical Weapons Convention Convention on the Prohibition of the Development,
Production, Stockpiling and Use of Chemical Weapons
and on Their Destruction, 13 January 1993

CIHL Customary International Humanitarian Law as identified
in the ICRC Study

Common Article 1 Article 1 common to the Geneva Conventions
of 12 August 1949

Common Article 2 Article 2 common to the Geneva Conventions
of 12 August 1949

Common Article 3 Article 3 common to the Geneva Conventions
of 12 August 1949

Convention against Torture Convention against Torture and Other Cruel, Inhuman or
Degrading Treatment or Punishment, 10 December 1984

Convention
on Certain Conventional Weapons

Convention on Prohibitions or Restrictions on the Use of
Certain Conventional Weapons Which May be Deemed to
be Excessively Injurious or to Have Indiscriminate Effects,
10 October 1980

ECHR European Court of Human Rights

ENMOD Convention Convention on the Prohibition of Military or Any Other
Hostile Use of Environmental Modification Techniques,
10 December 1976

ACRONYMS AND ABBREVIATED TITLES 7

1949 Geneva Conventions
(GC I, II, III and IV)

Convention (I) for the Amelioration of the Condition
of the Wounded and Sick in Armed Forces in the Field,
12 August 1949 (First Geneva Convention)
Convention (II) for the Amelioration of the Condition
of Wounded, Sick and Shipwrecked Members of Armed
Forces at Sea, 12 August 1949 (Second Geneva Convention)
Convention (III) relative to the Treatment of Prisoners of War,
12 August 1949 (Third Geneva Convention)
Convention (IV) relative to the Protection of Civilian Persons
in Time of War, 12 August 1949 (Fourth Geneva Convention)

Geneva Gas Protocol Protocol for the Prohibition of the Use of Asphyxiating,
Poisonous or Other Gases, and of Bacteriological Methods
of Warfare, 17 June 1925

Hague Convention No. V Convention No. V respecting the Rights and Duties
of Neutral Powers and Persons in Case of War on Land,
18 October 1907

Hague Convention No. XIII Convention No. XIII concerning the Rights and Duties of
Neutral Powers in Naval War, 18 October 1907

Hague Convention
on Cultural Property

Convention for the Protection of Cultural Property
in the Event of Armed Conflict, 14 May 1954

1899 Hague Declaration concerning
Asphyxiating Gases

Declaration (IV,2) concerning Asphyxiating Gases,
29 July 1899

1899 Hague Declaration concerning
Expanding Bullets

Declaration (IV,3) concerning Expanding Bullets,
29 July 1899

Hague Regulations Convention No. IV respecting the Laws and Customs of War
on Land and its annex: Regulations concerning the Laws and
Customs of War on Land, 18 October 1907

IACHR Inter-American Commission on Human Rights

ICC International Criminal Court

ICJ International Court of Justice

ICJ Statute Statute of the International Court of Justice annexed to the
Charter of the United Nations, 26 June 1945

ICRC International Committee of the Red Cross

ICTY International Criminal Tribunal for the former Yugoslavia

ICTR International Criminal Tribunal for Rwanda

International Federation International Federation of Red Cross and Red Crescent
Societies

IHL International humanitarian law

IRRC International Review of the Red Cross

Movement International Red Cross and Red Crescent Movement

8 ACRONYMS AND ABBREVIATED TITLES

National Societies National Red Cross or Red Crescent Societies

NATO North Atlantic Treaty Organization

Protocol I to the Convention
on Certain Conventional Weapons

Protocol I to the Convention on Certain Conventional
Weapons of 10 October 1980, on Non-Detectable
Fragments (Protocol I), 10 October 1980

Protocol II to the Convention
on Certain Conventional Weapons

Protocol II to the Convention on Certain Conventional
Weapons of 10 October 1980, on Prohibitions
or Restrictions on the Use of Mines, Booby-Traps
and Other Devices (Protocol II), 10 October 1980

Protocol III to the Convention
on Certain Conventional Weapons

Protocol III to the Convention on Certain Conventional
Weapons of 10 October 1980, on Prohibitions
or Restrictions on the Use of Incendiary Weapons
(Protocol III), 10 October 1980

Rome Statute Rome Statute of the 17 July 1998

St Petersburg Declaration Declaration Renouncing the Use, in Time of War,
of Explosive Projectiles Under 400 Grammes Weight,
29 November / 11 December 1868

Study on customary IHL ICRC study on customary international humanitarian law

UN United Nations

UN Charter Charter of the United Nations, 26 June 1945

FOREWORD 9

FOREWORD

In the modern world, rapid developments in science and technology, and
polarized power relations, may call into question the law’s ability to adapt itself
to regulate human conduct, especially in the most dramatic circumstances of
war. However, even in this era of global change and scientific progress, the fun-
damental idea behind the rules and principles of international humanitarian
law (IHL) – that even wars have limits – is not one we seek to challenge. While
we must turn to the past to understand their importance, we must also con-
sider the future to make sure IHL rules and principles will continue to provide
the best possible protection to persons affected by armed conflicts. Combining
150 years of humanitarian action in the field and a universal mandate to work
for the implementation and development of IHL, the International Committee
of the Red Cross (ICRC) remains committed to pursuing this aim. In light
of this institutional commitment, how does the publication of this new text-
book, International Humanitarian Law: A Comprehensive Introduction, offer
a response to contemporary challenges in warfare? What is the added value of
this textbook for readers and for the ICRC?

International Humanitarian Law: A Comprehensive Introduction aims to
promote and strengthen knowledge of IHL among academics, the judiciary,
weapon-bearers, the staff of humanitarian non-governmental organizations
and international organizations, and media. This textbook presents contem-
porary issues related to IHL in an accessible and comprehensive manner, in
line with the ICRC’s reading of the law. Thanks to its particular format and
style, this book is not exclusively intended for lawyers; it also aims to meet
the needs of persons approaching IHL for the first time and interested in con-
flict-related matters. Our hope is that a better understanding of the way IHL
applies and regulates contemporary armed conflicts can help enhance protec-
tion for the lives and dignity of people affected by violence.

In today’s world, IHL is being debated and challenged on many levels. At the
factual level, the features of contemporary armed conflicts present a challenge.
These features include: an increase in asymmetric conflicts, the involvement
of one or more third States’ armed forces in local conflicts crossing national
borders, and the proliferation and fragmentation of armed parties. These
factors have appeared at times to challenge the faithful application of IHL.
Moreover, in the aftermath of 11 September 2001, both the multiplication
of terror attacks deliberately targeting civilians, and overly permissive or
restrictive interpretations of IHL to achieve policy objectives, have tended to
undermine the very object and purpose of IHL.

10 FOREWORD

A further challenge lies in the growing complexity of the interplay between
IHL and other bodies of law, such as human rights law or international crim-
inal law, which, despite all similarities, are built on different rationales. The
lack of clarity deriving from the overlap between those bodies of law, com-
bined with the resulting jurisprudential and doctrinal interpretations, has
at times been used as a pretext to lower the level of legal protection during
armed conflict. In the context of the fight against terrorism, for example, we
have seen references being made to IHL in order to lower the threshold for the
use of force, and derogations under human rights law used as an argument
to lower the protection afforded to detainees. A further consequence of these
developments has been the increased sophistication of legal interpretations
moving the law too far away from the reality on the ground.

In parallel, new technologies have entered the modern battlefield, giving rise
to new questions that urgently need practical answers. While there can be no
doubt that IHL applies to new weapons and more generally to the use of new
technologies in warfare, new means and methods pose new legal and practical
questions. Cyberspace has potentially opened up an altogether different theatre
of war that needs to be explored. The growing reliance on remote-controlled
weapon systems, such as drones, raises issues regarding, inter alia, the geo-
graphical scope of the battlefield, the applicable legal framework and account-
ability. Automated weapons, along with the above-mentioned legal concerns,
raise additional ethical questions that deserve attention.

All of these challenges and other contemporary issues are addressed in this
textbook, in an attempt to take stock of and provide answers to recent devel-
opments involving both facts and legal interpretations. In that regard, Interna-
tional Humanitarian Law: A Comprehensive Introduction has greatly benefited
from Dr Nils Melzer’s combination of field experience and legal expertise as a
former ICRC delegate and legal adviser. I would like here to express my deep
gratitude to him for having associated his rich experience with his expert
knowledge of the law to give this textbook its unique flavour, and to my ICRC
colleagues for coming along so enthusiastically on the journey.

IHL, as a branch of law, cannot remain disconnected from the realities to
which it is meant to apply, as it aims “simply” to limit the consequences of
war; and its capacity to adapt to new circumstances and challenges should
never be underestimated.

FOREWORD 11

I sincerely hope that International Humanitarian Law: A Comprehensive
Introduction can make the law and the ICRC’s legal and operational perspec-
tives more accessible to the reader, provide a useful starting point to delve in
greater depth into particular topics, and prompt concrete action to improve
the protection of victims of armed conflicts.

Dr Helen Durham
Director
International Law and Policy
International Committee of the Red Cross

12 INTRODUCTION

INTRODUCTION

From the dawn of history to the present day, the scourge of war has brought
unspeakable horror, suffering and destruction to millions of people, com-
batants and civilians alike. Entire generations have been maimed and
traumatized by violence, loss, deprivation and abuse. Families have been
torn apart and dispersed, livelihoods destroyed and the hopes of countless
men, women and children shattered. While war may have been idealized in
heroic tales of liberation, revolution and conquest, no one who has actually
experienced the reality of armed conflict can escape being deeply shaken,
tormented and destabilized – for as much as war is exclusively human, it is
also inherently inhumane. It was the appalling agony and desperation of the
victims of war that gave birth to international humanitarian law (IHL), a
body of law conceived on the battlefields of the past and present to alleviate
human suffering in situations of armed conflict. Today, the 1949 Geneva
Conventions are the most widely ratified treaties on the planet, a fact that
speaks not only to the practical relevance of IHL, but also to the universal
authority of the humanitarian principles it promotes.

This book offers a comprehensive introduction to IHL. It provides military
and humanitarian personnel, policymakers and academics with a basic but
complete understanding of the rationale and specific characteristics of IHL,
and of its place and function within the landscape of contemporary inter-
national law. In dealing with the various issues, this book does not engage
in overly technical discussions or heavily footnoted research, nor does it
purport to systematically reflect all academic views on the matter. Rather,
each of its eight chapters endeavours to cover a particular topic from the
ICRC’s perspective while remaining accessible in terms of style and sub-
stantive depth. Individual chapters can be consulted separately, by topic, or
in conjunction with others. They can be used to acquire basic knowledge, to
design courses, training tools and individual lectures, or simply for quick
reference thanks to the “In a nutshell” sections summarizing the content at
the outset of each chapter.

As a general rule, footnote references are restricted to direct legal sources
and selected key ICRC reference documents. In terms of legal sources,
systematic reference is made not only to treaty law, but also to the ICRC
study on customary IHL. Where appropriate, “To go further” sections at
the end of a passage or chapter guide the reader towards more specialized or
detailed literature, to related e-learning tools and, in particular, to relevant
documents and cases discussed in the ICRC’s reference work How Does Law
Protect in War? Moreover, thematic “Textboxes” focusing on specific law
and policy initiatives link the substantive discussion of a particular topic

INTRODUCTION 13

to the latest practical developments in that area of the law. Thanks to this
approach, the book covers the subject matter of IHL comprehensively but
remains comparatively short, straightforward and to the point.

In terms of substance, the book takes only a cursory look at the historical
development of IHL and instead focuses on outlining the current state of
the law and the legal and practical challenges arising from contemporary
situations of armed conflict. After two introductory chapters presenting the
basic characteristics of IHL, its interrelation with other legal frameworks
(Chapter 1) and its temporal, personal and geographical scope of application
(Chapter 2), four substantive chapters discuss IHL governing the conduct of
hostilities (Chapter 3) and the protection of the main categories of person
affected by armed conflicts, namely the wounded and sick and the medical
mission (Chapter 4), those deprived of their liberty (Chapter 5), and civilians
in territory controlled by the enemy (Chapter 6). The book concludes with
a chapter on the implementation and enforcement of IHL (Chapter 7) and
another on the special role of the ICRC in this respect (Chapter 8).

A special challenge for any introduction to IHL is to properly present and
compare the distinct legal regimes governing international and non-inter-
national armed conflicts. While there are fundamental legal and factual dif-
ferences that must be taken into account, there is also a growing substantive
convergence between these two bodies of law that cannot be ignored. For the
purposes of this book, it was deemed best to begin each chapter with a thorough
discussion of IHL governing international armed conflicts and to conclude
with a complementary section highlighting the specific legal and humanitarian
issues characterizing non-international armed conflicts. Numerous footnote
references to customary IHL in both parts illustrate how most of the substan-
tive rules prove to be identical in both types of conflict. Read in conjunction,
the various sections and chapters offer a broad but consolidated understanding
of IHL as it applies to the realities of modern-day armed conflicts.

Ultimately, this book aims to become a useful everyday companion for mil-
itary and humanitarian personnel, policymakers, academics and students
worldwide. It is our hope that, in achieving this ambitious goal, it will help to
enhance understanding and implementation of IHL and, thereby, contribute
to protecting the dignity of those most exposed to the dangers of conflict – for
the benefit of humanity as a whole.

Dr Nils Melzer
Human Rights Chair
Geneva Academy of International Humanitarian Law and Human Rights

Chapter 1
Introduction to IHL

IC
R

C

Next-to-last page of the Geneva Convention of 22 August 1864.

16 CHAPTER 1

Structure
I. Definition and core principles of IHL
II. Sources of IHL
III. IHL in the international legal order
IV. A brief history of and contemporary challenges for IHL

In a nutshell

➝ The purpose of IHL is to protect the victims of armed conflicts
and regulate hostilities based on a balance between military
necessity and humanity.

➝ IHL must be distinguished from legal frameworks that may
apply in parallel but which have different objects and purpos-
es, such as the UN Charter, the law of neutrality, human rights
law and international criminal law.

➝ The belligerents must meet their humanitarian obligations in
all circumstances, regardless of the enemy’s conduct and of
the nature or origin of the conflict.

➝ Although IHL is today one of the most densely codified and
ratified branches of international law, its rules can also be de-
rived from custom and general principles of law.

➝ Recent political, social, economic and technological develop-
ments pose fresh challenges to the fundamental achievements
and faithful implementation of IHL.

INTRODUCTION TO IHL 17

I. DEFINITION AND CORE PRINCIPLES OF IHL

1. Definition of IHL
IHL is a set of rules that seek to limit the humanitarian consequences of
armed conflicts. It is sometimes also referred to as the law of armed conflict
or the law of war (jus in bello). The primary purpose of IHL is to restrict the
means and methods of warfare that parties to a conflict may employ and to
ensure the protection and humane treatment of persons who are not, or no
longer, taking a direct part in the hostilities. In short, IHL comprises those
rules of international law which establish minimum standards of humanity
that must be respected in any situation of armed conflict.

➝ On the distinction between the concepts of “war”
and “armed conflict,” see Chapter 2.III.3.

2. Equality of belligerents and non-reciprocity
IHL is specifically designed to apply in situations of armed conflict. The
belligerents therefore cannot justify failure to respect IHL by invoking the
harsh nature of armed conflict; they must comply with their humanitarian
obligations in all circumstances.1 This also means that IHL is equally binding
on all parties to an armed conflict, irrespective of their motivations or of the
nature or origin of the conflict.2 A State exercising its right to self-defence
or rightfully trying to restore law and order within its territory must be
as careful to comply with IHL as an aggressor State or a non-State armed
group having resorted to force in violation of international or national law,
respectively (equality of belligerents). Moreover, the belligerents must respect
IHL even if it is violated by their adversary (non-reciprocity of humanitarian
obligations).3 Belligerent reprisals are permitted only under extremely strict
conditions and may never be directed against persons or objects entitled to
humanitarian protection.

➝ On belligerent reprisals, see Chapter 7.VII.5.

3. Balancing military necessity and humanity
IHL is based on a balance between considerations of military necessity and
of humanity. On the one hand, it recognizes that, in order to overcome an
adversary in wartime, it may be militarily necessary to cause death, injury
and destruction, and to impose more severe security measures than would

1 GC I–IV, common Art. 1; CIHL, Rule 139.
2 AP I, Preamble, para. 5.
3 GC I–IV, common Art. 1; CIHL, Rule 140.

18 CHAPTER 1

be permissible in peacetime. On the other hand, IHL also makes clear that
military necessity does not give the belligerents carte blanche to wage unre-
stricted war.4 Rather, considerations of humanity impose certain limits on
the means and methods of warfare, and require that those who have fallen
into enemy hands be treated humanely at all times.5 The balance between
military necessity and humanity finds more specific expression in a number
of core principles briefly outlined below.6

4. Distinction
The cornerstone of IHL is the principle of distinction. It is based on the rec-
ognition that “the only legitimate object which States should endeavour to
accomplish during war is to weaken the military forces of the enemy,”7 whereas
“[t]he civilian population and individual civilians shall enjoy general protec-
tion against dangers arising from military operations.”8 Therefore, the parties
to an armed conflict must “at all times distinguish between the civilian pop-
ulation and combatants and between civilian objects and military objectives
and accordingly shall direct their operations only against military objectives.”9

➝ On the principle of distinction, see Chapter 3.

5. Precaution
The principle of distinction also entails a duty to avoid or, in any event,
minimize the infliction of incidental death, injury and destruction on
persons and objects protected against direct attack. Accordingly, IHL
requires that, “[i]n the conduct of military operations, constant care shall
be taken to spare the civilian population, civilians and civilian objects.”10
This applies both to the attacking party, which must do everything feasible
to avoid inflicting incidental harm as a result of its operations (precautions

4 AP I, Art. 35(1); Hague Regulations, Art. 22. For further information, see Françoise
Hampson, “Military necessity,” in “Crimes of War,” webpage, 2011. Available at: https://
web.archive.org/web/20130809183729/http://w w w.crimesof war.org/a-z-guide/mili-
tary-necessity/

5 See Chapter 1, II.3, which discusses “elementary considerations of humanity” as a
general principle of law. For further information, see also Robin Coupland, “Human-
ity: What is it and how does it influence international law?,” IRRC, Vol. 83, No. 844,
December 2001, pp. 969–990.

6 See also Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional
Protocols of 8 June 1977 to the Geneva Conventions of 12 August 1949, ICRC/Martinus
Nijhoff, Geneva/Dordrecht, 1987, paras 1389–1397.

7 St. Petersburg Declaration, Preamble.
8 AP I, Art. 51(1); CIHL, Rule 1.
9 AP I, Art. 48; CIHL, Rules 1 and 7.
10 AP I, Art. 57(1); CIHL, Rule 15.

INTRODUCTION TO IHL 19

in attack),11 and to the party being attacked, which, to the maximum
extent feasible, must take all necessary measures to protect the civilian
population under its control from the effects of attacks carried out by the
enemy (precautions against the effects of attack).12

➝ On the principle of precaution, see Chapter 3.III.2–4.

6. Proportionality
Where the infliction of incidental harm on civilians or civilian objects
cannot be avoided, it is subject to the principle of proportionality. Accord-
ingly, those who plan or decide on an attack must refrain from launching, or
must suspend, “any attack which may be expected to cause incidental loss of
civilian life, injury to civilians, damage to civilian objects, or a combination
thereof, which would be excessive in relation to the concrete and direct
military advantage anticipated.”13

➝ On the principle of proportionality, see Chapter 3.III.1.

7. Unnecessary suffering
IHL not only protects civilians from the effects of hostilities, it also prohib-
its or restricts means and methods of warfare that are considered to inflict
unnecessary suffering or superfluous injury on combatants. As early as 1868,
the St Petersburg Declaration recognized:

“That the only legitimate object […] during war is to weaken the
military forces of the enemy;

That for this purpose it is sufficient to disable the greatest possible
number of men;

That this object would be exceeded by the employment of arms which
uselessly aggravate the sufferings of disabled men, or render their
death inevitable;

That the employment of such arms would, therefore, be contrary to
the laws of humanity.”

11 Ibid.
12 AP I, Art. 58; CIHL, Rule 22.
13 AP I, Arts 51(5)(b) and 57(2)(a)(iii) and (b); CIHL, Rules 14, 18 and 19.

20 CHAPTER 1

Accordingly, in the conduct of hostilities, it is prohibited “to employ
weapons, projectiles and material and methods of warfare of a nature to
cause superfluous injury or unnecessary suffering.”14

➝ On the prohibition of unnecessary suffering, see Chapter 3.V.1.

8. Humane treatment
One of the most fundamental rules of IHL is that all persons who have fallen
into the power of the enemy are entitled to humane treatment regardless
of their status and previous function or activities. Accordingly, common
Article 3, which is considered to reflect a customary “minimum yardstick”
for protection that is binding in any armed conflict, states: “Persons taking
no active part in the hostilities, including members of armed forces who
have laid down their arms and those placed hors de combat by sickness,
wounds, detention, or any other cause, shall in all circumstances be treated
humanely, without any adverse distinction founded on race, colour, religion
or faith, sex, birth or wealth, or any other similar criteria.”15 Although IHL
expressly permits parties to the conflict to “take such measures of control
and security in regard to [persons under their control] as may be necessary
as a result of the war,”16 the entitlement to humane treatment is absolute and
applies not only to persons deprived of their liberty but also, more generally,
to the inhabitants of territories under enemy control.

➝ On the duty of humane treatment, see Chapters 4–6.17

14 AP I, Art. 35(2); Hague Regulations, 23(e); CIHL, Rule 70.
15 GC I–IV, common Art. 3(1); CIHL, Rules 87 and 88.
16 GC IV, Art. 27(4).
17 All ICRC films, databases, documents and reports, readings and case studies from M.

Sassòli, A. Bouvier and A. Quintin, How Does Law Protect in War?, ICRC, Geneva, 2011,
and articles from the IRRC, are available on the ICRC website: www.icrc.org

All hyperlinks mentioned in this textbook were last visited on 28 January 2016.

To go further (Definition and core principles of IHL)17

• Rules of war (in a nutshell), film, ICRC, 2014. Available at:

• ICRC e-learning module, What is international humanitarian law? Available at:
http://www.icrcproject.org/elearning/en/ihl/M1/index.html

• Jean Pictet, Development and Principles of International Humanitarian Law,
Nijhoff Law Specials No. 2, Martinus Nijhoff Publishers, Dordrecht, 1985,
586 pp.

INTRODUCTION TO IHL 21

II. SOURCES OF IHL

Just like any other body of international law, IHL can be found in three
distinct sources: treaties, custom, and the general principles of law.18 In
addition, case-law, doctrine and, in practice, “soft law” play an increasingly
important role in the interpretation of individual rules of IHL.

1. Treaty law
Today, IHL is one of the most densely codified branches of international
law. In practice, therefore, the most relevant sources of IHL are treaties
applicable to the armed conflict in question. For example, in situations
of international armed conflict, the most important sources of applicable
IHL would be the four 1949 Geneva Conventions, their Additional Proto-
col I, and weapons treaties, such as the 1980 Convention on Certain Conven-
tional Weapons or the 2008 Convention on Cluster Munitions. Treaty IHL
applicable in non-international armed conflicts is significantly less develo-
ped, the most important sources being common Article 3 and, in certain cir-
cumstances, Additional Protocol II.19 Given that most contemporary armed
conflicts are non-international, there is a growing perception that certain
areas of treaty IHL governing these situations may require further strength-
ening, development or clarification.

➝ See also Textbox 9: Swiss/ICRC initiative on strengthening the
implementation of IHL (Chapter 7.III.4.b.).

The advantage of treaty IHL is that it is relatively unambiguous. The scope of
applicability of the treaty is defined in the text itself, the respective rights and
obligations are spelled out in carefully negotiated provisions, which may be
supplemented with express reservations or understandings, and the States
Parties are clearly identified through the act of ratification or accession. This
does not preclude questions of interpretation from arising later, particularly
as the political and military environment changes over time, but it provides
a reliable basis for determining the rights and obligations of belligerents and
for engaging in dialogue with them on their compliance with IHL.

2. Custom
While treaty law is the most tangible source of IHL, its rules and principles
are often rooted in custom, namely general State practice (usus) accepted

18 ICJ Statute, Art. 38(1).
19 Other applicable treaties include the 1998 Rome Statute, the 1954 Hague Convention on Cul-

tural Property and its Second Protocol of 1999, and a number of specific weapons treaties,
namely the Convention on Certain Conventional Weapons of 10 October 1980 and its
Article 1, as amended on 21 December 2001, the 1997 Anti-Personnel Mine Ban Convention,
the 1993 Chemical Weapons Convention, and the 2008 Convention on Cluster Munitions.

22 CHAPTER 1

as law (opinio juris).20 Such practice has consolidated into customary law,
which exists alongside treaty law and independently of it. Customary law
does not necessarily predate treaty law; it may also develop after the conclu-
sion of a treaty or crystallize at the moment of its conclusion. For example,
a belligerent State may have ratified neither the 1980 Convention on Certain
Conventional Weapons nor Additional Protocol I, which prohibits the use
of “weapons, projectiles and material and methods of warfare of a nature to
cause superfluous injury or unnecessary suffering.” There is, however, a uni-
versally recognized customary prohibition against such means and methods
of warfare.21 Thus, that State would be prohibited from using such munitions
under customary IHL.

The advantage of customary IHL is that it is a dynamic body of law con-
stantly evolving in tandem with State practice and legal opinion. Customary
law can therefore adapt much more quickly to new challenges and develop-
ments than treaty law, any change or development of which requires inter-
national negotiations followed by the formal adoption and ratification of an
agreed text. Also, while treaties apply only to those States that have ratified
them, customary IHL is binding on all parties to an armed conflict irrespec-
tive of their treaty obligations. Customary law is relevant not only where an
existing IHL treaty has not been ratified by a State party to an international
armed conflict; it is particularly relevant in situations of non-international
armed conflict, because these are regulated by far fewer treaty rules than
international armed conflicts, as explained above. The disadvantage of
customary law is that it is not based on a written agreement and, conse-
quently, that it is not easy to determine to what extent a particular rule has
attained customary status. In reality, State practice tends to be examined
and customs identified by national and international courts and tribunals
tasked with the interpretation and adjudication of international law. The
ICRC’s extensive study on customary IHL is also a widely recognized source
of reference in this respect (see Textbox 1, Chapter 1.II.2 below).

The fact that customary law is not written does not mean that it is less
binding than treaty law. The difference lies in the nature of the source, not in
the binding force of the resulting obligations. For example, the Inter national
Military Tribunal at Nuremberg, in the trials following World War II, held
not only that the 1907 Hague Regulations themselves had attained custom-
ary nature and were binding on all States irrespective of ratification and
reciprocity, but also that individuals could be held criminally responsi-
ble and punished for violating their provisions as a matter of customary

20 ICJ Statute, Art. 38(1)(b).
21 CIHL, Rule 70.

INTRODUCTION TO IHL 23

international law. Similarly, the ICTY has based many of its judgments on
rules and principles of IHL not spelled out in the treaty law applicable to
the case at hand but considered to be binding as a matter of customary law.
22 23

22 26th International Conference of the Red Cross and Red Crescent, Geneva, 3–7 Decem-
ber 1995, Resolution 1, “International humanitarian law: From law to action; Report on
the follow-up to the International Conference for the Protection of War Victims,” IRRC,
No. 311, 1996, p. 58.

23 J.-M. Henckaerts and L. Doswald-Beck, Customary International Humanitarian Law,
Vol. I: Rules and Vol. II: Practice, Cambridge University Press, Cambridge, 2005.

Textbox 1: The ICRC study on customary international
humanitarian law

In December 1995, the 26th International Conference of the Red Cross and Red Crescent
formally mandated the ICRC to prepare a report on customary rules of IHL applic-
able in international and non-international armed conflicts.22 In 2005, after extensive
research and consultations with experts throughout the world, the ICRC published its
report, now referred to as “the study on customary IHL”.23 In essence, the study provides
a snapshot of what the ICRC considered to be customary IHL at the time of publica-
tion. While customary IHL, as a source of international law like treaty IHL, is binding
on States and other parties to armed conflict, the ICRC’s study as such is not binding.
However, it carries the authority of an organization specifically mandated by the inter-
national community “to work for the understanding and dissemination of knowledge of
international humanitarian law”.

The study does not attempt to examine each rule of treaty IHL as to its customary nature;
rather, it aims to establish whether and, if so, to what extent certain issues of practical
relevance are regulated in customary IHL. Volume I of the study lists 161 rules that the
ICRC considers to be binding as a matter of customary IHL and explains the rationale
behind that assessment; Volume II catalogues the practice on which the conclusions
in Volume I are based. The study found that most (135 rules) of the customary IHL
rules identified are equally applicable in both international armed conflict (IAC) and
non-international armed conflict (NIAC). Since there is considerably less treaty IHL
governing NIAC than there is for IAC, this was an important result of the study. Finally,
the study discusses areas where IHL is not clear and points to issues that require further
clarification. Overall, as important as its findings are, the ICRC’s study on customary
IHL should not be seen as the end of a process but as a beginning. It reveals what has
been accomplished but also what remains unclear and what remains to be done.

• For the rules identified as being customary by the ICRC, the practice
underlying those rules, and regular updates of this practice, see the
online ICRC customary IHL database, available at:
https://ihl-databases.icrc.org/customary-ihl/eng/docs/home

24 CHAPTER 1

3. General principles of law
The third source of international law, next to treaties and custom, consists
of “the general principles of law recognized by civilized nations.”24 There is
no agreed definition or list of general principles of law. In essence, the term
refers to legal principles that are recognized in all developed national legal
systems, such as the duty to act in good faith, the right of self-preservation
and the non-retroactivity of criminal law. General principles of law are dif-
ficult to identify with sufficient accuracy and therefore do not play a prom-
inent role in the implementation of IHL. Once authoritatively identified,
however, general principles of law can be of decisive importance because
they give rise to independent international obligations.

Most notably, the ICJ has on several occasions derived IHL obligations
directly from a general principle of law, namely “elementary considerations
of humanity,” which it held to be “even more exacting in peace than in war.”
Based on this principle, the ICJ has argued that the IHL obligation of States
to give notice of maritime minefields in wartime applies in peacetime as
well,25 and that the humanitarian principles expressed in common Article 3
are binding in any armed conflict, irrespective of its legal classification and
of the treaty obligations of the parties to the conflict.26 Moreover, the ICTY
has argued that “elementary considerations of humanity” are “illustrative
of a general principle of international law” and “should be fully used when
interpreting and applying loose international rules” of treaty law.27

In this context, it would be remiss not to refer to the Martens Clause, which
provides that, in cases not regulated by treaty law, “populations and bellig-
erents remain under the protection and empire of the principles of inter-
national law, as they result from the usages established between civilized
nations, from the laws of humanity and the requirements of the public con-
science.”28 The Martens Clause was first adopted at the First Hague Peace
Conference of 1899 and has since been reformulated and incorporated in
numerous international instruments.29 While the extent to which specific

24 ICJ Statute, Art. 38.
25 ICJ, Corfu Channel Case (United Kingdom v. Albania), Judgment (Merits), 9 April 1949,

ICJ Reports 1949, p. 22.
26 ICJ, Case concerning Military and Paramilitary Activities in and against Nicaragua (Nicara-

gua v. United States of America) (Nicaragua case), Judgment (Merits), 27 June 1986, para. 218.
27 ICTY, The Prosecutor v. Kupreskic et al., Case No. IT-95-16-T-14, Judgment (Trial Cham-

ber), January 2000, para. 524.
28 Convention (II) with Respect to the Laws and Customs of War on Land and its annex:

Regulations concerning the Laws and Customs of War on Land, 29 July 1899 (Hague
Convention No. II), Preamble.

29 Hague Regulations, Preamble; GC I, Art. 63; GC II, Art. 62; GC III, Art. 142; GC IV, Art.
158; AP I, Art. 1(2); AP II, Preamble; Convention on Certain Conventional Weapons,
Preamble.

INTRODUCTION TO IHL 25

legal obligations can be derived directly from the Martens Clause remains
a matter of controversy, the Clause certainly disproves assumptions sug-
gesting that anything not expressly prohibited by IHL must necessarily be
permitted.

4. The role of “soft law,” case-law and doctrine
While treaties, custom and general principles of law are the only sources of
international law, the rules and principles derived from these sources often
require more detailed interpretation before they can be applied in practice.30
For example, while the law makes clear that IHL applies only in situations
of “armed conflict,” the precise meaning of that term must be determined
through legal interpretation. Similarly, IHL provides that civilians are enti-
tled to protection from direct attack “unless and for such time as they take a
direct part in hostilities.” Again, a decision as to whether a particular civil-
ian has lost his or her protection depends on the meaning of the term “direct
participation in hostilities.”

Of course, guidance on the interpretation of IHL can be given by the States
themselves as the legislators of international law. This may take the form
of unilateral reservations or declarations, or resolutions of multilateral
organizations, but also of support for non-binding instruments. Examples
of such “soft law” instruments relevant for the interpretation of IHL include
the United Nations Guiding Principles on Internal Displacement (1998)
and the United Nations Basic Principles and Guidelines on the Right to a
Remedy and Reparation for Victims of Gross Violations of International
Human Rights Law and Serious Violations of International Humanitarian
Law (2005).31

Absent such State-driven guidance, the task of interpreting IHL falls, first
and foremost, to international courts and tribunals mandated to adjudicate
cases governed by IHL, such as the ad hoc international criminal tribunals
established for specific conflicts, the ICC and, of course, the ICJ. In addition,
the teachings of the most highly qualified publicists are also recognized as
a subsidiary means of determining the law.32 Also, in view of the special
mandate of the ICRC, its Commentaries on the 1949 Geneva Conventions

30 For the general rule for treaty interpretation, see Vienna Convention on the Law of Trea-
ties, 23 May 1969, (Vienna Convention on the Law of Treaties), Art. 31.

31 For an overview of the ICRC’s contribution to those instruments, see J.-P. Lavoyer,
“Comments on the guiding Principles on Internal Displacement,” IRRC, No. 324,
September 1998; J. Kellenberger, “Relations of the ICRC with the humanitarian system
of the UN,” Statement, San Remo, 8 September 2005.

32 ICJ Statute, Art. 38.

26 CHAPTER 1

and their Additional Protocols are regarded as a particularly authoritative
interpretation of these treaties.

➝ On the special role of the ICRC with regard to IHL, see Chapter 8.

33

III. IHL IN THE INTERNATIONAL LEGAL ORDER

IHL is that body of international law which governs situations of armed con-
flict. As such, it must be distinguished from other bodies of international
law, particularly those that may apply at the same time as IHL, but which
have a different object and purpose. The most important frameworks to be
discussed in this context are: (1) the UN Charter and the prohibition against
the use of inter-State force; (2) international human rights law; (3) interna-
tional criminal law; and (4) the law of neutrality. It should be noted that,
depending on the situation, other branches of international law, while not
specifically discussed here, may be relevant as well. They include the law of

33 ICRC documents available at: www.icrc.org

To go further (Sources of IHL)33

• ICRC e-learning module, What are the sources of international humanitarian
law? Available at: http://www.icrcproject.org/elearning/en/ihl/M3/index.html

• For a chronological list of all IHL treaties and their States Parties, see the on-
line ICRC treaty database, available at: https://www.icrc.org/ihl

• For a complete list of rules identified by the ICRC as being part of customary
IHL, see the online customary IHL database, available at:
https://www.icrc.org/customary-ihl/eng/docs/home

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 4: Sources of contemporary inter-
national humanitarian law, pp. 149–162.

• Jean-Marie Henckaerts, “Study on customary international humanitarian law:
A contribution to the understanding and respect for the rule of law in armed
conflict,” IRRC, Vol. 87, No. 857, March 2005, pp. 175–212.

How Does Law Protect in War?

• Case No. 43, ICRC, Customary International Humanitarian Law

• Case No. 211, ICTY, The Prosecutor v. Tadić, Doc. A, paras 94–134

• Case No. 215, ICTY, The Prosecutor v. Kupreškić et al., paras 525–540

INTRODUCTION TO IHL 27

the sea, the law governing diplomatic and consular relations, environmental
law and refugee law, to name but a few.

1. IHL and the prohibition against the use of inter-State force
IHL governs situations of armed conflict once they arise. It does not regulate
whether the use of force by one State against another is lawful in the first place.
This function falls to the law governing the use of inter-State force, also referred
to as jus ad bellum (or, perhaps more accurately, jus contra bellum), the basic
premises of which are set out in the UN Charter and corresponding customary
law. Article 2(4) of the UN Charter provides that States “shall refrain in their
international relations from the threat or use of force against the territorial
integrity or political independence of any state, or in any other manner incon-
sistent with the Purposes of the United Nations.” In essence, this amounts
to a general prohibition on the use of force, or on the threat thereof, in
international relations between States. Although irrelevant under IHL,
the question of whether the prohibition against the use of inter-State force
has been violated is an important part of the legal and political context of
any armed conflict involving cross-border operations on the territory of
another State.

The UN Charter stipulates only two exceptions to the prohibition against
the use of inter-State force. First, Article 51 states that the prohibition does
not impair a State’s “inherent right of individual or collective self-defence
if an armed attack occurs.” In essence, this means that a State may lawfully
resort to inter-State force in self-defence to the extent that this is necessary
and proportionate to repel an armed attack. Second, Article 42 states that
the Security Council may use, or authorize the use of, inter-State force “as
may be necessary to maintain or restore international peace and security.”
It must be emphasized, however, that both exceptions derogate only from
the Charter prohibition on the use of inter-State force, but cannot termi-
nate, diminish or otherwise modify the absolute obligation of belligerents to
comply with IHL (equality of belligerents).34

2. IHL and human rights law
While IHL regulates the conduct of hostilities and the protection of persons
in situations of armed conflict, international human rights law protects the
individual from abusive or arbitrary exercise of power by State authorities.
While there is considerable overlap between these bodies of law, there are
also significant differences.

34 On the equality of belligerents, see Section I.2.

28 CHAPTER 1

Scope of application: While the personal, material and territorial applica-
bility of IHL essentially depends on the existence of a nexus with an armed
conflict, the applicability of human rights protections depends on whether
the individual concerned is within the “jurisdiction” of the State involved.
For example, during an international armed conflict, IHL applies not only in
the territories of the belligerent States, but essentially wherever their armed
forces meet, including the territory of third States, international airspace,
the high seas, and even cyberspace. According to the prevailing interpre-
tation, human rights law applies only where individuals find themselves
within territory controlled by a State, including occupied territories (ter-
ritorial jurisdiction), or where a State exercises effective control, most com-
monly physical custody, over individuals outside its territorial jurisdiction
(personal jurisdiction).35 More extensive interpretations of jurisdiction have
been put forward that would extend human rights protections to any indi-
vidual adversely affected by a State, but they remain controversial.

Scopes of protection and obligation: IHL is sometimes inaccurately
described as the “human rights law of armed conflicts.” Contrary to human
rights law, IHL generally does not provide persons with rights they could
enforce through individual complaints procedures. Also, human rights law
focuses specifically on human beings, whereas IHL also directly protects,
for example, livestock, civilian objects, cultural property, the environment
and the political order of occupied territories. Finally, human rights law is
binding only on States, whereas IHL is binding on all parties to an armed
conflict, including non-State armed groups.

Derogability: Most notably, IHL applies only in armed conflicts and is specif-
ically designed for such situations. Therefore, unless expressly foreseen in the
relevant treaty provisions, the rules and principles of IHL cannot be derogated
from. For example, it would not be permissible to disregard the prohibition
on attacks against the civilian population based on arguments such as military
necessity, self-defence or distress. Human rights law, on the other hand, applies
irrespective of whether there is an armed conflict. In times of public emergency,
however, human rights law allows for derogations from protected rights to the
extent actually required by the exigencies of the situation. For example, during
an armed conflict or a natural disaster, a government may lawfully restrict
freedom of movement in order to protect the population in the affected areas

35 ICJ, Legal Consequences of the Construction of a Wall in the Occupied Palestinian Territory
(Advisory Opinion) (The Wall Opinion), 9 July 2004, ICJ Reports 2004, para. 109. See also
ECHR, Loizidou v. Turkey (Preliminary Objections), App. No. 15318/89, 23 February 1995,
Series A no. 310, paras 62-63; ECHR, Öcalan v. Turkey, App. No. 46221/99, Judgment of
12 March 2003 (Chamber), para. 93 and ECHR, Öcalan v. Turkey, App. No. 46221/99, Judg-
ment of 12 May 2005 (Grand Chamber), para. 91.

INTRODUCTION TO IHL 29

and to facilitate governmental action aimed at restoring public security and law
and order. Only a number of core human rights, such as the right to life, the pro-
hibition of torture and inhuman or degrading treatment or punishment, and the
prohibition of slavery remain non-derogable even in times of public emergency.

Interrelation: Despite these fundamental differences, IHL and human rights
law have rightly been said to share a “common nucleus of non-derogable rights
and a common purpose of protecting human life and dignity.”36 As a general
rule, where IHL and human rights law apply simultaneously to the same
situation, their respective provisions do not contradict, rather they mutually
reinforce each other. Thus, both IHL and human rights law prohibit torture
or inhuman and degrading treatment and afford fair-trial guarantees to
anyone accused of a crime.

In some areas, the interrelation between IHL and human rights law may be less
straightforward. For example, with respect to persons who do not, or no longer,
directly participate in hostilities, IHL prohibits violence to life and person, in
particular murder in all circumstances. For obvious reasons, however, it does
not provide such protection to combatants and civilians directly participat-
ing in hostilities. Universal human rights law, on the other hand, protects all
persons against “arbitrary” deprivation of life, thus suggesting that the same
standards apply to everyone, irrespective of their status under IHL. In such
cases, the respective provisions are generally reconciled through the lex specia-
lis principle, which states that the law more specifically crafted to address the
situation at hand (lex specialis) overrides a competing, more general law (lex
generalis). Accordingly, the ICJ has held that, while the human rights prohibi-
tion on arbitrary deprivation of life also applies in hostilities, the test of what
constitutes arbitrary deprivation of life in the context of hostilities is deter-
mined by IHL, which is the lex specialis specifically designed to regulate such
situations.37 Similarly, the question of whether the internment of a civilian or
a prisoner of war by a State party to an international armed conflict amounts
to arbitrary detention prohibited under human rights law must be determined
based on the Third and Fourth Geneva Conventions, which constitute the lex
specialis specifically designed to regulate internment in such situations.

In other areas, the question of the interrelation between IHL and human
rights may be even more complicated. For example, while treaty IHL con-
firms the existence of security internment in non-international armed

36 IACHR, Juan Carlos Abella v. Argentina (La Tablada case), Case No. 11.137, Report No.
55/97, 18 November 1997, para. 158. See also ICTY, Prosecutor v. Anto Furundzija (Trial
Judgment), IT-95-17/1-T, 10 December 1998, para. 183.

37 ICJ, Legality of the Threat or Use of Nuclear Weapons (Advisory Opinion), 8 July 1996, ICJ
Reports 1996, para. 25.

30 CHAPTER 1

conflicts as well, it does not contain any procedural guarantees for internees,
thus raising the question as to how the human rights prohibition of arbitrary
detention is to be interpreted in such situations.

Finally, even though, in armed conflicts, IHL and human rights law gener-
ally apply in parallel, some issues may also be exclusively governed by one or
the other body of law. For example, the fair-trial guarantees of a person who
has committed a common bank robbery in an area affected by an armed
conflict, but for reasons unrelated to that conflict, will not be governed by
IHL but exclusively by human rights law and national criminal procedures.
On the other hand, the aerial bombardment of an area outside the territorial
control of the attacking State, or any belligerent acts committed by organ-
ized armed groups not belonging to a State, will not be governed by human
rights law but exclusively by IHL.

Textbox 2: ICRC expert meeting on IHL
and the use of force in armed conflicts

Scope and practical relevance of the problem
In a situation of armed conflict, the use of force by armed forces and law enforcement offi-
cials is governed by two different paradigms: the conduct of hostilities paradigm, derived
from IHL, and the law enforcement paradigm, mainly derived from human rights law.
Increasingly, in many contemporary armed conflicts – particularly in occupied territories
and in non-international armed conflicts – armed forces are expected to conduct not only
combat operations against the adversary but also law enforcement operations in order
to maintain or restore public security and law and order. The two paradigms may also
coexist in conflicts involving foreign intervention with the agreement of the territorial
State (i.e. the State on whose territory the conflict is taking place), or under the mandate
of the international community. In practice, it may be difficult to determine which sit-
uations are governed by which paradigm. For example, a State engaged in a non-inter-
national armed conflict will regard armed opposition fighters not only as legitimate
military targets under IHL but also as criminals under domestic law. Thus, the armed
forces of that State using force against those fighters may be considered as simul-
taneously conducting hostilities and maintaining law and order. Difficult situations
may also arise when civil unrest coincides with combat operations, or when persons
engaged in combat intermingle with civilian rioters or demonstrators. The choice of
the applicable paradigm may have significant legal and humanitarian consequences,
given that the conduct of hostilities paradigm is generally more permissive than the
law enforcement paradigm, most notably in terms of the deliberate use of lethal force
and of incidental harm to the civilian population.

INTRODUCTION TO IHL 31

3. IHL and international criminal law
In regulating the conduct of hostilities and protecting the victims of armed
conflict, IHL imposes certain duties on those involved in the conflict and
prohibits them from engaging in certain acts. In order to enforce these
duties and prohibitions, IHL obliges all parties to a conflict to take the meas-
ures necessary to prevent and repress violations of IHL, including criminal
prosecution and sanctions. The 1949 Geneva Conventions and Additional
Protocol  I also identify a series of particularly serious violations, referred
to as “grave breaches” and, in Additional Protocol I, as “war crimes,” which
give rise to universal jurisdiction. This means that any State, irrespective of
its involvement in a conflict or its relation to the suspects or victims in an
alleged crime, has an international obligation to conduct an investigation
and to either prosecute the suspects or to extradite them to another State
willing to prosecute them.38

In short, IHL obliges States to prevent and prosecute serious violations of
IHL, but it does not attach sanctions to these violations, does not describe
them in sufficient detail to make them prosecutable in court, and does not
establish any procedures for the exercise of jurisdiction over individual
suspects. This is the role of criminal law, whether on the domestic or the
international level. In other words, criminal law, in contrast to IHL, does

38 See also Chapter 7.V.

ICRC expert meeting and report

In view of the practical importance of clarifying these questions, the ICRC convened
an expert meeting in Geneva on 26 and 27 January 2012 with a view to identifying
the dividing line between the conduct of hostilities and law enforcement paradigms in
situations of armed conflict. The meeting brought together 22 prominent legal person-
nel and academics from 16 different countries under the Chatham House Rule, each
participating in his or her personal capacity. In November 2013, the ICRC published a
report on the issues discussed at the meeting with a few of its concluding observations.

• For further details, see Gloria Gaggioli (ed.), The Use of Force in Armed Con-
flicts: Interplay between the Conduct of Hostilities and Law Enforcement Para-
digms – Expert Meeting, Report, ICRC, Geneva, November 2013, 92 pp.

• See also Use of Force in Armed Conflicts: Interplay between the Conduct of
Hostilities and Law Enforcement Paradigms, ICRC webinar recording, Nov-
ember 2014. Available at: https://www.icrc.org/eng/resources/documents/
event/2014/webinar-use-of-force.htm

32 CHAPTER 1

not define the duties of the belligerents, but creates the legal basis needed to
prosecute individuals for serious violations of these duties.

Traditionally, the enforcement of IHL at the level of the individual was
largely ensured by the belligerent States themselves, through disciplinary
sanctions and criminal prosecution under their national laws and regu-
lations. It was at the end of World War II that serious violations of IHL
were first considered to give rise to individual criminal responsibility as
a matter of international law and were prosecuted as war crimes by the
International Military Tribunals in Nuremberg and Tokyo. These trials
remained tied to specific contexts, however, and prosecuted only crimes
committed by the defeated parties to the conflict. When the UN Security
Council established the ICTY and the ICTR in 1993 and 1994, respectively,
their jurisdiction was still confined to particular contexts. It was only with
the adoption of the Rome Statute, in 1998, that the international com-
munity finally created a permanent International Criminal Court with
jurisdiction over international crimes committed by nationals, or on the
territory, of a State party to the Statute, or referred to it by the UN Secu-
rity Council. Today, the Rome Statute has been ratified by more than 120
States; however, a number of militarily important States have yet to do so.

➝ On the enforcement of IHL through international criminal law,
see Chapter 7.V.–VI.

4. IHL and the law of neutrality
The law of neutrality is traditionally regarded as part of the law of war
(jus in bello) alongside IHL. It is rooted in customary law and codified
in the Hague Conventions, Nos V and XIII, of 1907. In essence, the law of
neutrality has three aims: (a) to protect neutral States (i.e. all States that are
not party to an international armed conflict) from belligerent action; (b)
to ensure neutral States do not militarily support belligerent States; and (c)
to maintain normal relations between neutral and belligerent States. Most
notably, the law of neutrality obliges neutral States to prevent their terri-
tory, including airspace and waters subject to their territorial sovereignty,
from being used by belligerent States. If combatants belonging to either
party cross into neutral territory, they must be interned by the neutral State;
the Third Geneva Convention also requires that they be treated as pris-
oners of war.39 The belligerents, in turn, must respect the inviolability of
neutral territory and may not move troops or convoys of ammunition or
supplies across the territory of a neutral State.

39 Hague Regulations, Art. 11; GC III, Art. 4(B)(2).

INTRODUCTION TO IHL 33

Strictly speaking, the law of neutrality applies only in international armed
conflicts. Over the course of time, however, its rationale has gradually found
its way into the practice of non-international armed conflicts as well. For
example, with regard to the standards of internment to be applied by neutral
States to combatants on their territory, the ICRC has formally stated that
Hague Convention No. V “can also be applied by analogy in situations of
non-international conflict, in which fighters either from the government
side or from armed opposition groups have fled into a neutral State.”40

By the same token, in political reality, the consequences of non-State armed
groups using the territory of a neutral State to conduct attacks against a bel-
ligerent State are similar to those foreseen in the traditional law of neutrality
and include, most notably, the loss of the neutral territory’s inviolability. For
example, when attacks were launched by al-Qaeda against the United States
from within Afghanistan (2001), by Hezbollah against Israel (2006) from
within Lebanon, and by the FARC against Colombia from within Ecuador
(2008), all the States that had been attacked conducted cross-border incur-
sions against the groups in question, because their neutral host States were
unable or unwilling to protect the attacked States’ interests within their ter-
ritory. The international lawfulness of such cross-border incursions remains
widely controversial, particularly in view of the UN Charter’s prohibition on
the use of inter-State force. However, the basic obligation of States to prevent
non-State armed groups within their territory from engaging in hostile
activities against other States is generally recognized.41
42

40 ICRC, The Civilian Character of Asylum: Separating Armed Elements from Refugees,
Official Statement to the UNHCR Global Consultations on International Protection,
8–9 March 2001.

41 See, for example, the Annex to UN General Assembly Resolution 36/103 of 9 December
1981, Declaration on the Inadmissibility of Intervention and Interference in the Internal
Affairs of States, paras 2(II)(b) and 2(II)(f ).

42 ICRC documents available at: www.icrc.org

To go further (IHL in the international legal order)42

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 2: International humanitarian law
as a branch of public international law, pp. 101–138.

• Louise Doswald-Beck and Sylvain Vité, “International Humanitarian Law
and Human Rights Law,” IRRC, No. 293, March–April 1993, pp. 94–119.

34 CHAPTER 1

IV. A BRIEF HISTORY OF IHL AND SOME CONTEMPORARY
CHALLENGES

1. From ancient battlefields to industrialized war
War is as old as mankind, and all civilizations and religions have tried to limit
its devastating effects by subjecting warriors to customary practices, codes of
honour and local or temporary agreements with the adversary. These traditional
forms of regulating warfare became largely ineffective with the rise of con-
scripted mass armies and the industrialized production of powerful weapons in
the course of the nineteenth century – with tragic consequences on the battle-
field. Military medical services were not equipped to cope with the massive
number of casualties caused by modern weaponry; as a result, tens of thousands
of wounded, sick and dying soldiers were left unattended after battle. This trend,
which began with the Napoleonic Wars in Europe (1803–1815) and culminated
in the American Civil War (1861–1865), set the stage for a number of influen-
tial humanitarian initiatives, both in Europe and in North America, aimed at
alleviating the suffering of war victims and driving the systematic codification
of modern IHL.

• Françoise Hampson and Ibrahim Salama, The Relationship between Human
Rights Law and International Humanitarian Law, Working Paper submitted
to the UN Commission on Human Rights, document E/CN.4/Sub.2/2005/14,
21 June 2005.

• ICRC Advisory Services on International Humanitarian Law, International
Humanitarian Law and International Human Rights Law: Similarities and Differ-
ences. Available at: http://www.icrc.org/eng/assets/files/other/ihl_and_ihrl.pdf

How Does Law Protect in War?

• Case No. 23, The International Criminal Court

• Case No. 93, United States Military Tribunal at Nuremberg, The Justice Trial

• Document No. 98, The Tokyo War Crimes Trial

• Case, ECHR, Al-Jedda v. UK (only available online)

• Case, ECHR, Hassan v. UK (only available online)

• Case, UK, Serdar Mohammed v. Ministry of Defence
(only available online)

INTRODUCTION TO IHL 35

2. Humanitarian initiatives and first codifications
In Europe, the move towards codification of IHL was initiated by a business-
man from Geneva, Henry Dunant. On a journey through northern Italy in
1859, Dunant witnessed a fierce battle between French and Austrian troops
and, appalled at the lack of assistance and protection for more than 40,000
wounded soldiers, improvised medical assistance with the aid of the local
population. After returning to Geneva, Dunant wrote Un souvenir de Solferino
(A Memory of Solferino), in which he made essentially two proposals. First,
independent relief organizations should be established to provide care to
wounded soldiers on the battlefield and, second, an international agreement
should be reached to grant such organizations the protection of neutrality.
His ideas were well received in the capitals of Europe and led to the founding
of the International Committee of the Red Cross (1863) and to the adop-
tion by 12 States of the first Geneva Convention for the Amelioration of the
Condition of the Wounded in Armies in the Field (1864). The Convention
adopted the emblem of the red cross on a white background – the colours of
the Swiss national flag inverted – as a neutral protective sign for hospitals and
those assisting the wounded and sick on the battlefield. A parallel develop-
ment was triggered by the atrocities of the American Civil War and led to the
adoption by the government of the United States of the so-called Lieber Code
or, more accurately, the Instructions for the Government of Armies of the
United States in the Field (1863). Although the Lieber Code was a domestic
instrument and not an international treaty, it has influenced the development
and codification of modern IHL well beyond the borders of the United States.

3. Towards universal codification
Since the adoption of these first instruments, the body of treaty IHL has
grown in tandem with developments in warfare to become one of the most
densely codified branches of international law today.

In 1906, the original Geneva Convention was extended to further improve the
condition of sick and wounded soldiers and, in 1907, the Hague Regulations
concerning the Laws and Customs of War on Land formulated the basic rules
governing the entitlement to combatant privilege and prisoner-of-war status,
the use of means and methods of warfare in the conduct of hostilities, and the
protection of inhabitants of occupied territories from inhumane treatment.
After the horrors of chemical warfare and the tragic experience of millions
of captured soldiers during the Great War (World War I), these instruments
were supplemented by the Protocol for the Prohibition of the Use of
Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of
Warfare (1925) and, a few years later, a separate Geneva Convention relative
to the Treatment of Prisoners of War (1929).

36 CHAPTER 1

After the cataclysm of World War II, which saw massive atrocities committed
not only against wounded, captured and surrendering combatants
but also against millions of civilians in occupied territories, the 1949
Diplomatic Conference adopted a revised and completed set of four Geneva
Conventions: the Convention for the Amelioration of the Condition of the
Wounded and Sick in Armed Forces in the Field (First Geneva Convention),
the Convention for the Amelioration of the Condition of Wounded, Sick and
Shipwrecked Members of Armed Forces at Sea (Second Geneva Convention),
the Convention relative to the Treatment of Prisoners of War (Third Geneva
Convention) and the Convention relative to the Protection of Civilian Persons
in Time of War (Fourth Geneva Convention). The four Geneva Conventions
of 1949 are still in force today and, with 196 States Parties, have become the
most widely ratified treaties.43

With the establishment of the United Nations and the consolidation of
the bipolar world order of the Cold War, war no longer took place mainly
between sovereign States (international armed conflicts), but between gov-
ernments and organized armed groups (non-international armed conflicts).
On the one hand, former colonial powers were increasingly confronted with
popular demands for independence and self-determination, resulting in
wars of national liberation – from the Malay Peninsula through the Middle
East to the Maghreb and sub-Saharan Africa. On the other hand, policies
of mutual nuclear deterrence entailed a military stalemate between the United
States and the Soviet Union, which in turn resulted in a proliferation of
non-international proxy wars between governments and organized armed
groups, in which each side was supported by one of the superpowers.

So far, the only provision of treaty law applicable to non-international
armed conflicts had been common Article 3, which essentially requires the
protection and humane treatment of all persons who are not, or no longer,
taking an active part in hostilities. It was only in 1977 that two protocols
additional to the Geneva Conventions were adopted to further develop
treaty IHL. Additional Protocol I, “relating to the Protection of Victims
of International Armed Conflicts,” not only improves and clarifies the
protections already provided by the Geneva Conventions, it also contains
the first systematic codification of IHL governing the conduct of hostilities.
It also assimilates certain wars of national liberation against colonial
domination, alien occupation and racist regimes to international armed
conflicts, thus providing members of the insurgent forces the same rights
and privileges as are enjoyed by combatants representing a sovereign State.

43 See States party to the main treaties, ICRC reference document, available at: https://
ihl-databases.icrc.org/applic/ihl/ihl.nsf/vwTreatiesByCountry.xsp

INTRODUCTION TO IHL 37

Additional Protocol II, “relating to the Protection of Victims of Non-
International Armed Conflicts,” strengthens and further develops the
fundamental guarantees established by common Article 3 for situations of
civil war.

At the same time, efforts to avoid unnecessary suffering among combat-
ants and to minimize incidental harm to civilians have resulted in a range
of international conventions and protocols prohibiting or restricting the
development, stockpiling or use of various weapons, including chemical
and biological weapons,44 incendiary weapons,45 blinding laser weapons,46
landmines and cluster munitions.47 Moreover, States are now obliged to
conduct a review of the compatibility of any newly developed weapon with
the rules and principles of IHL.48

Concurrently, State practice has resulted in a considerable body of customary
IHL applicable in all armed conflicts,49 and the case-law of the Nuremberg
and Tokyo Tribunals, the ICJ, the ad hoc Tribunals for the former Yugoslavia,
Rwanda and Sierra Leone, and, most recently, the ICC has significantly con-
tributed to the clarification and harmonious interpretation of both customary
and treaty IHL.

Today, after 150 years of development, refinement and codification, the once
fragmented and amorphous codes and practices of the past have emerged as
a consolidated, universally binding body of international law regulating the
conduct of hostilities and providing humanitarian protection to the victims
of all armed conflicts. It is precisely at this point of relative maturity that the
advent of the new millennium has posed fresh challenges to the fundamental
achievements of IHL.

4. Current and emerging challenges

4.1 The “war on terror” and the rise of organized crime
No event embodies the global security challenges of the twenty-first century
more than the dramatic terrorist attacks of 11 September 2001 in New York
City and Washington, DC. Although, fortunately, these attacks have remained
exceptional in terms of scale and magnitude, they triggered a veritable

44 Biological Weapons Convention; Chemical Weapons Convention.
45 Protocol III to the Convention on Certain Conventional Weapons.
46 Protocol on Blinding Laser Weapons (Protocol IV to the 1980 Convention),

13 October 1995.
47 Anti-Personnel Mine Ban Convention; Convention on Cluster Munitions.
48 AP I, Art. 36. On the regulation of weapons in IHL, see Chapter 3.V.4–5 and VI.4.
49 See Textbox 1, Chapter 1.II.2.

38 CHAPTER 1

paradigm shift in national and international security policy. Within days
of the attacks, the United States had declared a global “war on terror,” the
UN Security Council had affirmed the right of self-defence against what
appeared to be an attack by a transnational terrorist group, and NATO
had for the first time in its history declared a case of collective self-defence
based on Article 5 of the North Atlantic Treaty. The decade-long nuclear
stalemate between superpowers was no longer perceived as the world’s
foremost security concern, and the focus shifted to the vulnerability of
modern, globalized society to the harm caused by sophisticated terrorist
groups and other forms of transnational organized crime. The emergence
of “war on terror” rhetoric, followed by military operations against sus-
pected terrorist groups and individuals in Afghanistan, Yemen, Somalia
and elsewhere, and the capture and transfer of hundreds of suspects to
detention centres like the US internment facility at Guantanamo Bay
Naval Station in Cuba raised a series of questions as to the nature and
consequences of these operations under international law. Can all or part
of the global “war on terror” be regarded as an armed conflict governed
by IHL? If so, what are the geographic delimitations of this conflict and
how does IHL interrelate with human rights law? What is the legal status
of suspected terrorists, including those deprived of their liberty? Are they
“unprivileged” combatants subject to direct attack? Or are they civilian
criminals subject to arrest and prosecution under the rules of law enforce-
ment? Once captured, are they entitled to combatant and prisoner-of-war
status, or are they to be treated as civilian internees? What are the judicial
guarantees and procedural rights of persons interned or prosecuted for
their alleged involvement in transnational terrorism? What limits does
the prohibition of torture and inhumane treatment impose on interro-
gation methods used to avert a perceived imminent terrorist threat? As
will be shown, some of these questions have been largely resolved, while
others remain controversial to this day. It is important to note, however,
that the legal challenges related to transnational terrorism are not an iso-
lated phenomenon, but are part and parcel of a broader trend towards
transnational organized crime becoming a primary international secu-
rity concern. Thus, similar questions with regard to the applicability and
interpretation of IHL may also arise in other contexts where States resort
to military means and methods in order to protect their internal and
external security, whether in large-scale counter-narcotics campaigns,
in multinational counter-piracy operations at sea, or even in particu-
larly dramatic cases of urban gang warfare or mass hostage-taking. As
a result of this trend, the distinction between peace and armed conflict,
and between policing and military hostilities, is becoming increasingly
blurred, and there is growing confusion as to the legal standards govern-
ing such situations.

INTRODUCTION TO IHL 39

➝ On the scope of application of IHL, see Chapter 2.

➝ On the legal status, treatment and procedural guarantees of per-
sons deprived of their liberty, including “unprivileged” combat-
ants, see Chapter 5.

4.2 Asymmetric conflicts and the challenge to non-reciprocity
Since the end of the Cold War, armed conflicts have become increasingly
asymmetric, typically pitting overwhelmingly powerful States against often
poorly organized and equipped armed groups. Prime examples of such con-
flicts are the multinational campaign against the Taliban in Afghanistan and
recurrent Israeli operations against Hamas in the Gaza Strip. The enormous
technological and military superiority of the States involved has led oppo-
sition groups to avoid identification and defeat by moving underground,
intermingling with the civilian population and engaging in various forms
of guerrilla warfare. As a result, military confrontations often take place in
the midst of densely populated areas, which not only exposes the civilian
population to increased risks of incidental harm, but also facilitates the
direct participation of civilians in hostilities. Moreover, unable to prevail
in direct confrontations with the enemy, armed groups are increasingly
tempted to resort to means and methods prohibited by IHL, such as mis-
using civilian clothing to perfidiously kill, wound or capture an adversary,
conducting indiscriminate attacks, or even directly targeting civilians,
humanitarian or medical personnel and their infrastructure (so-called “soft
targets”). State armed forces, in turn, are often unable to properly identify
the adversary and bear an increased risk of being attacked by persons they
cannot distinguish from the civilian population. Overall, this trend has put
considerable strain on the concepts of non-reciprocity and the equality of
belligerents and, unfortunately, on the willingness of both State armed forces
and non-State armed groups to accept their obligations under IHL.

4.3 Privatization and civilianization of military and security activities
The armed forces have always been supported by civilians, including con-
tractors and employees of civilian government services. Indeed, except in a
few very specific cases,50 IHL does not prohibit the outsourcing of military
and security functions but even stipulates that civilians formally author-
ized to accompany the armed forces in an international armed conflict be

50 Most notably, the 1949 Geneva Conventions require that “[e]very prisoner of war camp
shall be put under the immediate authority of a responsible commissioned officer belong-
ing to the regular armed forces of the Detaining Power” (GC III, Art. 39), and that “[e]very
place of internment shall be put under the authority of a responsible officer, chosen from
the regular military forces or the regular civil administration of the Detaining Power”
(GC IV, Art. 99).

40 CHAPTER 1

entitled to prisoner-of-war status upon capture.51 The past decade, however,
has seen an unprecedented trend towards the outsourcing of functions tra-
ditionally assumed by State armed forces to private military and security
companies. In the recent wars in Iraq and Afghanistan, for example, tens of
thousands of private contractors were deployed, and there were even periods
when they clearly outnumbered the multinational forces on the ground.
Depending on the context, such companies may assume a wide variety of
functions, ranging from reconstruction, logistics, training and administra-
tive services to the provision of security for civilian and military personnel
and infrastructure, and from the maintenance and operation of complex
weapon systems to guarding and interrogating detainees. Some of their
activities are so closely related to combat operations that their personnel
risk being regarded as directly participating in the hostilities and, depending
on the circumstances, even as mercenaries.52 The privatization of military
functions also raises a number of serious humanitarian concerns. First,
it must be emphasized that States cannot, through the practice of out –
sourcing, absolve themselves of their legal responsibilities under IHL. Thus,
they remain responsible for ensuring that the private military and security
companies that are contracted by them, or that operate or are incorporated
in their territory, respect all applicable laws and regulations, including IHL.
Moreover, whatever their functions or activities may be, private contractors
never fall outside the protection of IHL. In short, contrary to popular per-
ception, private military and security contractors do not operate in a legal
void.

➝ On civilian participation in hostilities, see Chapter 3.I.4.

51 GC III, Art. 4(4) and (5).
52 For the definition of mercenaries under IHL, see AP I, Art. 47 and CIHL, Rule 108.

INTRODUCTION TO IHL 41

Textbox 3: The Montreux Document
The Montreux Document on Pertinent International Legal Obligations and Good Prac-
tices for States related to Operations of Private Military and Security Companies during
Armed Conflict (Montreux Document) is the product of a joint initiative launched in
2006 by the Swiss government and the ICRC. It aims to clarify existing international
obligations relevant to the operations of private military and security companies in sit-
uations of armed conflict and to provide support and guidance for the implementation
of those obligations. It focuses on practical issues of humanitarian concern and does not
take a stance on the important, but separate, question of the legitimacy of using such
companies in armed conflicts.

The Montreux Document consists of two parts. Part I restates the obligations of States,
private military and security companies and their personnel under existing international
law, including both IHL and human rights law, with regard to the operations of such
companies in situations of armed conflict. In addressing the obligations of States, the
Montreux Document differentiates between States using the services of such companies
(contracting States), States in whose territory the companies operate (territorial States)
and States in whose territory they are headquartered or incorporated (home States). Part
I also addresses the obligations of “all other States,” the duties of private military and
security companies and their personnel, and questions of superior responsibility and of
State responsibility for the companies’ conduct. Part II provides a compilation of good
practices designed to assist contracting, territorial and home States in complying with
these legal obligations. The good practices are based largely on existing State practice in
related areas and include measures such as introducing transparent licensing regimes,
requiring adequate training and ensuring civil and criminal accountability.

The Montreux Document was developed between January 2006 and September
2008 with the support of governmental experts from 17 States and in consultation with
representatives of civil society and of the private military and security industry. The
Montreux Document does not create any new legal obligations, nor does it legitimize or
provide a legal basis for the use of private military and security companies.

• For further details, see Montreux Document on Pertinent International Legal
Obligations and Good Practices for States related to Operations of Private Military
and Security Companies during Armed Conflict, ICRC and Federal Department of
Foreign Affairs, Switzerland, August 2009, 44 pp.

• An updated list of supporting States and organizations can be found at:
https://www.eda.admin.ch/eda/en/home/foreign-policy/international-law/
international-humanitarian-law/private-militar y-security-companies/
participating-states.html

42 CHAPTER 1

4.4 New weapons technologies
In many contemporary armed conflicts, military operations and weapon
systems have attained an unprecedented level of complexity, involving the
coordination of a great variety of interdependent human and technological
resources in different locations spread across the globe. In conjunction with
the advent of new technologies, such as remote-controlled weapons, means
of cyber-warfare, nanotechnology and increasingly autonomous weapons,
this development poses a significant challenge to the interpretation and
application of IHL.

(a) Remote-controlled drones
For example, the systematic use of remote-controlled drones for counter-
terrorist operations in countries such as Afghanistan, Pakistan and Yemen
raises questions as to the applicability of IHL to these operations and,
consequently, as to the rules governing the use of lethal force against the
persons targeted. Where IHL is applicable, the systematic use of drones
raises concerns with regard to the reliability of the targeting information
used, the exposure of the civilian population to incidental harm, and the
inability of the attacker to care for the wounded, or to capture rather than
kill.

(b) Cyber-warfare
Another relatively recent development is the expansion of military oper-
ations into cyberspace, the so-called “fifth domain of warfare” next to
land, sea, air and space. While it is generally uncontested that IHL would
also apply to cyber operations conducted in relation to an existing armed

Unmanned aerial systems: a Predator aircraft ready for take-off, 2004.

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INTRODUCTION TO IHL 43

conflict, it is unclear whether cyber operations, in and of themselves, could
give rise to an armed conflict and, thus, trigger the applicability of IHL.
Also, once cyber operations are governed by IHL, questions arise as to what
exactly amounts to “attacks” – defined in IHL as “acts of violence”53 – in
cyberspace, and how the proportionality of “collateral damage” to civilian
infrastructure should be assessed, particularly in view of the fact that mili-
tary and civilian computer networks are generally interconnected. Also,
what precautions can and must be taken to avoid the risk of excessive inci-
dental damage to civilian objects whose functioning depends on computer
systems (hydro-electric and nuclear plants, hospitals, etc.)? How can it be
ensured that this damage does not ultimately cause erroneous or excessive
harm to persons and objects protected against direct attack? What does the
duty of combatants to distinguish themselves from the civilian population
mean in cyberspace? Cyber-warfare also raises legal questions of fundamen-
tal importance in other areas of international law, such as jus ad bellum and
the law of neutrality. These questions must be resolved through careful
interpretation of existing IHL treaties and customary rules. The current dis-
cussion on the interpretation and application of international law in cyber-
space involves a growing number of academic, national and international
fora, and it will certainly take time for a consensus to emerge in that regard.
This ongoing process, however, should not lead to the misperception of a
legal void in this “fifth domain,” but must build on the premise that existing
international law fully applies in cyberspace. In situations of armed conflict,
that includes all relevant rules and principles of IHL.

53 AP I, Art. 49(1).

Personnel at the Air Force Space Command Network Operations & Security Center at Peterson
Air Force Base in Colorado Springs, Colorado, 2014.

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44 CHAPTER 1

54 55

54 The full text of the Tallinn Manual is available at: http://issuu.com/nato_ccd_coe/docs/
tallinnmanual

55 To determine what situations qualify as armed conflicts under IHL, see Chapter 2.III–V.

Textbox 4: Tallinn Manual on the International
Law Applicable to Cyber Warfare

In 2009, the NATO-affiliated Cooperative Cyber Defence Centre of Excellence launched
a multi-year project aimed at producing the Tallinn Manual on the International Law
Applicable to Cyber Warfare (Tallinn Manual).54 The project brought together experts in
international law, professional and academic, predominantly from NATO and NATO-
allied military circles, with observers from the ICRC, the United States Cyber Command
and the Centre of Excellence, in an effort to examine how existing rules and principles of
international law can be applied to cyber-warfare.

The Tallinn Manual is intended to restate and clarify international law governing
cyber-warfare, including both the law governing the use of inter-State force (jus ad
bellum), and the law governing the conduct of international and non-international armed
conflicts (jus in bello). It does not address cyber activities occurring below the threshold
of “use of force” (jus ad bellum) or of an armed conflict (jus in bello),55 nor does it examine
human rights law, international criminal law or international telecommunications law.
It is divided into ninety-five “blackletter” rules, each accompanied by a commentary.
The “blackletter” rules constitute a restatement of the international law of cyber conflict.
The commentary accompanying each rule identifies the legal basis on which the rule was
developed, expands on its application in practice and sets forth differing positions as to its
scope or application.

The Tallinn Manual process is currently the most significant initiative to restate and
clarify international law as it applies to cyber-warfare. It should be noted, however, that
the Manual is not legally binding and does not necessarily represent the views of NATO
or any other organization, or of any State. Instead, it reflects solely the opinions of the par-
ticipating experts, all acting in their individual capacity. Moreover, it does not make any
recommendations with regard to how the law should be clarified and developed; it simply
restates and comments on the law as the participating experts see it. It was published in
2013 by Cambridge University Press.

• See Michael Schmitt (ed.), Tallinn Manual on the International Law Applicable
to Cyber Warfare, Cambridge University Press, Cambridge, 2013, 300 pp.

INTRODUCTION TO IHL 45

(c) Ongoing developments: Nanotechnology
and autonomous weapons

Other technological developments of potential concern to IHL are the
introduction of nanotechnology and increasingly autonomous weapons on
contemporary battlefields. While nanotechnology is already being used in
current military operations, most notably to enhance the performance of
certain ammunitions and armour plating, the development of fully autono-
mous robots capable of taking targeting decisions independently of human
involvement may still be decades away. However, this prospect clearly raises
questions as to the operational control of such weapon systems and the legal
and criminal responsibility for the harm done by them in case of actions
violating IHL. The most important observation to be made here is that the
responsibility to ensure that all means and methods used in an armed con-
flict comply with IHL will always remain with the parties to that conflict.
Moreover, any individual act or omission amounting to criminal involve-
ment in violations of IHL will remain subject to prosecution and punish-
ment, even if the ultimate “decision” to commit the crime in question was
taken by a machine based on programs and algorithms rather than on real-
time commands by a human operator.

➝ On the duty of States to conduct a legal review of new weapons
technologies, see Chapter 3.V.5.

The United States Army works with industry and universities to study micro-robotics and develop
technologies allowing soldiers to see threats lurking just beyond their range of vision using auton-
omous robots the size of bats and hummingbirds and even as small as fruit flies, 2012.

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46 CHAPTER 1

4.5 Respect for IHL
The legal and practical difficulties arising as a result of changes in the contem-
porary security environment have caused confusion and uncertainty not only
about the distinction between armed conflict and law enforcement, but also
about the traditional categorization of persons as civilians and combatants and
the temporal and geographic delimitation of the “battlefield.” As most poignantly
evidenced by the controversies surrounding the legal framework governing the
various aspects of the United States’s “war on terror,” that confusion and uncer-
tainty have also provoked doubt about the adequacy of existing IHL to cope with
the emerging security challenges of the twenty-first century. In response, various
key stakeholders have launched important processes aimed at analysing, reaf-
firming and clarifying IHL in areas of particular humanitarian concern, includ-
ing, most recently, the ICRC’s initiative on strengthening legal protection for
victims of armed conflicts and the joint initiative of Switzerland and the ICRC
on strengthening mechanisms for the implementation of IHL (see Textbox 9,
Chapter 7.III.4.b). These processes remain ongoing, but two preliminary obser-
vations can already be drawn from the preparatory work and initial discussions.
First, there may indeed be certain areas of IHL that require further strengthen-
ing in order to better protect individuals exposed to contemporary armed con-
flicts. The most urgent humanitarian need, however, is not to adopt new rules
but rather to ensure actual compliance with the existing legal framework.

➝ On the implementation and enforcement of IHL, see Chapter 7.

➝ On the special role of the ICRC with regard to the implementation
and enforcement of IHL, see Chapter 8.

Keysaney Hospital in Mogadishu, Somalia, 1991. Note the red cross and red crescent emblems and
the instructions prohibiting entry with weapons.

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INTRODUCTION TO IHL 47

56

56 All ICRC documents available at: www.icrc.org

To go further (A Brief History of IHL and Contemporary Challenges for IHL)56

• The Story of an Idea, film, ICRC, 2008. Available at: https://www.youtube.
com/watch?v=I9bsmnuJU-o

• Henry Dunant, A Memory of Solferino, ICRC, Geneva, 1986, 147 pp.

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 3: Historical development of inter-
national humanitarian law, pp. 139–148.

• Mary Ellen O’Connell, “Historical development and legal basis,” in Dieter
Fleck (ed.), The Handbook of International Humanitarian Law, 3rd ed.,
Oxford University Press, Oxford, 2013, pp. 1–42.

• Gabor Rona, “Interesting times for international humanitarian law: Challenges
from the ‘war on terror’,” The Fletcher Forum of World Affairs, Vol. 27(2), Sum-
mer/Fall 2003, pp. 55–74.

• Robin Geiss, “Asymmetric conflict structures,” IRRC, Vol. 88, No. 864,
December 2006, pp. 757–777.

• “Private military companies,” IRRC, Vol. 88, No. 863, September 2006.

• “Business, violence and conflict,” IRRC, Vol. 94, No. 887, Autumn 2012.

• “New technologies and warfare,” IRRC, Vol. 94, No. 886, Summer 2012.

• ICRC Advisory Services on International Humanitarian Law, What Is Inter-
national Humanitarian Law?, 2004.

• “Current debates on IHL,” webpage, ICRC. Available at:
https://www.icrc.org/en/war-and-law/contemporary-challenges-for-ihl

How Does Law Protect in War?

• Case No. 85, United States, The Prize Cases

• Case No. 263, United States, Status and Treatment of Detainees held in
Guantánamo Naval Base

• Case No. 286, The Conflict in Western Sahara

• Case No. 288, United States, The September 11 2001 Attacks

Chapter 2
Scope of application of IHL

Kabul, Afghanistan. Military Training Centre, 2007. A member of the International Security
Assistance Force contingent provided by the former Yugoslav Republic of Macedonia on patrol.

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50 CHAPTER 2

Structure
I. Relevance and definition of the term “armed conflict”
II. Distinction between international and non-international

armed conflicts
III. International armed conflicts
IV. Belligerent occupation
V. Non-international armed conflicts
VI. Armed conflicts involving foreign intervention

In a nutshell

➝ Once an armed conflict exists, any action taken for reasons
related to that conflict is governed by IHL.

➝ An armed conflict exists whenever recourse is had to armed force
or belligerent occupation between States (international armed
conflicts), or when protracted armed violence takes place be-
tween governmental authorities and organized armed groups
or between such groups (non-international armed conflicts).

➝ Belligerent occupation exists to the extent, and for as long as,
one State maintains military authority over all or part of the
territory of another State, even if such occupation encounters
no armed resistance.

➝ Armed conflicts involving foreign (including multinational)
intervention are deemed to be international or non-international
in nature depending on whether they involve armed confronta-
tions between States, or between States and organized armed
groups.

➝ Legally speaking, there are no other types of armed conflict.
Internal disturbances and tensions – riots, isolated and spo-
radic acts of violence and similar acts – do not amount to
armed conflict.

SCOPE OF APPLICATION OF IHL 51

57
Attempts to restrain and regulate the conduct of belligerent parties have
always been accompanied by disagreements over which situations should be
governed by the relevant rules. Precise definitions of concepts such as “war,”
“armed conflict” or “occupation” were adopted to clarify this question, but
belligerents soon began to evade their obligations on the grounds that either
the situation at hand or the opposing party had failed to meet the legal cri-
teria required for the applicability and protection of the law. It is therefore
of particular importance to examine the treaty terminology and customary
concepts determining and delimiting the temporal, territorial, material and
personal scope of applicability of contemporary IHL.

I. RELEVANCE AND DEFINITION OF THE TERM
“ARMED CONFLICT”

IHL is specifically designed to govern armed conflicts. As such, it contains
detailed provisions regulating the means and methods of warfare and the
protection of persons and objects having fallen into the power of a belliger-
ent party. Once an armed conflict exists, any action taken for reasons related
to that conflict must comply with IHL. Conversely, IHL does not apply to
inter-State confrontations that fall short of armed conflict, or to internal

57 All ICRC documents available at: www.icrc.org

To go further57

• Panel Discussion – Scope of the law in armed conflict, ICRC, February 2015.
Recording available at: https://www.icrc.org/en/event/scope-of-law

• ICRC e-learning module, When does international humanitarian law apply?
Available at: http://www.icrcproject.org/elearning/en/ihl/M4/index.html

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 2: International humanitarian law as
a branch of public international law, pp. 121–136.

• Jelena Pejic, “Extraterritorial targeting by means of armed drones: Some legal
implications,” IRRC, Vol. 96, No. 893, Spring 2014, pp. 67–106.

• “Scope of application of the law in armed conflict,” IRRC, Vol. 96, No. 893,
Spring 2014.

• “Typology of armed conflicts,” IRRC, Vol. 91, No. 873, March 2009.

52 CHAPTER 2

disturbances and tensions, such as riots, isolated and sporadic acts of vio-
lence and similar acts not amounting to armed conflict.58

In the absence of an armed conflict, therefore, any difference between States
and any question of individual protection must be resolved in accordance
with the law applicable in peacetime. For example, nationals of one State
who are detained in another State will be protected by human rights law
and, depending on the circumstances, may enjoy the diplomatic and consu-
lar protection of their State of origin or benefit from protection under inter-
national refugee law. However, they will not be entitled to the status and
protection afforded by the 1949 Geneva Conventions, such as the right of
prisoners of war or civilian internees to receive visits from the ICRC. Also,
in situations not reaching the threshold of armed conflict, any use of force or
other exercise of authority by States against groups and individuals within
their jurisdiction remains governed by human rights law, and any violence
or other harm caused by such groups and individuals remains a matter of
law enforcement governed primarily by national law.

Although the existence of an armed conflict is an absolute prerequisite for
the applicability of IHL as a whole, some of the duties it stipulates may apply
already in peacetime, and certain of its protections may extend beyond the
end of an armed conflict. For example, many weapons treaties prohibit not
only the use, but also the development, stockpiling, production and sale of
certain weapons by States, and require them to subject the development or
acquisition of any weapon to a legal review.59 States also have peacetime
duties with respect to IHL training and dissemination and in relation to the
investigation and prosecution of serious violations of IHL (war crimes).60
Moreover, persons deprived of their liberty for reasons related to an armed
conflict remain protected by IHL until they have been released and repatri-
ated or their status has otherwise been normalized, if necessary even years
after the end of the conflict. Likewise, IHL remains applicable in territories
that remain occupied after the cessation of active hostilities until a political
solution for their status has been found.

Despite the significant legal and humanitarian consequences triggered by
the existence of an armed conflict, treaty law provides no comprehensive and
precise definition of what constitutes an armed conflict. The interpretation

58 AP II, Art. 1(2).
59 See Chapter 3.V.5.
60 See Chapter 7, Sections II.2. and V.3.

SCOPE OF APPLICATION OF IHL 53

and clarification of that concept is therefore largely left to State practice,
international case-law and legal scholars.61

II. DISTINCTION BETWEEN INTERNATIONAL
AND NON-INTERNATIONAL ARMED CONFLICT

IHL treaties distinguish between two types of armed conflict: (a) interna-
tional armed conflicts, which occur between two or more States, and (b)
non-international armed conflicts, which take place between States and
non-governmental armed groups, or between such groups only.

This dichotomy between international and non-international armed conflicts
is a result of political history rather than military necessity or humanitarian
need. For centuries, sovereign States have regulated their relations in both
peace and war through treaties and custom, a tradition based on mutual
recognition of national sovereignty and international legal personality.
Conversely, governments have long been reluctant to subject their efforts to
maintain law and order and public security within their territorial borders
to the purview of international law. The incorporation of the concept of non-
international armed conflict in common Article 3 therefore constituted a
landmark in the development and codification of IHL. From that moment
on, organized armed groups were considered “parties” to an armed conflict
with their own obligations under international law, irrespective of any formal
recognition of belligerency by the opposing State. At the same time, the con-
tracting States emphasized that the provisions of common Article 3 “shall not
affect the legal status of the Parties to the conflict.”62 In other words, treaty
recognition of organized armed groups as belligerent parties implies neither
that they are legitimate nor that they have full legal personality under interna-
tional law. This historical background has shaped the current body of treaty
IHL, which is, as a result, much more extensive for international than for
non-international armed conflicts, even though the humanitarian and mili-
tary rationales are essentially the same for both types of conflict.63

Despite the practical similarities, however, there are decisive differences
between international and non-international armed conflicts, and this makes it
indispensable to maintain the distinction between them.

61 On the relevance and definition of armed conflict, see ICRC, How is the Term “Armed
Conflict” Defined in International Humanitarian Law, Opinion Paper, March 2008.

62 GC I–IV, common Art. 3.
63 For a historical review of the developments leading to the adoption of common Article 3,

see ICRC, Commentary on the First Geneva Convention: Convention (I) for the Amelio-
ration of the Condition of the Wounded and Sick in Armed Forces in the Field, 2nd ed.,
ICRC/Cambridge University Press, 2016.

54 CHAPTER 2

The most important difference concerns the threshold of violence required for
a situation to be deemed an armed conflict. Given that jus ad bellum imposes
a general prohibition on the use of force between States, any such use can be
legitimately presumed to express belligerent intent and to create a situation
of international armed conflict, which must be governed by IHL. By contrast,
within their own territory, States must be able to use force against groups or
individuals for the purpose of law enforcement; and the use of force by such
groups or individuals against each other or against governmental authorities
generally remains a matter of national criminal law. As a consequence, the
threshold of violence required to trigger a non-international armed conflict and,
thereby, the applicability of IHL is significantly higher than for an international
armed conflict. Another important reason for maintaining the distinction
between international and non-international armed conflict is the position
taken by many States that equating the two types of armed conflict could be
perceived as providing armed opposition groups with international status and
might therefore undermine State sovereignty and encourage rebellion.

It is important to note that, in terms of legal concept, the categories of
international and of non-international armed conflict are absolutely
complementary in that they cover all conceivable situations triggering the
applicability of IHL. Legally speaking, no other type of armed conflict
exists. As will be shown, this does not preclude the two types of armed
conflict from coexisting, or a situation from evolving from one type of
armed conflict into another.

III. INTERNATIONAL ARMED CONFLICTS

1. Treaty law
The classic form of armed conflict is international in character and waged
between two or more States. Today, IHL governing situations of international
armed conflict is codified primarily in the Hague Regulations of 1907, the
four 1949 Geneva Conventions and Additional Protocol I. The treaty law is
supplemented by a rich body of customary IHL.

Common Article 2 provides that:

“[i]n addition to the provisions which shall be implemented in peace-
time, the present Convention shall apply to all cases of declared war
or of any other armed conflict which may arise between two or more
of the High Contracting Parties, even if the state of war is not recog-
nized by one of them;64 and

64 GC I–IV, common Art. 2(1).

SCOPE OF APPLICATION OF IHL 55

“(…) to all cases of partial or total occupation of the territory of a High
Contracting Party, even if the said occupation meets with no armed
resistance.”65

For States that have ratified Additional Protocol I, the situations referred to
in common Article 2 also include:

“armed conflicts in which peoples are fighting against colonial
domination and alien occupation and against racist régimes in the
exercise of their right of self-determination, as enshrined in the
Charter of the United Nations and the Declaration on Principles of
International Law concerning Friendly Relations and Co-operation
among States in accordance with the Charter of the United Nations.”66

Thus, the existence of an international armed conflict essentially depends
on two elements, namely the legal status of the belligerent parties and the
nature of the confrontation between them.

2. Legal status of the belligerent parties
Armed conflicts derive their international character from the fact that they
occur between High Contracting Parties to the 1949 Geneva Conventions,

65 GC I–IV, common Art. 2(2).
66 AP I, Art. 1(4).

Bombing in the Mekong Delta, Viet Nam, 1974.

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56 CHAPTER 2

which necessarily means States.67 States party to Additional Protocol I have
further agreed to recognize certain types of national liberation movements
as “parties” to an international armed conflict although they do not, at the
time, qualify as sovereign States under international law.68 Armed confron-
tations between parties that are neither States nor national liberation move-
ments cannot be regarded as international armed conflicts but constitute
either non-international armed conflicts or other situations of violence.

3. Nature of the confrontation:
“war,” “armed conflict” and “occupation”

International armed conflicts are belligerent confrontations between two or
more States. Traditionally, States expressed their belligerent intent (animus
belligerendi) through formal declarations of war, which, ipso facto, created a
political state of war and triggered the applicability of the law of war (jus in
bello) between them, even in the absence of open hostilities. Strictly speak-
ing, the traditional law of war is broader than IHL in that it comprises not
only humanitarian rules, but essentially all norms governing the relations
between belligerent States. This also includes provisions on diplomatic,
economic and treaty relations, and on the legal position of neutral States.
At the same time, the traditional law of war is narrower than IHL in that it
applies only during a formal state of war between States, whereas IHL estab-
lishes minimum standards of humanity that are applicable in any armed
conflict, irrespective of the existence of a political state of war.

Over the course of the twentieth century, formal declarations of war became
increasingly uncommon, and the political concept of “war” was largely
replaced by the factual concept of “armed conflict.” Today, an international
armed conflict is presumed to exist as soon as a State uses armed force
against another State, regardless of the reasons for or intensity of the
confrontation, and irrespective of whether a political state of war has been
formally declared or recognized. Although rarely referred to in case-law or
scholarly literature, belligerent intent remains an implied prerequisite

67 The 1949 Geneva Conventions have been universally ratified, i.e. by 196 States (February
2016).

68 See, for instance, AP I, Art. 96(3), which gives such movements the possibility to un-
dertake to apply the 1949 Geneva Conventions and Additional Protocol I by means of a
unilateral declaration addressed to the depositary. At the time of writing, this possibil-
ity had been used only once, namely by the Polisario Front in June 2015. See Protocole
additionnel aux Conventions de Genève du 12 août 1949 relatif à la protection des vic-
times des conflits armés internationaux (Protocole I), Listes des réserves et déclarations,
Autorité ayant fait la déclaration de l’article 96, paragraphe 3, webpage, Swiss Federal
Department of Foreign Affairs. Avail able at: https://www.eda.admin.ch/eda/fr/dfae/
politique-exterieure/droit-international-public/traites-internationaux/depositaire/
protection-des-v ictimes-de-la-g uerre/protocole-additionnel-au x-conventions-de-
gen%C3%A8ve-du-12-ao%C3%BBt-1949-relatif-a-la-protection-des-victimes-des-con-
flits-armes-internationaux-%28protocole-i%29.html

SCOPE OF APPLICATION OF IHL 57

for the existence of an international armed conflict. This means that the
applicability of IHL cannot be triggered by merely erroneous or accidental
causation of harm, or by violence on the part of individuals acting without
the endorsement or acquiescence of the State they represent. Acts of this
kind may entail the legal consequences of State responsibility, such as a duty
of reparation, but do not amount to armed conflict for want of belligerent
intent. In the presence of such intent, however, even minor instances of
armed violence – such as individual border incidents, the capture of a single
prisoner, or the wounding or killing of a single person – may be sufficient for
IHL governing international armed conflicts to apply.69

A number of caveats apply in this respect. In the special case of national liber-
ation movements, the required threshold of violence may be more similar to
that of situations of non-international armed conflict, depending on whether
the factual circumstances more closely resemble the relationship between
sovereign States or that between a governmental authority and a non-State
armed group. Furthermore, in two cases, an international armed conflict
may also be said to exist in the absence of open hostilities. First, the applic-
ability of IHL can still be triggered by a formal declaration of war. Second,
IHL automatically applies where the territory of one State is totally or par-
tially occupied by another State without the latter’s genuine consent, even
when such occupation meets with no armed resistance.

In sum, in the absence of a formal declaration of war, belligerent intent is
derived by implication from factual conditions rather than from official rec-
ognition of a political state of war. The existence of an international armed
conflict is determined, therefore, primarily by what is actually happening
on the ground.70 As a result, a situation may amount to an international
armed conflict and trigger the applicability of IHL even though one of the
belligerent States does not recognize the government of the adverse party71
or altogether denies the existence of a state of war.72

69 ICRC, Opinion Paper op. cit. (note 61); ICRC, Commentary on the First Geneva Conven-
tion, 2nd ed., 2016, op. cit. (note 63), Art. 2; See also ICTY, The Prosecutor v. Dusko Tadić
a/k/a “Dule,” Decision on the Defence Motion for Interlocutory Appeal on Jurisdiction,
Appeals Chamber, 2 October 1995, Case No. IT-94-1-AR72, para. 70.

70 ICTY, The Prosecutor v. Fatmir Limaj et al., Trial Chamber II (Judgment), 30 November
2005, Case No. IT-03-66-T, para. 89; ICTY, The Prosecutor v. Ljube Boškoski and Johan
Tarčulovski, Trial Chamber II (Judgment), 10 July 2008, Case No. IT-04-82-T, para. 176;
ICTR, The Prosecutor v. Jean-Paul Akayesu, Trial Chamber I (Judgment), Case No. ICTR-
96-4-T, 2 September 1998, para. 603.

71 GC III, Art. 4(A)(3).
72 GC I–IV, common Art. 2.

58 CHAPTER 2

4. Temporal and territorial scope of international armed conflicts

(a) Temporal scope of international armed conflicts
The applicability of IHL governing international armed conflicts begins with
a declaration of war or, in the absence of such declaration, with the actual
use of armed force expressing belligerent intent. It is also triggered by the
mere fact of one State invading another with a view to occupying all or part
of its territory, even when such invasion meets with no armed resistance.

An international armed conflict ends with a peace treaty or an equiva-
lent agreement, or with a unilateral declaration or other unambiguous act
expressing the termination of belligerent intent, such as a capitulation,
declaration of surrender, or unconditional, permanent and complete with-
drawal from previously contested territory. Today, international armed con-
flicts rarely end with the conclusion of a formal peace treaty; they more often
tend to terminate in a slow and progressive decrease in intensity, unstable
cease-fires and/or the intervention of peacekeepers.

Ultimately, the end of an armed conflict, like its beginning, must be
determined on the basis of factual and objective criteria. In this respect, the
cessation of hostilities, a ceasefire or armistice, and even a peace treaty do not
necessarily terminate an international armed conflict; rather, when taken in
conjunction with other elements, such factors are indicative of the belliger-
ents’ intention to bring the armed conflict to a permanent conclusion. The
decisive criterion must always be that the armed confrontation between the
belligerent parties has come to a lasting end in circumstances that can rea-
sonably be interpreted as a general cessation of military operations.

The temporal scope of an international armed conflict has to be distinguished
from the temporal scope of application of IHL rules related to those conflicts.
Indeed, the fact that a conflict has ended does not preclude certain aspects
of IHL from continuing to apply even beyond the end of the conflict. For
example, persons deprived of their liberty for reasons related to an armed con-
flict remain protected by IHL until they have been released and repatriated
or their status has otherwise been normalized,73 and former belligerents also
remain bound by obligations with a view to restoring family links,74 account-
ing for the dead and the missing and similar humanitarian endeavours.75 As
the ICTY observed, “International humanitarian law applies from the initi-
ation of such armed conflicts and extends beyond the cessation of hostilities

73 GC III, Art. 5; GC IV, Art. 6(4). See also Chapter 5, Sections II.2.c. and III.1.b.
74 See Chapter 6.I.2.b.
75 See Chapter 4, Sections VI and VII.6.

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SCOPE OF APPLICATION OF IHL 59

until a general conclusion of peace is reached (…) Until that moment, inter-
national humanitarian law continues to apply in the whole territory of the
warring States (…) whether or not actual combat takes place there.”76

(b) Territorial scope of international armed conflicts
In terms of territorial scope, the interpretation of the ICTY does not imply
that IHL cannot apply outside the territory of the belligerent parties. It is
merely intended to clarify that the applicability of IHL cannot be limited to
those areas of belligerent States where actual combat takes place, but that it
extends to any act having a nexus to the conflict (i.e. carried out for reasons
related to the conflict). Indeed, already under the traditional law of war, the
relations between belligerent States are governed by that law wherever they
meet, even though the law of neutrality may prevent them from engaging in
hostilities outside their respective territories, in international airspace or on
the high seas..77

76 ICTY, The Prosecutor v. Dusko Tadić, op. cit. (note 69), para. 70.
77 All ICRC documents available at: www.icrc.org

To go further (International armed conflicts)77

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 2: International humanitarian law
as a branch of public international law, pp. 126–127.

• Tristan Ferraro, “IHL applicability to international organisations involved in
peace operations,” in Proceedings of the 12th Bruges Colloquium – International
Organisations’ Involvement in Peace Operations: Applicable Legal Framework
and the Issue of Responsibility, 20–21 October 2011, Collegium No. 42, Autumn
2012, College of Europe/ICRC, pp. 15–22.

• “Scope of application of the law in armed conflict,” IRRC, Vol. 96, No. 893,
Spring 2014.

• ICRC, Commentary on the First Geneva Convention: Convention (I) for the
Amelioration of the Condition of the Wounded and Sick in Armed Forces in the
Field, 2nd ed., ICRC/Cambridge University Press, 2016, 1344 pp.

How Does Law Protect in War?

• Case No. 158, United States, United States v. Noriega, B. Place of Detention,
para. II. A

• Case No. 211, ICTY, The Prosecutor v. Tadić, Doc. A, paras 67–70 and Doc. B,
para. 562

60 CHAPTER 2

IV. BELLIGERENT OCCUPATION

1. Treaty law
IHL governing international armed conflicts also applies “to all cases of
partial or total occupation of the territory of a High Contracting Party, even
if the said occupation meets with no armed resistance.”78 In essence, belliger-
ent occupation occurs when one State invades another State and establishes
military control over part or all of its territory. Accordingly, Article 42 of the
Hague Regulations states: “Territory is considered occupied when it is actually
placed under the authority of the hostile army. The occupation extends only to
the territory where such authority has been established and can be exercised.”

Moreover, for States party to Additional Protocol  I, Article 1(4) of the
Protocol stipulates that IHL governing international armed conflicts also
applies to situations where the occupied territory does not belong to a
“High Contracting Party” (i.e. a State), but to a people fighting against alien
occupation in the exercise of its right of self-determination.

2. Prerequisite of “effective control”
Whether a territory is occupied within the meaning of IHL is a question
of fact and, in essence, depends on whether the occupying power has
established effective control over the territory in question. The existence of
occupation depends on a State’s factual ability to assume the de facto gov-
ernmental functions of an occupying power, most notably to ensure public
security, and law and order, and not by its willingness to do so. Therefore,
unless an occupying power actually loses military control over the territory
in question, therefore, it cannot escape its obligations under IHL by choos-
ing not to exercise effective control.79

Effective control does not necessarily have to be exercised directly through
the armed forces of the occupying power. Belligerent occupation can also
exist when a foreign State exerts overall control over local authorities who,
in turn, exercise their direct governmental control as de facto State agents on
behalf of the occupying power.80 Therefore, States cannot evade their obliga-
tions under occupation law through the use of proxies.

78 GC I–IV, common Art. 2(2).
79 See also ICRC, Expert Meeting: Occupation and Other Forms of Administration of Foreign

Territory, report prepared and edited by Tristan Ferraro, ICRC, Geneva, March 2012, p. 19.
80 Ibid., p. 23. See also ICTY, The Prosecutor v. Dusko Tadić a/k/a “Dule,” Trial Chamber

(Judgment), 7 May 1997, Case No. IT-94-1-T, para. 584. This was confirmed in ICTY,
The Prosecutor v. Tihomir Blaškić, Trial Chamber (Judgment), 3 March 2000, Case No.
IT-95-14-T, para. 149, and, implicitly, in ICJ, Armed Activities on the Territory of the Con-
go (DRC v. Uganda), Judgment, 19 December 2005, para. 177.

SCOPE OF APPLICATION OF IHL 61

Article 42 of the Hague Regulations clearly states that a territory is
considered occupied only to the extent effective control has actually been
established and can be exercised. In practice, therefore, delimiting the ter-
ritorial confines of an occupied area can be extremely difficult, particularly
in the case of partial occupation or where the situation on the ground can
change rapidly. In any event, the legal consequences of belligerent occupation
do not depend on a minimum duration or minimum geographic extension
of occupation, but simply on the actual existence of effective territorial control.
The inhabitants of occupied territory are collectively considered as having
fallen “into the hands” of the occupying power and are therefore entitled
to the full protection of the Fourth Geneva Convention immediately upon
establishment of effective control.

3. Invasion phase
While the text of Article 42 of the Hague Regulations is clear that territory
cannot be considered occupied during the invasion preceding the establish-
ment of effective control, the extent to which the Fourth Geneva Convention
applies during that phase is less clear. According to the so-called “Pictet
theory,” the Hague Regulations are based on a strictly territorial notion of
occupation, whereas the Fourth Geneva Convention extends its protection
to all individuals “who, at a given moment and in any manner whatsoever,
find themselves, in case of a conflict or occupation, in the hands of a Party
to the conflict or Occupying Power of which they are not nationals.”81 Given
the Convention’s focus on individual protection, some provisions set out
in Part III, Section III, on occupied territories, should apply even during
the invasion phase, commensurate with the level of control exercised and
to the extent that the civilian population has already come under the de
facto authority of the advancing hostile forces.82 Others argue that, prior
to the establishment of effective territorial control, only those provisions
of the Convention that are “common to the territories of the parties to the
conflict and to occupied territories”83 apply, thus providing a more limited
framework of protection for the population of invaded territories. Irrespec-
tive of which approach will ultimately prevail, it should be remembered that
applicable treaty provisions are always supplemented by universally binding
customary law, such as the fundamental guarantees reflected in common
Article 3 and in Article 75 of Additional Protocol I.

81 GC IV, Art. 4.
82 ICRC, Expert Meeting, op. cit. (note 79), pp. 24–26; ICTY, Prosecutor v. Mladen Naletilić

and Vinko Martinović, Trial Chamber (Judgment), Case No. IT-98-34-T, 31 March 2003,
para. 218.

83 That is, only GC IV, Part III, Section I (Arts 27–34).

62 CHAPTER 2

4. End of occupation
Although some territories, such as the occupied Palestinian territory, have
been occupied for decades, the occupying power’s role as a de facto authority
remains by definition temporary. Determining the end of belligerent occu-
pation, however, has rightly been described as a “thorny task” fraught with
political and legal issues of significant complexity.84 In principle, there are
three basic ways in which a situation of occupation can come to an end:
(a) withdrawal or loss of effective control, (b) genuine consent to a foreign
military presence, or (c) political settlement.

(a) Withdrawal or loss of effective control
Of course, the most obvious way for a belligerent occupation to end is a full
and voluntary withdrawal of the occupying forces and the restoration of
effective control on the part of the local government. Alternatively, the dis-
placed territorial State may attempt to regain control over areas under hostile
occupation through renewed hostilities. The 1949 Geneva Conventions also
anticipate the possibility of hostile activities against the occupying power
from within the occupied territory, including through the formation of armed
resistance movements.85 The fact that an occupying power is confronted with
renewed hostilities or armed resistance does not necessarily terminate the
state of occupation. As long as the occupying power maintains its capacity to
regain military control of the territory at any time it so desires, even hostilities
of significant intensity or temporary restrictions of its territorial control do
not terminate its status and obligations as an occupier under IHL.86

However, as soon as the ability of the occupying power to impose its military
authority is effectively eliminated for any length of time, the areas concerned
can no longer be regarded as occupied and the humanitarian obligations of
the former occupying power towards their inhabitants are limited to those of
any other party to the conflict. Situations of belligerent occupation that were
ended through voluntary or forced withdrawal include the countries occupied
by Germany and Japan in the course of World War II. A more contentious
case in point is the Israeli withdrawal from the Gaza Strip in September 2005.
Although Israel no longer has a permanent military presence in the Gaza
Strip, there is ongoing controversy as to whether and, if so, to what extent

84 ICRC, Occupation and Other Forms of Administration, op. cit. (note 79), p. 27.
85 See GC III, Art. 4(A)(2) (organized resistance groups operating within occupied terri-

tory) and GC IV, Arts 5(2) and 68 (hostile activities in occupied territory).
86 This view was already taken by the US Military Tribunal at Nuremberg after World War

II. See “Trial of Wilhelm List and others, United States Military Tribunal, Nuremberg,
8th July, 1947, to 19th February, 1948 (The Hostages Trial),” in Law Reports of Trials
of War Criminals, selected and prepared by the United Nations War Crimes Commis-
sion, Vol. VIII, His Majesty’s Stationery Office, London, 1949, p. 56. Available at:
http://www.loc.gov/rr/frd/Military_Law/pdf/Law-Reports_Vol-8.pdf

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Israel’s sporadic military incursions into the Gaza Strip, in conjunction with
its enforcement of sea blockades, border closures and air space control, entail
a continuation of its obligations as an occupier under IHL.87

The ICRC has argued that, in some specific and exceptional circumstances,
an occupying power would remain bound by certain obligations under the
law of occupation despite the physical withdrawal of its armed forces from
an occupied territory. In particular, when an occupying power retains,
within such territory, key elements of authority or other important govern-
mental functions, the law of occupation should continue to apply within the
relevant territorial and functional limits.

(b) Genuine consent to a foreign military presence
Situations of belligerent occupation can also come to an end if the territo-
rial State consents to the continued presence of foreign armed forces. Such
consent is usually – but not necessarily – given in conjunction with a full or
partial transfer of authority from the former occupier to the local govern-
ment. Clearly, in order to be valid, such consent must be genuine and cannot
be based on a coerced agreement between the occupying power and a local
regime, which would de facto stay under the control of the occupying power.

In order to avoid any potential abuse of such agreements, the Fourth Geneva
Convention provides that the inhabitants of occupied territories “shall not
be deprived, in any case or in any manner whatsoever, of the benefits of the
present Convention by any change introduced, as the result of the occupa-
tion of a territory, into the institutions or government of the said territory,
nor by any agreement concluded between the authorities of the occupied
territories and the Occupying Power, nor by any annexation by the latter of
the whole or part of the occupied territory.”88

Situations of belligerent occupation that ended through the transfer of author-
ity to the local government without the complete withdrawal of the former
occupation forces include the Federal Republic of Germany (5 May 1955) and
Japan (28 April 1952) after World War II, and Iraq after 30 June 2004.89

(c) Political settlement of the territorial status
Finally, a situation of belligerent occupation can end without the withdrawal
of the occupation forces through a political settlement involving the annex-
ation by the occupying power of all or parts of the occupied territory or,

87 See also ICRC, Occupation and Other Forms of Administration, op. cit. (note 79), pp. 47–48.
88 GC IV, Art. 47.
89 On the differences between Germany, Japan and Iraq, see, for example, ICRC, Occupation

and Other Forms of Administration, op. cit. (note 79), pp. 46–47 ff.

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64 CHAPTER 2

alternatively, the establishment of an independent State on such territory.
Again, in order to be valid, such a political settlement must be based on an
international agreement expressing the genuine consent of the territorial
State as to the future legal status of the territory in question. In principle, the
required consent can be replaced by a judgment of the ICJ where the States
involved have submitted to the Court’s jurisdiction. In the absence of consent
by the territorial State, it is further conceivable that an occupied territory
could gain political independence with the military support of the occupying
power in conjunction with widespread recognition by the international com-
munity as a sovereign State. Unilateral annexations by the occupying power,
however, may be binding as a matter of national law but have no effect on the
legal status of the occupied territories under international law. In particular,
the UN Security Council has confirmed the status of the West Bank, East
Jerusalem and the Syrian Golan Heights as occupied territories (1980).90

5. Multinational administration of territories
Recent years have seen novel forms of multinational territorial administration,
most notably the deployments by the United Nations in East Timor (United
Nations Transitional Administration in East Timor, or UNTAET, 1999–2002)
and Kosovo91 (United Nations Interim Administration Mission in Kosovo/
Kosovo Force, or UNMIK/KFOR, since 1999). This raises the question of the
extent to which such deployments could give rise to situations of belligerent
occupation under IHL, or whether the legal and policy framework governing
such deployments should be shaped by elements of the law of occupation.

Neither UNTAET nor UNMIK/KFOR conforms neatly to the traditional
concept of belligerent occupation, in particular because both were deployed
with the consent of Indonesia and the Federal Republic of Yugoslavia
respectively. Given that Belgrade’s agreement to the deployment of UNMIK/
KFOR was obtained only after a relentless aerial bombardment campaign,
it is at least questionable whether the subsequent consent by the Yugoslav
government can be regarded as genuine. Even coerced consent may be valid,
however, as long as such coercion is legitimized by a Chapter VII resolution
of the UN Security Council, which, arguably, was the case in the Kosovo
war. Also, the international community is unlikely to start authorizing
multinational deployments involving the invasion and belligerent
occupation of territory without the consent of the territorial State. For the
time being, therefore, the scenario of the law of occupation formally applying
to a UN-mandated multinational deployment remains fairly hypothetical.

90 UN Security Council Resolution 478 of 20 August 1980.
91 UN Security Council Resolution 1244 of 10 June 1999.

SCOPE OF APPLICATION OF IHL 65

Despite the formal inapplicability of the law of occupation, however, it is
clear that both UNTAET and UNMIK/KFOR assumed full de facto govern-
mental functions to the exclusion of the local authorities, and that both mis-
sions also exercised effective military control in the administered territories.
In the absence of an international legal framework specifically designed for
such situations, IHL governing belligerent occupation may provide useful
elements and guidance for determining policies with respect to issues such
as maintaining public safety, and law and order, ensuring the basic pro-
tection of persons and property, and taking charge of penal proceedings,
internment and other matters of public administration. Thus, until a more
complete legal and policy framework has been developed for multinational
territorial administration, the law of occupation should, and will, certainly
remain an important framework of reference for the translation of the
underlying UN mandates into specific policies and regulations.92 93

92 For a discussion on the relevance of occupation law for UN-administered territory, see
ICRC, Occupation and Other Forms of Administration, op. cit. (note 79), pp. 78–87 and
96–104 (Appendix 2).

93 All ICRC documents available at: www.icrc.org

To go further (Belligerent occupation)93

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 8: The protection of civilians,
pp. 231–248.

• Tristan Ferraro, “Determining the beginning and end of an occupation un-
der international humanitarian law,” IRRC, Vol. 94, No. 885, Spring 2012,
pp. 133–163. See especially pp. 139 ff. on the notion of “effective control.”

• “Occupation,” IRRC, Vol. 94, No. 885, Spring 2012.

• ICRC, Expert Meeting: Occupation and Other Forms of Administration of
Foreign Territory, report prepared and edited by Tristan Ferraro, ICRC,
Geneva, March 2012, 147 pp.

• ICRC, Commentary on the First Geneva Convention, 2nd ed.,
ICRC/Cambridge University Press, 2016, Article 2.

How Does Law Protect in War?

• Case No. 190, Iraq, The End of Occupation

• Case No. 236, ICJ, Democratic Republic of the Congo/Uganda, Armed Activities
on the Territory of the Congo, paras 173–178

• Case No. 291, Georgia/Russia, Independent International Fact-Finding Mission
on the Conflict in South Ossetia, paras 19–23

66 CHAPTER 2

V. NON-INTERNATIONAL ARMED CONFLICTS

The vast majority of contemporary armed conflicts are waged, not between
States, but between States and organized armed groups or between such
groups – they are non-international in character. Treaty IHL governing non-
international armed conflicts consists, first and foremost, of common
Article 3 and Additional Protocol II. A number of treaties on the regulation,
prohibition or restriction of certain types of weapon also apply in non-
international armed conflicts. Last but not least, owing to the relative
scarcity of applicable treaty IHL, customary law is of great importance for
the regulation of non-international armed conflicts. Treaty law distinguishes
between non-international armed conflicts within the meaning of common
Article 3 and non-international armed conflicts falling within the definition
provided in Article 1 of Additional Protocol II.

Ganta, Liberia, on the border with Guinea, 2003. Members of government armed forces/militias
in a pick-up truck.

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1. Article 3 common to the 1949 Geneva Conventions
During the negotiations preceding the adoption of the 1949 Geneva
Conventions, the proposal was made to extend the Conventions’ applicability
in toto to non-international armed conflicts.94 It soon became clear,
however, that States would agree to fully apply all four Conventions to non-
international armed conflicts only at the price of a very narrow definition

94 Final Record of the Diplomatic Conference of Geneva of 1949, Vol. II-B, pp. 120–129 and
325–339. See also ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016,
op. cit. (note 63), Art. 3.

SCOPE OF APPLICATION OF IHL 67

of non-international armed conflict that was highly unlikely to be met in
reality.95 As a consequence, the applicability of IHL to non-international
armed conflicts would probably have remained the exception instead of
becoming the rule. It was therefore ultimately decided to limit the provisions
applicable in non-international armed conflicts rather than the cases of
non-international armed conflict to which IHL would apply.96 Accordingly,
common Article 3 simply identifies a number of key duties and prohibitions
providing a minimum of protection to all persons who are not, or who are
no longer, taking an active part in the hostilities. In return, this “miniature
Convention”97 must be applied “as a minimum” by each party to any “armed
conflict not of an international character.”98 Common Article 3 reads as follows:

“In the case of armed conflict not of an international character occurring
in the territory of one of the High Contracting Parties, each Party to the
conflict shall be bound to apply, as a minimum, the following provisions:

1. Persons taking no active part in the hostilities, including members of
armed forces who have laid down their arms and those placed hors de
combat by sickness, wounds, detention, or any other cause, shall in all
circumstances be treated humanely, without any adverse distinction
founded on race, colour, religion or faith, sex, birth or wealth, or any
other similar criteria. To this end the following acts are and shall
remain prohibited at any time and in any place whatsoever with
respect to the above-mentioned persons:

(a) violence to life and person, in particular murder of all kinds,
mutilation, cruel treatment and torture;

(b) taking of hostages;
(c) outrages upon personal dignity, in particular, humiliating and

degrading treatment;
(d) the passing of sentences and the carrying out of executions

without previous judgment pronounced by a regularly
constituted court affording all the judicial guarantees which are
recognized as indispensable by civilized peoples.

2. The wounded and sick shall be collected and cared for.
An impartial humanitarian body, such as the International Committee
of the Red Cross, may offer its services to the Parties to the conflict.

95 See Final Record, op. cit. (note 94), pp. 120–129 (summarized in ICRC, Commentary on
the First Geneva Convention, 2nd ed., 2016, op. cit. (note 63), Art. 3).

96 ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016, op. cit. (note 63), Art. 3.
97 Statement of the Soviet delegate to the Conference. See Final Record, op. cit. (note 94),

p. 326.
98 GC I–IV, common Art. 3(1).

68 CHAPTER 2

The Parties to the conflict should further endeavour to bring into
force, by means of special agreements, all or part of the other
provisions of the present Convention.

The application of the preceding provisions shall not affect the legal
status of the Parties to the conflict.”

A non-international armed conflict within the meaning of common
Article  3 does not necessarily have to involve a government; it can also
take place entirely between organized armed groups, a scenario that is
particularly relevant in areas of weak governance, such as so-called “failed
States.” In order for a non-State armed group to be considered a “party” to a
conflict, common Article 3 does not require any recognition of belligerency
by the opposing State, nor popular support, territorial control or political
motivation. As will be shown, however, the concept of “party to an armed
conflict” presupposes a minimum level of organization without which
coordinated military operations and collective compliance with IHL would
not be possible. Furthermore, in order to qualify as an “armed conflict,” non-
international confrontations must always involve violence that reaches a
certain threshold of intensity.

2. Article 1 of Additional Protocol II
Additional Protocol  II, which was adopted in 1977, develops and supple-
ments common Article 3. The Protocol does not modify the conditions of
application of common Article 3, but defines its own scope of application
more restrictively and, therefore, cannot serve as a generic definition of
non-international armed conflict. Article 1 of the Protocol reads:

“1. This Protocol (…) shall apply to all armed conflicts which are
not [of international character] and which take place in the
territory of a High Contracting Party between its armed forces
and dissident armed forces or other organized armed groups
which, under responsible command, exercise such control over a
part of its territory as to enable them to carry out sustained and
concerted military operations and to implement this Protocol.

2. This Protocol shall not apply to situations of internal disturbances
and tensions, such as riots, isolated and sporadic acts of violence
and other acts of a similar nature, as not being armed conflicts.”

Thus, in contrast to common Article 3, Additional Protocol II applies only
to armed conflicts involving a contracting State as a party to the conflict
and taking place in the territory of that State. Moreover, part of the State’s
territory must be under the effective control of the opposition forces, thus

SCOPE OF APPLICATION OF IHL 69

assimilating their role to that of a de facto authority with direct obligations
not only towards the opposing party, but also towards the inhabitants of the
territory under their control. The Protocol’s high threshold of applicabil-
ity is indicative of the continuing reluctance of governments to expand the
international regulation of internal armed conflicts unless they develop into
situations comparable to international armed conflicts in many ways.

For the present purposes, the decisive advantages of Article 1 of Additional
Protocol II are, first, that it provides an objective threshold of factual criteria
at which the existence of a non-international armed conflict can no longer
be denied and, second, that it stipulates that situations of “internal distur-
bances and tensions, such as riots, isolated and sporadic acts of violence and
other acts of a similar nature,” do not constitute armed conflicts.99

3. Threshold of organization
Without a minimum level of organization, it is impossible to conduct
coordinated military operations and to ensure collective compliance with
IHL. Therefore, minimal organization has always been considered a defin-
ing element of armed forces or organized armed groups participating in
an armed conflict as opposed to participants in riots and other forms of
unorganized large-scale violence.100 While State armed forces are generally
presumed to satisfy this criterion, the level of organization of non-State
armed groups has in practice been assessed based on a series of indicative
factors including elements such as: “the existence of a command structure
and disciplinary rules and mechanisms within the group; the existence of a
headquarters; the fact that the group controls a certain territory; the ability
of the group to gain access to weapons, other military equipment, recruits
and military training; its ability to plan, coordinate and carry out military
operations, including troop movements and logistics; its ability to define a
unified military strategy and use military tactics; and its ability to speak with
one voice and negotiate and conclude agreements such as cease-fire or peace
accords.”101

4. Threshold of intensity
In relations between States, the general prohibition on the threat or use of force
established by the UN Charter means that essentially any use of force between

99 See also Rome Statute, Art. 8(2)(d) and (f ).
100 For references to the element of organization in treaty IHL governing both international

and non-international armed conflicts, see in particular GC III, Art. 4(A)(2) (“organ-
ized resistance movements”), AP I, Art. 43(1) (“all organized armed forces, groups and
units”), and AP II, Art. 1(1) (“other organized armed groups”).

101 ICTY, The Prosecutor v. Ramush Haradinaj et al., Trial Chamber I (Judgment), Case No.
IT-04-84-T, 3 April 2008, para. 60. See also ICRC, Opinion Paper, op. cit. (note 61), p. 3.

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70 CHAPTER 2

States gives rise to an international armed conflict. By contrast, the domestic
use of force by State authorities against private individuals, or the use of force
between such private individuals, generally remains a matter of law enforcement
governed primarily by human rights law and national criminal law. In order for
such a non-international confrontation to amount to armed conflict, it must be
clearly distinguishable from internal disturbances and tensions, such as riots,
isolated and sporadic acts of violence and other acts of a similar nature. Apart
from a sufficient level of military organization of each party to the conflict, this
also requires that the confrontation reach a threshold of intensity that cannot be
addressed through routine peacetime policing, but which requires the intervention
of armed forces.102 Accordingly, in order for a non-international armed conflict
to exist, the ICTY requires a situation of “protracted armed violence” between
a State and organized armed groups or between such groups,103 a criterion that
in practice has been interpreted as referring more to the intensity of the armed
violence than to its duration.104 Indicative factors for assessing “intensity” have
included: “the number, duration and intensity of individual confrontations; the
type of weapons and other military equipment used; the number and calibre
of munitions fired; the number of persons and type of forces partaking in the
fighting; the number of casualties; the extent of material destruction; and the
number of civilians fleeing combat zones. The involvement of the UN Security
Council may also be a reflection of the intensity of a conflict.”105

In sum, given the diversity of situations involving non-international
violence, their classification as armed conflict will always depend on a careful
assessment of the concrete circumstances rather than on a uniform definition,
particularly at the lower end of the scale of intensity. Nevertheless, the
existence of a non-international armed conflict always remains a question of
fact, and does not depend on political considerations of the parties involved.
In practice, the ICRC’s confidential memoranda reminding the parties of
their obligations under IHL can play an important role, as they generally also
express a view as to the legal classification of the situation.106 In contentious
cases, however, legally binding classifications will generally have to be made
by a court or quasi-judicial mechanism called on to adjudicate the question
as a matter of international law.

102 ICRC, Opinion Paper, op. cit. (note 61), p. 3.
103 ICTY, The Prosecutor v. Dusko Tadić, op. cit. (note 69), para. 70.
104 ICTY, The Prosecutor v. Ramush Haradinaj et al., op. cit. (note 101), para. 49.
105 Ibid.
106 See Chapter 8.III.

SCOPE OF APPLICATION OF IHL 71

5. Temporal and territorial scope of non-international
armed conflicts

(a) Temporal scope of non-international armed conflicts
In terms of temporal scope, non-international armed conflicts begin as soon
as armed violence occurring between sufficiently organized parties reaches
the required threshold of intensity. While these constitutive elements provide
objective criteria for the identification of a situation of armed conflict, in
political reality they are often interpreted with a certain latitude, particularly
by the government involved. While, in some contexts, States refuse to rec-
ognize the applicability of IHL despite organized armed violence claiming
thousands of victims every year, other confrontations are readily subjected
to a legal paradigm of “war” although they appear to have more in common
with law enforcement operations than with full-blown armed conflict.

Once a non-international armed conflict has been initiated, IHL applies until
“a peaceful settlement is achieved.”107 Here, too, various forms of settlement
are conceivable, from formal peace agreements or declarations of surrender
to the complete military defeat of either party or the gradual subsiding of
armed violence until peace and public security have been firmly re-estab-
lished. In practice, the end of a non-international armed conflict requires not
only the end of active hostilities but also the end of related military oper-
ations of a belligerent nature in circumstances in which the likelihood of their
resumption can reasonably be excluded.

(b) Territorial scope of non-international armed conflicts
In terms of territorial scope, the applicability of both common Article 3
and Additional Protocol  II is restricted to armed conflicts taking place “in
the territory” of a High Contracting Party; the Protocol even requires that
the territorial State be involved as a party to the conflict. The territorial
requirement is rooted in the fact that both instruments introduced binding
rules not only for the contracting States themselves, but also for non-State
armed groups operating on their territory. The legislative authority to do
so derives from, and is limited to, the territorial sovereignty of each con-
tracting State. It is therefore only logical that both instruments incorp-
orate a territorial link between the conflict and the contracting State.

Today, the territorial restriction of the scope of applicability of common
Article 3 and Additional Protocol II no longer serves its original purpose.
First, the four 1949 Geneva Conventions have been universally ratified, thus
making the scenario of a non-international armed conflict occurring entirely

107 ICTY, The Prosecutor v. Dusko Tadić, op. cit. (note 69), para. 70.

72 CHAPTER 2

outside the territory of a contracting State highly unlikely.108 Second, even
if such an armed conflict were to occur, it would still be governed by the
humanitarian provisions of common Article 3 by virtue of their recognition
as customary law and an expression of a general principle of law (“elemen-
tary considerations of humanity”) and, thus, as universally binding irre-
spective of treaty obligations.109 Third, whenever non-international armed
conflicts involved extraterritorial incursions with the consent of the neigh-
boring State, they were considered as part of the original non-international
armed conflict.110 Where such consent is absent, extraterritorial operations
may provoke an international armed conflict with the territorial State. In this
regard, there is a continuing controversy as to whether the newly triggered
international armed conflict coexists with the original non-international
armed conflict or whether it subsumes the latter, at least to the extent that it
occurs on foreign territory.

If any conceptual restriction of non-international armed conflict to the ter-
ritorial confines of one single State had existed in the minds of the draft-
ers of common Article 3 and Additional Protocol  II, it certainly remained
unspoken and has been manifestly outlived by contemporary legal opinion
and State practice. Even though the original aim of these provisions may
have been to regulate armed conflicts occurring within the territorial con-
fines of a State, the term “non-international” armed conflict today can no
longer be regarded as synonymous with “internal” armed conflict.

At the same time, in situations of non-international armed conflict, not only
does IHL apply in areas exposed to active hostilities, it governs essentially any
act or operation carried out for reasons related to the conflict (nexus to the
conflict), regardless of territorial location. This does not mean that military
action against the enemy can lawfully be taken anytime and anywhere in the
world (“global battlefield”). Rather, in order to be lawful, any extraterritorial
military action must always comply not only with the rules and principles of IHL,
but also with those of jus ad bellum, the law of neutrality and any other relevant
bodies of international law. Ultimately, non-international armed conflicts are
not characterized by their limited or unlimited territorial scope, but by the
nature and quality of the parties involved, and by the actual occurrence of
hostilities and other acts or operations having a belligerent nexus.

108 ICRC, Opinion Paper, op. cit. (note 61), p. 3.
109 ICJ, Nicaragua case, op. cit. (note 26), para. 218. On general principles of law, see also

Chapter 1.II.3.
110 See, for example, the interpretation by the United States government of the Ugandan

conflict as a “civil conflict,” even though the insurgent “Lord’s Resistance Army (LRA),
a terrorist organization (…) operated in the north from bases in southern Sudan,” in: US
Department of State, Country Reports on Human Rights Practices: Uganda, 2001, availa-
ble at: http://www.state.gov/j/drl/rls/hrrpt/2001/af/8409.htm

SCOPE OF APPLICATION OF IHL 73

111

VI. ARMED CONFLICTS SUBJECT
TO FOREIGN INTERVENTION

Armed conflicts subject to foreign intervention are a special form of armed
conflict sometimes also less accurately referred to as “internationalized”
armed conflicts. In essence, this concept refers to a State, or coalition of
States, intervening in a pre-existing non-international armed conflict,
thereby becoming a (co-belligerent) party to that conflict.

111 All ICRC documents available at: www.icrc.org

To go further (Non-international armed conflicts)111

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 12: The law of non-international
armed conflicts, pp. 327–350.

• Sandesh Sivakumaran, The Law of Non-International Armed Conflict, Oxford
University Press, Oxford, 2012, 370 pp.

• Jelena Pejic, “The protective scope of common Article 3: More than meets the eye,”
IRRC, Vol. 93, No. 881, March 2011, pp. 189–225.

• Sylvain Vité, “Typology of armed conflicts in international humanitarian law: Le-
gal concepts and actual situations,” IRRC, Vol. 91, No. 873, March 2009, pp. 69–94.

• ICTY, The Prosecutor v. Fatmir Limaj et al., Trial Chamber II (Judgment), 30
November 2005, Case No. IT-03-66-T, paras 84 and 89–91.

• ICRC, Commentary on the First Geneva Convention, 2nd ed.,
ICRC/Cambridge University Press, 2016, Article 3.

• “Current debates on IHL,” webpage, ICRC. Available at: https://www.icrc.org/
en/war-and-law/contemporary-challenges-for-ihl

How Does Law Protect in War?

• Case No. 149, Israel/Lebanon/Hezbollah Conflict in 2006

• Case No. 211, ICTY, The Prosecutor v. Tadić, Doc. A, paras 67–70, and Doc. B,
para. 562

• Case No. 220, ICTY, The Prosecutor v. Boškoski, paras 175–178

• Case No. 234, ICTR, The Prosecutor v. Jean-Paul Akayesu, paras 603 and 619–626

74 CHAPTER 2

In terms of applicable law, where a State intervenes in support of the territo-
rial government’s struggle against an insurgency, the relations between the
insurgency and the intervening State, just like the pre-existing conflict, will
be governed by IHL applicable to non-international armed conflicts. Where
the intervening State supports the insurgency against the territorial State,
however, the situation becomes more complex. The armed confrontations
between the intervening State and the territorial State will automatically
trigger the applicability of IHL governing international armed conflicts. The
confrontations between the territorial State and the insurgency, on the other
hand, will retain their non-international character and continue to be gov-
erned by IHL applicable to non-international armed conflicts. In terms of
applicable law, this results in the coexistence of an international and a
non-international armed conflict, a situation that is sometimes also referred
to as “double classification.” Finally, where an intervening State not only
supports, but actually directs and controls the insurgent party to such an
extent that its operations would have to be regarded as those of the interven-
ing State itself, the pre-existing non-international armed conflict between
the territorial State and an insurgency will be transformed into an interna-
tional armed conflict between the territorial and the intervening States.112

112 For the basic positions concerning the degree of control required to make a State
responsible for the conduct of an organized armed group, see in particular: ICJ,
Nicaragua case, op. cit. (note 26), para. 115; ICTY, The Prosecutor v. Duško Tadić, Appeals
Chambers (Judgment), Case No. IT-94-1-A, 15 July 1999, para. 145; ICJ, Application of
the Convention on the Prevention and Punishment of the Crime of Genocide (Bosnia and
Herzegovina v. Serbia and Montenegro), Judgment, 27 February 2007, para. 413.

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SCOPE OF APPLICATION OF IHL 75

As a general rule, the same principles of classification also apply to armed
interventions by multinational forces mandated by the UN or a regional
organization. It must be emphasized that the applicability of IHL to multi-
national forces depends on the same factual circumstances that apply to any
other force, irrespective of their international mandate and designation, and
irrespective also of the designation that may have been given to potential
parties opposing such forces. The mandate and the legitimacy of a mission
entrusted to multinational forces are issues of jus ad bellum and general
international law, but are strictly irrelevant when it comes to the applicabil-
ity of IHL to multinational operations. Therefore, where multinational forces
remain under their national command, they continue to be bound by the
international obligations of their State of origin. Where they operate under
the direct command of the UN, they are additionally required to respect
IHL by virtue of the UN Secretary-General’s Bulletin on the observance
by UN forces of international humanitarian law.113 In the ICRC’s view, in
both cases, the resulting conflict should be regarded as being international
in character in the event of hostilities between the multinational force and
one or several other States, and non-international in character if hostilities
are conducted against organized armed groups only.
114

113 United Nations Secretary-General’s Bulletin: Observance by United Nations Forces of
International Humanitarian Law, ST/SGB/1993/13, United Nations, New York, 6 August
1999.

114 All ICRC documents available at: www.icrc.org

To go further (Armed conflicts subject to foreign intervention)114

• Sylvain Vité, “Typology of armed conflicts in international humanitarian law:
Legal concepts and actual situations,” IRRC, Vol. 91, No. 873, March 2009,
pp. 87–88.

• “Multinational operations and the law,” IRRC, Vol. 95, No. 891/892, 2013.

• International Law Commission, “Draft articles on responsibility of states for
internationally wrongful acts, with commentaries,” Article 8, commentary,
para. 5, Yearbook of the International Law Commission, 2001, Vol. II, Part Two,
New York and Geneva, 2007, p. 48.

How Does Law Protect in War?

• Case No. 274, Case Study, Armed Conflicts in Sierra Leone, Liberia and
Guinea (1980–2005)

• Case No. 229, Democratic Republic of the Congo, Conflict in the Kivus

Chapter 3
The conduct of hostilities

Bangui, Central African Republic, 2013. Soldiers from the Democratic Republic of the Congo on
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78 CHAPTER 3

Structure
I. Protection of the civilian population
II. Protection of civilian objects, and of certain areas and

institutions
III. Proportionality, precautions and presumptions
IV. Methods of warfare
V. Means of warfare
VI. Specific issues arising in non-international armed conflicts

In a nutshell

➝ In all armed conflicts, the right of the belligerent parties to
choose methods or means of warfare is not unlimited.

➝ Belligerent parties must at all times distinguish between the
civilian population and combatants, and between civilian
objects and military objectives, and must direct their opera-
tions only against military objectives.

➝ Individual civilians enjoy protection against attack unless and
for such time as they directly participate in hostilities.

➝ The principle of distinction also entails a duty to prevent
erroneous targeting and to avoid or, in any event, minimize
the infliction of incidental death, injury or destruction on
civilians and civilian objects.

➝ With regard to any new weapon, means or method of warfare,
States must determine whether its employment would, in
some or all circumstances, be prohibited by international law,
most notably whether it would have indiscriminate effects,
cause unnecessary suffering or superfluous injury, or wide-
spread, long-term and severe damage to the environment, or
otherwise be incompatible with the principles of international
law as derived from established custom, the principles of
humanity or the dictates of public conscience.

THE CONDUCT OF HOSTILITIES 79

115

Throughout the history of warfare, the conduct of hostilities has inflicted
unspeakable suffering on millions of families and individuals. This remains
the case today. Civilians and combatants alike are killed, wounded or
maimed for life, and often lose loved ones or their property and belongings.
Landmines, cluster munitions and other unexploded ordnance render
entire regions uninhabitable for years and sometimes decades. Villages,
cities and individual dwellings are destroyed, cultural property and reli-
gious sites damaged, and power plants, bridges and other critical infra-
structure rendered useless, forcing entire populations to flee their homes,
with enormous humanitarian consequences. It has long been a central
objective of IHL, therefore, to prohibit unrestricted warfare and to regulate
the conduct of hostilities so as to mitigate, as much as possible, the “calam-
ities of war.”116

The three most fundamental maxims of IHL relevant to the conduct of hos-
tilities are as follows: (1) “the only legitimate object which States should
endeavour to accomplish during war is to weaken the military forces of the
enemy”;117 (2) in pursuing this aim, “the right of the Parties to the conflict to
choose methods or means of warfare is not unlimited”;118 and (3) “[t]he civil-
ian population and individual civilians shall enjoy general protection

115 All ICRC documents available at: www.icrc.org
116 St Petersburg Declaration.
117 Ibid.
118 AP I, Art. 35(1). See also Hague Regulations, Art. 22.

To go further115

• ICRC e-learning module, The basic principles of international humanitarian
law. Available at: http://www.icrcproject.org/elearning/en/ihl/M5/index.html

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 9: Conduct of hostilities, pp. 249–294.

• Yoram Dinstein, The Conduct of Hostilities under the Law of International
Armed Conflict, 3rd ed., Cambridge University Press, 2016, 358 pp.

• “Conduct of Hostilities,” webpage, ICRC. Available at:
https://www.icrc.org/en/war-and-law/conduct-hostilities

How Does Law Protect in War?

• Case No. 124, Israel/Gaza, Operation Cast Lead

80 CHAPTER 3

against dangers arising from military operations.”119 Therefore, IHL regulat-
ing the conduct of hostilities can be said to pursue two basic goals: first, to
ensure the protection of the civilian population and civilian objects from the
effects of the hostilities, and second, to impose constraints on certain
methods and means of warfare.

I. PROTECTION OF THE CIVILIAN POPULATION

The undisputed cornerstone of IHL aiming to protect the civilian population
from the effects of hostilities is the principle of distinction, according to which
parties to an armed conflict must “at all times distinguish between the civilian
population and combatants and between civilian objects and military objectives
and accordingly shall direct their operations only against military objectives.”120
The protective purpose of the principle of distinction can be achieved only if
the underlying categories of person (“civilians” and “combatants”) and objects
(“civilian objects” and “military objectives”) are defined, and if the scope and
conditions of the protection afforded to civilians and civilian objects are clear.

119 AP I, Art. 51(1).
120 AP I, Art. 48; CIHL, Rules 1 and 7.

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1. Definition of “combatants”
In a generic sense, combatants are members of the fighting forces of the bel-
ligerent parties. In principle, therefore, all members of the armed forces of
a party to an international armed conflict are combatants, except medical
and religious personnel assuming exclusively humanitarian functions.121
The only weapon-bearers who may be regarded as combatants without being
members of the armed forces are participants in a levée en masse.122 Persons
fighting outside these categories, such as mercenaries123 or civilians taking a
direct part in hostilities,124 are not entitled to combatant status.

➝ On the special protection afforded to medical and religious per-
sonnel, see Chapter 4.II.

➝ On the special protection afforded to members of the armed forces
exclusively assigned to civil defence duties, see Section II.4. below.

(a) Members of the armed forces
The armed forces of a party to a conflict comprise “all organized armed
forces, groups and units which are under a command responsible to that Party
for the conduct of its subordinates.”125 This broad and functional concept of
armed forces has evolved since the adoption of the Hague Regulations, which
already recognized that the “laws, rights, and duties of war” applied not only
to the regular armed forces, but also to irregular militia and volunteer corps,
provided that they fulfilled four conditions assimilating them to regular armed
forces: (1) they were commanded by a person responsible for his subordinates;
(2) they had a fixed distinctive emblem recognizable at a distance; (3) they
carried arms openly; and (4) they conducted their operations in accordance
with the laws and customs of war.126 The requirements of visible distinction
from the civilian population and respect for IHL are no longer considered
to be constitutive elements of the armed forces per se, but have become indi-
vidual obligations, the violation of which may entail consequences for the
individual combatant, most notably loss of the privilege of combatancy and
prisoner-of-war status (non-compliance with the visibility requirement)127 or

121 AP I, Art. 43(2); CIHL, Rule 3.
122 Hague Regulations, Art. 2; see also Section I.1.b.
123 AP I, Art. 47(1).
124 AP I, Art. 51(3).
125 AP I, Art. 43(1); CIHL, Rule 4.
126 Hague Regulations, Art. 1.
127 AP I, Arts 44(3) and 46; CIHL, Rules 106 and 107.

82 CHAPTER 3

prosecution (violations of IHL).128 In sum, today, all armed forces, groups or
units showing a sufficient degree of military organization and belonging to
a party to a conflict must be regarded as part of the armed forces of that
party.129

Individual membership in the regular armed forces of States is generally
regulated by domestic law and expressed through formal integration into
permanent units distinguishable by uniforms, insignia and equipment. The
same applies where armed units of police officers, border guards, or similar
uniformed forces are incorporated in State armed forces. For the purposes of
the principle of distinction, membership in regular State armed forces ceases,
and civilian status and protection are restored, when a member disengages
from active duty and returns to civilian life, whether after being discharged
from duty or as a deactivated reservist. Membership in irregularly constituted
armed forces, such as militias, volunteer corps, or organized resistance move-
ments belonging to a belligerent party, generally is not regulated by domestic
law and can be reliably determined only on the basis of functional criteria,
such as those applying to non-State armed groups in non-international armed
conflicts (“continuous combat function”).130

➝ On membership of non-State armed groups in non-international
armed conflicts, see Section VI.2 below.

(b) Participants in a levée en masse
In IHL, the term levée en masse is used to describe the inhabitants of a
non-occupied territory who, on the approach of the enemy, spontaneously
take up arms to resist the invading forces without having had time to form
themselves into regular armed units, provided they carry arms openly
and respect the laws and customs of war.131 As soon as a levée en masse
becomes continuous and organized, it is no longer regarded as such, but
as an organized resistance movement. Participants in a levée en masse are
the only armed actors regarded as combatants even though, by definition,
they operate spontaneously and lack sufficient organization and command
to qualify as members of the armed forces. All other persons who take a

128 J.-M. Henckaerts and L. Doswald-Beck, Customary International Humanitarian Law, op.
cit. (note 23), pp. 15–16.

129 N. Melzer, Interpretive Guidance on the Notion of Direct Participation in Hostilities under
International Humanitarian Law, ICRC, Geneva, 2009, p. 22.

130 N. Melzer, Interpretive Guidance, op. cit. (note 129), p. 25.
131 Hague Regulations, Art. 2; GC III, Art. 4(A)(6). See also the reference to GC III, Art. 4(A)

(6) in AP I, Art. 50(1).

THE CONDUCT OF HOSTILITIES 83

direct part in hostilities on a merely spontaneous, sporadic or unorganized
basis must be regarded as civilians.132

By definition, individual involvement in a levée en masse is based on spon-
taneous and unorganized “participation” in hostilities, and not on “mem-
bership,” which would imply a minimum of continuity and organization. It
therefore follows that participants in a levée en masse have combatant status
based on their immediate conduct, and that their loss of protection against
direct attack must be determined based on the same criteria that apply to
civilians directly participating in hostilities. Both categories of person par-
ticipate in hostilities on a merely spontaneous and unorganized basis, albeit
with different consequences as far as their entitlement to the privilege of
combatancy and prisoner-of-war status is concerned.

➝ On direct participation in hostilities by civilians, see Section I.4.
below.

➝ On prisoner-of-war status, see Chapter 5.I.2.

(c) Combatant status and combatant’s privilege
For the purposes of the principle of distinction, the most important con-
sequence associated with combatant status is the loss of civilian status and
of protection against direct attack. Moreover, combatant status entails the
“combatant’s privilege,” namely “the right to participate directly in hostilities”
on behalf of a party to an international armed conflict.133 The combatant’s
privilege as such has no immediate consequences in terms of the principle
of distinction but is of greater relevance for the status and rights afforded to
an individual after capture by the enemy. Combatant status and combatant’s
privilege are exclusive to situations of international armed conflict and are not
provided for in IHL governing non-international armed conflicts.

➝ On the relevance of combatant’s privilege in the context of
detention, see Chapter 5.I.1.

(d) “Unprivileged” or “unlawful” combatants
Not everyone taking up arms in an international armed conflict necessarily
qualifies for the privilege of combatancy. Members of the armed forces may
lose that privilege for failing to distinguish themselves from the civilian

132 N. Melzer, Interpretive Guidance, op. cit. (note 129), p. 25.
133 AP I, Art. 43(2).

84 CHAPTER 3

population. Others – mercenaries,134 private contractors,135 civilian intelli-
gence agents, organized criminals, other civilians – may directly participate
in hostilities without being entitled to the privilege in the first place. Civil-
ians directly participating in hostilities and others supporting the enemy’s
war effort without being entitled to the privilege of combatancy are some-
times sweepingly described as “unprivileged” or “unlawful” combatants and
wrongly said to fall outside the categories of person protected by the 1949
Geneva Conventions.

➝ For more information on the concepts of “unprivileged” or “un-
lawful” combatants in the context of detention, see Chapter 5.I.1.b.

For the purposes of the conduct of hostilities, the composite terms “unpriv-
ileged combatant” and “unlawful combatant” are often used far too sweep-
ingly, generally in order to imply that the persons concerned do not have
the privilege of combatancy and are not protected against direct attack. It
must be emphasized, however, that neither “unprivileged” nor “unlawful”
combatant is a term used in IHL, and that neither entails any status or
loss of protection in derogation of the categories and rules already foreseen
in IHL. This observation is equally valid for situations of international and
non-international armed conflict. As a matter of law, therefore, a person’s
loss of protection against direct attack can never be the result of his or her
informal categorization as an “unprivileged” or “unlawful” combatant, but
must always be based on his or her membership in the armed forces of a
belligerent party (combatant status – see Section I.1.c above) or, in the case
of civilians, his or her direct participation in hostilities (direct participation
in hostilities – see Section I.4 below) within the meaning of IHL. While the
term “unprivileged combatant” arguably may be used in a purely descriptive
manner for members of the armed forces who have lost their entitlement to
the privilege of combatancy, it should never be used to refer to persons who
are protected against direct attack, or who may only lose such protection on
a temporary basis, such as civilians directly participating in hostilities and
others supporting the enemy without becoming part of its fighting forces. As
to the notion of “unlawful combatant,” the fact that IHL limits the “right”
to directly participate in hostilities to privileged combatants does not neces-
sarily imply a prohibition of “unprivileged combatancy” as a matter of IHL.
Strictly speaking, IHL does not prohibit anyone from taking up arms in a
situation of armed conflict; it simply requires that all those doing so comply
with its rules on the conduct of hostilities.

134 AP I, Art. 47; CIHL, Rule 109.
135 GC III, Art. 4(4) and (5).

THE CONDUCT OF HOSTILITIES 85

Given that the use of terms such as “unprivileged combatant” or “unlawful
combatant” in the context of the conduct of hostilities is fraught with consid-
erable risk of abuse or misunderstanding, the term “combatant” will be used
below in its technical meaning only, namely as referring to persons entitled
to the privilege of combatancy in situations of international armed conflict.

2. Definition of “civilians” and “civilian population”
In IHL, the civilian population is negatively defined as comprising all
persons who are neither members of the armed forces of a party to the
conflict nor participants in a levée en masse.136 Thus, the definition also
includes civilians accompanying the armed forces without being incorpo-
rated therein, such as war correspondents and, as a general rule, private con-
tractors and civilian intelligence or law enforcement personnel, even if some
of them may be entitled to prisoner-of-war status upon capture.137 On the
other hand, as has been shown, all armed forces, groups and units showing
a sufficient degree of military organization and operating de facto on behalf
of and with the agreement of a party to the conflict must be regarded as part
of its armed forces and therefore do not qualify as civilians, irrespective of
their entitlement to prisoner-of-war status or the combatant’s privilege, and
regardless of their denomination in domestic law.138 If there is any doubt
about a person’s civilian status, that person must be considered a civilian.139

3. Specific prohibitions

(a) Direct attacks
The most direct emanation of the principle of distinction is, of course, the pro-
hibition of direct attacks against civilians.140 It is important to note that, in IHL,
the word “attacks” refers not only to offensive operations, but includes all “acts of
violence against the adversary, whether in offence or in defence.”141

(b) Acts of terror
While it is clear that any military operation affecting civilians is likely to
induce a certain amount of fear and anxiety among the civilian population,
IHL prohibits acts or threats of violence the primary purpose of which is to
spread terror among the civilian population.142

136 AP I, Art. 50(1) and (2); CIHL, Rule 5.
137 See Chapter 5.I.2.
138 See Section I.1.a.
139 AP I, Art. 50(1).
140 AP I, Art 51(2); CIHL, Rule 1.
141 AP I, Art. 49(1).
142 AP I, Art. 51(2); CIHL, Rule 2.

86 CHAPTER 3

(c) Indiscriminate attacks
Apart from direct attacks against civilians, IHL also prohibits indiscriminate
attacks. These are attacks which are of a nature to strike military objectives
and civilians and civilian objects without distinction, either because they
are not or cannot be directed at a specific military objective or because their
effects cannot be limited as required by IHL.143 Particularly devastating exam-
ples of indiscriminate attacks are the so-called “carpet bombing” campaigns
of World War II, in which entire areas containing both military objectives and
civilians and civilian objects were treated as a single military objective and
attacked without distinction. Another example of indiscriminate attacks are
those which may be expected to cause incidental harm to civilians or civilian
objects that would be excessive in relation to the concrete and direct military
advantage anticipated.144

(d) Human shields
IHL also prohibits belligerent parties from using civilians as “human shields.”
Accordingly, it is prohibited to use the presence or direct the movement of
the civilian population or individual civilians in order to attempt to shield
military objectives from attack, or to shield, favour or impede military opera-
tions.145 However, even unlawful recourse to human shields by the defending
party does not release the attacking party from its obligations under IHL,
especially the principles of proportionality and precaution in attack.146

(e) Non-reciprocity and prohibition of attacks by way of reprisal
All of the above-mentioned prohibitions are non-reciprocal in that their
violation by the enemy does not release belligerent parties from their own
obligations with respect to the civilian population.147 In particular, it is pro-
hibited to attack civilians by way of reprisal.148

4. Civilian participation in hostilities

(a) Basic rule
In situations of armed conflict, civilians are entitled to protection against
direct attack “unless and for such time as they take a direct part in hos-
tilities.”149 In other words, for the duration of their direct participation in
hostilities, civilians may be directly attacked as if they were combatants.
Despite the serious legal consequences involved, IHL provides no definition

143 AP I, Art. 51(4) and (5); CIHL, Rules 11–13.
144 AP I, Art. 51(5)(b). See also Section III.1. on the principle of proportionality.
145 AP I, Art. 51(7); CIHL, Rule 97.
146 See Section III.
147 AP I, Art. 51(8); CIHL, Rule 140.
148 GC IV, Arts 28 and 33; AP I, Art. 51(6); CIHL, Rules 145 and 146.
149 AP I, Art. 51(3); CIHL, Rule 6.

THE CONDUCT OF HOSTILITIES 87

of conduct that amounts to direct participation in hostilities, nor can a clear
interpretation of the concept be derived from State practice or international
jurisprudence or from legal and military doctrine. The ICRC therefore
conducted an informal expert process from 2003 to 2009, which resulted in
the publication of its Interpretive Guidance on the Notion of Direct Partici-
pation in Hostilities under International Humanitarian Law.

➝ See Textbox 5, Chapter 3.I.4.c. below: ICRC process to clarify the
concept of “ direct participation in hostilities.”

(b) Meaning of “direct participation in hostilities”
In essence, the concept of direct participation in hostilities comprises two
basic components: that of “hostilities” and that of “direct participation”
therein. While the concept of “hostilities” refers to the collective recourse
by belligerent parties to means and methods of warfare, “participation” in
hostilities refers to the individual involvement of a person in these hostili-
ties. Depending on the quality and degree of such involvement, individual
participation in hostilities may be described as “direct” or “indirect.” While
direct participation refers to specific hostile acts carried out as part of the
conduct of hostilities between parties to an armed conflict and leads to loss
of protection against direct attack, indirect participation may contribute to
the general war effort, but does not directly harm the enemy and therefore
does not entail loss of protection against direct attacks.

In order to qualify as direct participation in hostilities, a specific act must meet
all the following requirements: first, the harm likely to result from the act must
be either specifically military in nature or involve death, injury or destruction
(threshold of harm); second, there must be a direct causal relation between the
act and the expected harm (direct causation); third, the act must be an integral
part of the hostilities occurring between parties to an armed conflict and must,
therefore, aim to support one belligerent party to the detriment of another
(belligerent nexus). In short, the concept of direct participation in hostilities
should be interpreted as referring to acts designed to support a belligerent party
by directly harming its enemy, either by directly causing military harm or by
directly inflicting death, injury or destruction on persons or objects protected
against direct attack. These criteria permit a reliable distinction to be made
between activities amounting to direct participation in hostilities and activities
that, although occurring in the context of an armed conflict, are not part of the
conduct of hostilities between belligerent parties and therefore do not entail
loss of protection against direct attack within the meaning of IHL.150

150 See N. Melzer, Interpretive Guidance, op. cit. (note 129). For an expert critique of the
ICRC’s interpretive guidance and the organization’s official response, see “Forum on

88 CHAPTER 3

Finally, loss of protection against direct attack (due to direct participation in
hostilities) must not be confused with loss of the special protection afforded
to medical and religious personnel, and to civil defence personnel (due to
the commission of acts harmful to the enemy).

➝ On the criteria for loss of the special protection afforded to med-
ical and religious personnel, see Chapter 4, Sections II.2.a. and
III.1.c. below.

➝ On the criteria for loss of the special protection afforded to civil
defence personnel, see Section II.4. below.

(c) Distinction from “unprivileged combatancy”
The legal term “civilian direct participation in hostilities” should not be con-
fused with the controversial notion of “unprivileged combatancy,” which has no
meaning under IHL. As far as the categories of person recognized under IHL
are concerned, both civilians directly participating in hostilities and members
of the armed forces not entitled to the combatant privilege may be lawfully
attacked, and both may also be prosecuted for lawful acts of war that constitute
an offence under the applicable national law. However, the decisive difference
between these two categories of person is that civilians directly participate in
hostilities on a merely spontaneous, sporadic or unorganized basis, whereas
“unprivileged” members of the armed forces do so on an organized and con-
tinuous basis. Therefore, civilians directly participating in hostilities lose their
protection against direct attack only for the duration of each specific hostile act,
whereas, in principle, both privileged and unprivileged members of the armed
forces may be directly attacked for the entire duration of their membership,
with the sole exception of those who are hors de combat.

➝ On “unprivileged combatancy,” see Section I.1.d. above and Chap-
ter 5.I.1.b.

‘Direct Participation in Hostilities’,” New York University Journal of International Law
and Politics, Vol. 42, No. 3, Spring 2010, pp. 769–916.

THE CONDUCT OF HOSTILITIES 89

(d) Interplay between the conduct of hostilities and the law enforcement
paradigms

The fact that civilian support for the enemy does not amount to direct partici-
pation in hostilities does not mean that such support is necessarily lawful, or
that no measures can be taken to prevent, suppress or punish such support.
Given that the civilians concerned remain protected against direct attack, any
use of force against them must comply with the more restrictive rules of the
law enforcement paradigm. This distinction is crucial because, contrary to
the more permissive rules on the conduct of hostilities, the law enforcement
paradigm allows the use of lethal force only in order to protect human life

Textbox 5: ICRC process to clarify the concept of
“direct participation in hostilities”

In 2003, the ICRC initiated an informal expert process with the aim of clarifying IHL
as it relates to the concept of direct participation in hostilities. Five expert meetings
were held in The Hague and in Geneva between 2003 and 2008. Each meeting brought
together 40 to 50 legal experts from military, governmental and academic circles, and
from international and non-governmental organizations, all of whom attended in their
personal capacity. The process focused on interpreting the concept of direct partici pation
in hostilities for the purposes of the conduct of hostilities only and did not address the
legal regime applicable in the event of capture or detention of persons who have directly
participated in hostilities. Also, the process examined the above-mentioned questions
exclusively from the point of view of IHL; its conclusions remain without prejudice to
an analysis of the questions raised by civilian participation in hostilities under other
applicable branches of international law, such as human rights law or the UN Charter
(jus ad bellum). Based on the discussions held and the research conducted in the course
of the expert process, the ICRC published its Interpretive Guidance on the Notion of Direct
Participation in Hostilities under International Humanitarian Law (2009). This document does
not necessarily reflect the unanimous or majority opinion of the participating experts on the
questions addressed; instead, it provides the ICRC’s official recommendations as to how IHL
relating to the concept of direct participation in hostilities should be interpreted in the light
of the circumstances prevailing in contemporary armed conflicts. It does not endeavour to
change or amend existing IHL rules; it attempts instead to ensure their coherent interpretation
in line with the core principles underlying IHL as a whole. While the Interpretive Guidance is
not legally binding, the ICRC has expressed the hope that the careful and balanced analysis
underlying its recommendations will be equally persuasive to States, non-State actors, mili-
tary and humanitarian personnel, judicial officials and academics.

• See Nils Melzer, Interpretive Guidance on the Notion of Direct Participa-
tion in Hostilities under International Humanitarian Law, ICRC, Geneva,
2009, 85 pp.

90 CHAPTER 3

from an unlawful attack, and only as a last resort when other available means
remain ineffective or without any promise of achieving the intended result.
Moreover, the conduct of hostilities paradigm tolerates more incidental harm
than the law enforcement paradigm. The two paradigms also contain different
requirements in terms of operational planning and of the duty to investi-
gate violations. In January 2012, the ICRC organized an expert meeting to
clarify this issue, which will likely be further explored in the years to come.

➝ For more information on the applicable paradigm, see Textbox 2:
ICRC expert meeting on IHL and the use of force in armed
conflicts (Chapter 1.III.2.).

➝ On fundamental guarantees and security measures, see Chapter
6.I.3.

151

151 All ICRC documents available at: www.icrc.org

To go further (Protection of the civilian population)151

• ICRC e-learning modules, Protected persons and objects. Available at:
http://www.icrcproject.org/elearning/en/ihl/M6/index.html

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 9: Conduct of Hostilities, pp. 250–280.

• Charles H.B. Garraway, “Combatants: Substance or semantics?,” in Michael
Schmitt and Jelena Pejic (eds), International Law and Armed Conflict: Exploring
the Faultlines, Essays in Honour of Yoram Dinstein, Martinus Nijhoff Publishers,
Leiden/Boston, 2007, pp. 317–335.

• Knut Dörmann, “The legal situation of ‘unlawful/unprivileged combatants’,”
IRRC, Vol. 85, No. 849, March 2003, pp. 45–74.

• Stéphanie Bouchié de Belle, “Chained to cannons or wearing targets on their
T-shirts: Human shields in international humanitarian law,” IRRC, Vol. 90,
No. 872, December 2008, pp. 883–906.

• Nils Melzer, Interpretive Guidance on the Notion of Direct Participation in Hos-
tilities under International Humanitarian Law, ICRC, Geneva, 2009, 85 pp.

• ICRC, Professional Standards for Protection Work Carried Out by Humani-
tarian and Human Rights Actors in Armed Conflict and Other Situations of
Violence, ICRC, Geneva, 2013, 115 pp.

THE CONDUCT OF HOSTILITIES 91

II. PROTECTION OF CIVILIAN OBJECTS,
AND OF CERTAIN AREAS AND INSTITUTIONS

1. Military objectives and civilian objects
IHL provides that attacks must be strictly limited to military objectives and
that civilian objects may not be the object of attacks or reprisals.152 Civilian
objects are negatively defined as all objects that are not military objectives.153
Military objectives, in turn, are defined as “those objects which by their
nature, location, purpose or use make an effective contribution to military
action and whose total or partial destruction, capture or neutralization, in
the circumstances ruling at the time, offers a definite military advantage.”154
If there is any doubt whether an object normally used for civilian purposes,

152 GC IV, Art. 33; AP I, Art. 52(1) and (2); CIHL, Rule 7.
153 AP I, Art. 52(1); CIHL, Rule 9.
154 AP I, Art. 52(2); CIHL, Rule 8.

How Does Law Protect in War?

• Case No. 20, The Issue of Mercenaries

• Case No. 126, Israel, Military Prosecutor v. Kassem and Others

• Case No. 164, Sudan, Report of the UN Commission of Enquiry on Darfur

Old city of Aleppo, Syria, 2013. Destroyed houses just metres from the frontline.

H
. V

an
es

ia
n/

IC
R

C

92 CHAPTER 3

such as a place of worship, a house or other dwelling or a school, is being
used to make an effective contribution to military action, it is presumed not
to be so used.155

(a) General meaning of “military objective”
In order to qualify as a military objective, an object must meet two cri teria.
First, it must contribute effectively to the adversary’s military action (as
opposed to mere policy objectives or the war-sustaining capabilities of the
enemy), and it has to do so by its “nature” (e.g. the intrinsically military
characteristics of weaponry), “location” (e.g. a physical obstacle impeding
military operations), “purpose” (e.g. the intended future use of an ammu-
nition factory under construction), or current “use” (e.g. a building being
used as a sniper position). Second, an object making an effective contribu-
tion to the enemy’s military action can qualify as a military objective only
if its destruction, capture or neutralization also offers the attacker a definite
military advantage. It follows from the word “definite” that the advantage
must be concrete and perceptible, and not merely hypothetical or specula-
tive. The definition also stipulates that targeting decisions cannot be based
on outdated assessments of past or speculations as to future developments;
instead, any attack being contemplated must offer a definite military advan-
tage “in the circumstances ruling at the time.” Thus, military objectives
defined as such because of their use regain civilian status as soon as they no
longer make an effective contribution to the enemy’s military action or an
attack against them no longer offers a definite military advantage. As long
as reference is made to a distinct tactical military operation rather than an
entire military campaign, however, it is sufficient if such military advantage
may be expected to result from the attack considered as a whole, and not
necessarily from each act of violence that is part of that attack. While the
precise meaning of the terms “effective contribution” and “definite advan-
tage” depend heavily on contextual factors, it is clear that they both aim to
avoid excessively permissive targeting criteria in operational practice.

(b) Dual-use objects
In practice, almost any civilian object can be used for military purposes and
can therefore be a military objective for the duration of such use. Objects
simultaneously used for civilian and military purposes are particularly prob-
lematic. Typical examples of objects that might become “dual-use” objects
are logistical infrastructure (roads, bridges, railways, ports and airports),
power plants, and electricity and communication networks. To the extent that
a specific dual-use object makes an “effective contribution” to the enemy’s
military action and its destruction, neutralization or capture offers a defi-
nite military advantage, it qualifies as a military objective regardless of its

155 AP I, Art. 52(3).

THE CONDUCT OF HOSTILITIES 93

simultaneous civilian use. The negative impact that an attack against a dual-
use object is expected to have on the civilian population is not relevant for
its categorization as a military objective, but must be taken into account in
the proportionality assessment.156 Accordingly, an attack against a dual-use
object qualifying as a military objective would be unlawful if it may be
expected to cause incidental civilian harm that would be excessive in rela-
tion to the concrete and direct military advantage anticipated.157

2. Specially protected objects

(a) Cultural property
The conduct of hostilities has often resulted in the destruction of irreplace-
able cultural property, particularly during the large-scale aerial bombard-
ments of World War II. Recognizing the significance of this loss to the
cultural heritage of humanity, the international community adopted the
1954 Hague Convention on Cultural Property and its two Protocols of 1954
and 1999. Additional Protocols I and II also contain provisions protect-
ing cultural property.158 In IHL, cultural property is defined as comprising
essentially any secular or religious movable or immovable property of great
importance to the cultural heritage of all people, such as monuments of
architecture or history, archaeological sites, works of art, books, museums,
and libraries and other buildings containing cultural property.159

In order to facilitate its identification, cultural property protected under
IHL should be marked with the emblem of the 1954 Convention, a down-
ward pointed blue square shield on a white background.160 Such marking is
purely indicative in nature and is not a precondition for the special protec-
tion afforded by IHL.161 Belligerent parties must safeguard their own cultural
property against the foreseeable effects of an armed conflict,162 and they
must respect all cultural property, whether their own or that situated in the
territory of other States. In particular, they may not direct any act of hos-
tility against cultural property, and must refrain from using such property
for purposes likely to expose it to destruction or damage in the event of an
armed conflict.163 These obligations can be derogated from only in cases of
imperative military necessity and if there is no feasible alternative available

156 The proportionality assessment is examined in Section III.
157 See Section III.2.b.
158 AP I, Arts 38, 53 and 85; AP II, Art. 17.
159 Hague Convention on Cultural Property, Art. 1.
160 Hague Convention on Cultural Property, Arts 16 and 17.
161 Hague Convention on Cultural Property, Arts 2 and 4.
162 Hague Convention on Cultural Property, Art. 3.
163 Hague Convention on Cultural Property, Art. 4(1).

94 CHAPTER 3

to obtain a similar military advantage.164 In no case, however, may cultural
property be attacked unless it has, by its function, been turned into a mil-
itary objective. Moreover, any such attack must be ordered by a command-
ing officer and, whenever circumstances permit, preceded by an effective
advance warning.165

After the limited success of this system of “special protection” under the
Hague Convention on Cultural Property, a second Protocol was adopted
in 1999 that introduced a new system of “enhanced protection” for cultural
property that: (1) represents cultural heritage of the greatest importance to
humanity; (2) enjoys the highest level of protection in domestic law; (3) is
not used for military purposes or to shield military sites and has been formally
declared not to be intended for such use.166 Belligerent parties controlling prop-
erty granted enhanced protection must not use such property or its immediate
surroundings in support of military action under any circumstances.167 Even
when such property has, by virtue of its use, become a military objective, it
may not be attacked unless that is the only feasible means of terminating
such use and unless precautions are taken to minimize damage to the prop-
erty. Effective advance warning must be given, circumstances permitting.168
The Hague Convention on Cultural Property and its Second Protocol also
require States to criminalize in their domestic law a number of violations of
IHL relating to the protection of cultural property.169 Today, the protection
of cultural property is regarded as part of customary IHL.170

(b) Works and installations containing dangerous forces
Certain installations, namely dams, dykes and nuclear power stations, are
specially protected from attack because their partial or total destruction
would likely have catastrophic humanitarian consequences for the surround-
ing civilian population and objects. As long as such works and installations
constitute civilian objects they are, of course, protected against direct attack.
However, even dams, dykes and nuclear power stations that qualify as mil-
itary objectives, as well as other military objectives located in their vicinity,
must not be attacked if such attack can cause the release of dangerous forces
and consequent severe losses among the civilian population.171

164 Hague Convention on Cultural Property, Art. 4(2); AP I, Art. 57(3).
165 Hague Convention on Cultural Property, Art. 4, and its Second Protocol, Art. 6.
166 Second Protocol to the Hague Convention on Cultural Property, Art. 10.
167 Second Protocol to the Hague Convention on Cultural Property, Art. 12.
168 Second Protocol to the Hague Convention on Cultural Property, Art. 13.
169 Hague Convention on Cultural Property, Art. 28, and its Second Protocol, Art. 15.
170 CIHL, Rules 38–41.
171 AP I, Art. 56(1). See also CIHL, Rule 42.

THE CONDUCT OF HOSTILITIES 95

This special protection against attack ceases only if the military objective in
question is used in regular, significant and direct support of military opera-
tions and if such attack is the only feasible way to terminate such support.172
In no case may such works, installations or military objectives be made
the object of reprisals.173 If special protection ceases and any such works,
installations or neighbouring military objectives are attacked, in addition to
the precautionary measures required by the general rules on the conduct of
hostilities, all practical precautions must be taken to avoid the release of the
dangerous forces.174

In order to facilitate their identification, such objects should be marked with
a special sign consisting of a group of three bright orange circles placed on
the same axis.175 Such marking is purely indicative in nature and is not a
precondition for the special protection afforded by IHL.176

(c) Objects indispensable to the survival of the civilian population
IHL prohibits the starvation of civilians as a method of warfare.177 It is there-
fore prohibited to attack, destroy, remove or render useless objects indispens-
able to the survival of the civilian population (e.g. foodstuffs, agricultural
areas, crops, livestock, drinking water and irrigation systems) for the specific
purpose of denying them for their sustenance value to the civilian popula-
tion or to the adverse party, whether in order to starve out civilians, to cause
them to move away, or for any other motive.178

These prohibitions do not apply where such objects are used exclusively as
sustenance for the opposing armed forces, or otherwise in direct support
of military action,179 unless action taken against them may be expected to
starve the civilian population or force its movement. In no case may objects
indispensable to the survival of the civilian population be made the object
of reprisals.180 A belligerent party may derogate from these prohibitions
only where required by imperative military necessity for the defence of its
national territory against invasion, and only within territory under its own
control.181

172 AP I, Art. 56(2).
173 AP I, Art. 56(4); CIHL, Rule 147.
174 AP I, Art. 56(3).
175 AP I, Annex I, Art. 17.
176 AP I, Art. 56(7).
177 AP I, Art. 54(1); CIHL, Rule 53.
178 AP I, Art. 54(2); CIHL, Rule 54.
179 AP I, Art. 54(3).
180 AP I, Art. 54(4); CIHL, Rule 147.
181 AP I, Art. 54(5).

96 CHAPTER 3

The prohibition of starvation as a method of warfare does not prohibit sieges,
naval blockades and embargoes that cause starvation as long as the purpose
is to achieve a military objective and not to starve a civilian population. At
the same time, the prohibition of starvation implies that the besieging party
must either allow the inhabitants to leave the area in question or permit the
free passage of humanitarian relief supplies.

(d) Natural environment
From a more general and long-term perspective, no civilian population can
be adequately protected against the effects of war if the natural environment
it depends on for its sustenance is destroyed, poisoned or severely damaged
by military operations. Article 35 of Additional Protocol I therefore includes
protection of the natural environment as a basic rule of IHL. As a general
rule, the natural environment benefits from the protection afforded to
civilian objects unless it meets all the constitutive requirements of a military
objective.182 In addition, IHL obliges belligerent parties to protect the natural
environment against “widespread, long-term and severe damage,” and
prohibits the use of methods or means of warfare that are intended or may
be expected to cause such damage to the natural environment and thereby
to prejudice the health or survival of the population.183 IHL also prohibits
attacks against the natural environment by way of reprisals.184

While environmental damage that does not reach the threshold of “wide-
spread, long-term and severe damage” remains subject to the general rules of
distinction, proportionality and precaution, the prohibition of “widespread,
long-term and severe damage” is absolute. In other words, if military oper-
ations are intended or may be expected to cause environmental damage that
reaches that threshold, they are prohibited irrespective of whether the affected
part of the environment qualifies as a military objective or, if not, whether the
incidental harm inflicted on it would be excessive in relation to the anticipated
military advantage. This is why the prohibition has such a high threshold. These
three elements – “widespread,” “long-term” and “severe” – are understood to
be cumulative, and “long-term” is understood to refer to decades.185 However,
as it may be difficult to estimate in advance the exact scope and duration of
environmentally damaging military operations, belligerents should endeavour
to limit environmental damage as far as possible even when it is not expected
to reach the threshold of “widespread, long-term and severe damage.”

182 CIHL, Rule 43.
183 AP I, Arts 35(3) and 55(1); CIHL, Rules 44 and 45.
184 AP I, Art. 55(2); CIHL, Rule 147.
185 Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Protocols,

op. cit. (note 6), paras 1452 and 1457.

THE CONDUCT OF HOSTILITIES 97

The 1976 ENMOD Convention takes a slightly different approach.
It prohibits the “military or any other hostile use of environmental
modification techniques having widespread, long-lasting or severe effects
as the means of destruction, damage or injury.”186 Although the terms
used in the ENMOD Convention (“widespread, long-lasting or severe”)
are similar to those used in Additional Protocol I (“widespread, long-term
and severe”), the use of the word “or” indicates that the ENMOD thresh-
old is not cumulative. Moreover, the “Understandings” annexed to the
ENMOD Convention define the term “long- lasting” as “lasting for a period
of months, or approximately a season.” Overall, therefore, the threshold for
prohibited conduct is significantly lower for the deliberate manipulation
of the environment for hostile purposes (i.e. the use of the environment
as a means or method of warfare) than for the direct or incidental infliction
of damage on the natural environment (i.e. the use of weapons against the
environment).187

3. Non-defended localities and demilitarized zones
In addition to the safety and neutralized zones established in connection
with the protection of the wounded, sick and shipwrecked,188 IHL also pro-
vides for the identification/declaration of non-defended localities and the
establishment of demilitarized zones, both of which are specifically intended
to protect the civilian population from the effects of war.

(a) Non-defended localities
A belligerent party can unilaterally declare as a “non-defended locality”
any inhabited place near or in a combat zone. Such non-defended locali-
ties must fulfil all the following conditions: most notably, all combatants
and mobile military equipment must have been evacuated; any remaining
military installations must not be used for hostile purposes; and both the
authorities and the population must refrain from committing acts of hos-
tility or otherwise supporting military operations. If these conditions are
met, the locality in question may be occupied by the enemy, but it may not be
attacked by any means whatsoever, and its inhabitants may not be harmed.
A locality ceasing to fulfil any one of these conditions loses its status as a
non-defended locality but continues to enjoy the protection provided under
the general provisions of IHL.189

186 ENMOD Convention, Art. 1.
187 Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Proto-

cols, op. cit. (note 6), paras 1452 in particular and 1448–1457 in general.
188 See Chapter 4.IV.
189 AP I, Art. 59; CIHL, Rule 37.

98 CHAPTER 3

(b) Demilitarized zones
States can at any time agree to confer the status of “demilitarized zone” on
any given area. Examples of such demilitarized zones include Antarctica
and the Sinai. Such agreements may be concluded in peacetime, as well as
after the outbreak of hostilities, and should define both the limits of the
demilitarized zone and any methods of supervision. Demilitarized zones
are similar to non-defended localities in that their status normally implies
that all combatants and mobile military equipment have been evacuated, that
no hostile use is made of remaining military installations, that no acts of
hostility are committed by the authorities or by the population, and that any
activity linked to the military effort has ceased. In the event of an armed
conflict, the belligerent parties may not use such demilitarized zones for pur-
poses related to the conduct of military operations, or unilaterally revoke
their status as demilitarized zones. Should the preconditions for “demilitar-
ized” status be breached by one belligerent party, the zone loses its status as
a “demilitarized” zone but continues to enjoy the protection provided under
the general provisions of IHL.190

4. Civil defence organizations
Since World War II, hostilities have steadily shifted from distinct battlefields
into civilian population centres, and many States have therefore established
civil defence organizations. In IHL, “civil defence” denotes the performance
of certain humanitarian tasks intended to protect the civilian population
against the dangers, and to help it to recover from the immediate effects, of
hostilities or disasters, and to provide the conditions necessary for its survival.
These tasks are: (i) warning; (ii) evacuation; (iii) management of shelters; (iv)
management of blackout measures; (v) rescue; (vi) medical services, includ-
ing first aid, and religious assistance; (vii) fire-fighting; (viii) detection and
marking of danger areas; (ix) decontamination and similar protective meas-
ures; (x) provision of emergency accommodation and supplies; (xi) emer-
gency assistance in the restoration and maintenance of order in distressed
areas; (xii) emergency repair of indispensable public utilities; (xiii) emergency
disposal of the dead; (xiv) assistance in the preservation of objects essential for
survival; (xv) complementary activities necessary to carry out any of the tasks
mentioned above, including, but not limited to, planning and organization.191

Civil defence organizations, the personnel assigned exclusively to the per-
formance of civil defence tasks, and civilians volunteering to perform such
tasks at the behest of the authorities must be respected and protected and
must be allowed to perform their tasks except in case of imperative military

190 AP I, Art. 60; CIHL, Rule 36.
191 AP I, Art. 61(a).

THE CONDUCT OF HOSTILITIES 99

necessity. Objects used for civil defence purposes may not be destroyed or
diverted from their proper use except by the belligerent party to which they
belong.192 In occupied territories, civil defence organizations are subject to
the security regime established by the occupying power, but are also entitled
to its support in the performance of their tasks, and are protected against
any interference, coercion, requisition or diversion that may jeopardize their
mission or prove harmful to the civilian population.193

With the consent and under the control of the territorial State or occupying
power, civil defence tasks may also be performed by civil defence organiza-
tions of neutral or other non-belligerent States. Such activities do not con-
stitute interference in the conflict, but should always be performed with due
regard for the security interests of all belligerent parties.194

Civil defence organizations, their personnel, buildings and materiel, should
be marked by the international distinctive sign of civil defence (equilateral
blue triangle on an orange ground).195 They lose their special protection if
they commit or are used to commit, outside their proper tasks, acts harmful
to the enemy, although civilian members of a civil defence organization
retain their general protection against direct attack unless and for such time
as they directly participate in hostilities. The special protection granted to
civil defence personnel and objects may cease only after a warning setting
a reasonable time limit has gone unheeded. Additional Protocol  I stipu-
lates that the following are not to be considered “harmful” to the enemy:
the fact that civilian civil defence organizations are controlled by military
authorities, organized along military lines, cooperate with military person-
nel or have military personnel attached to them; that their tasks incidentally
benefit military victims; or that civil defence personnel bear light individual
weapons for the purpose of maintaining order or for self-defence.196 Members
of the armed forces permanently and exclusively assigned to civil defence
organizations and tasks within the national territory of their party must also
be respected and protected, provided that they are clearly distinguishable
from the other members of the armed forces, are equipped only with light
individual weapons for maintaining order or self-defence, do not participate
directly in hostilities, do not perform any other military duties and do not
commit, outside their civil defence tasks, acts harmful to the adversary.197

192 AP I, Art. 62.
193 AP I, Art. 63.
194 AP I, Art. 64.
195 AP I, Art. 66.
196 AP I, Art. 65.
197 AP I, Art. 67.

100 CHAPTER 3

198

III. PROPORTIONALITY, PRECAUTIONS
AND PRESUMPTIONS

The principle of distinction also entails a duty to prevent erroneous target-
ing and to avoid or, in any event, minimize the infliction of incidental death,
injury and destruction in respect of persons and objects protected against
direct attack. Accordingly, IHL requires that, “[i]n the conduct of military
operations, constant care shall be taken to spare the civilian population,

198 All ICRC documents available at: www.icrc.org

To go further (Protection of civilian objects)198

• Sylvain Vité, “The interrelation of the law of occupation and economic, social
and cultural rights: The examples of food, health and property,” IRRC, Vol. 90,
No. 871, September 2008, pp. 629–651.

• “Environment,” IRRC, Vol. 92, No. 879, September 2010.

• United Nations Environment Program (UNEP), Protecting the Environment
During Armed Conflict: An Inventory and Analysis of International Law, 2009.
Available at: http://postconflict.unep.ch/publications/int_law.pdf

• ICRC Advisory Service on International Humanitarian Law, Protection of
Cultural Property in the Event of Armed Conflict, Report prepared and edited
by Marıa Teresa Dutli, in cooperation with Joanna Bourke Martignoni and
Julie Gaudreau, ICRC, Geneva, 2002. Available at: https://www.icrc.org/en/
download/file/1041/cutural-property-report-icrc_002_0805.pdf

• ICRC Advisory Service on International Humanitarian Law, Practical Advice
for the Protection of Cultural Property in the Event of Armed Conflict, ICRC,
Geneva, 2002. Available at: https://www.icrc.org/en/download/file/1040/
advice-protection-cultural-property-armed-conflict.pdf

How Does Law Protect in War?

• Case No. 38, The Environment and International Humanitarian Law

• Case No. 42, Water and Armed Conflicts

• Case No. 163, Eritrea/Ethiopia, Awards on Military Objectives

• Case No. 219, ICTY, The Prosecutor v. Strugar [Part B., paras 229–233 and 298–329]

• Case No. 226, Federal Republic of Yugoslavia, NATO Intervention

• Case No. 252, Afghanistan, Destruction of the Bamiyan Buddhas

THE CONDUCT OF HOSTILITIES 101

civilians and civilian objects.”199 This applies both to the attacking party to
the conflict, which must do everything feasible to avoid erroneous targeting
or incidental harm as a result of its own operations (precautions in attack),200
and to the attacked party, which must take all necessary measures to protect
the civilian population under its control from the effects of attacks carried out
by the enemy (precautions against the effects of attack).201 When a lawful target
is attacked and the infliction of incidental civilian harm cannot be avoided,
the permissibility of the attack is subject to the principle of proportionality.

1. Proportionality
The principle of proportionality prohibits attacks “which may be expected
to cause incidental loss of civilian life, injury to civilians, damage to civil-
ian objects, or a combination thereof, which would be excessive in relation
to the concrete and direct military advantage anticipated.”202 Given that
direct attacks against civilians and civilian objects are already prohibited,
the proportionality evaluation is relevant only when attacks are directed
against lawful targets.

The key term to be examined in the proportionality equation is “excessive.”
While the requirement of proportionality is absolute, the standard of
“excessiveness” is relative. IHL does not establish an objective threshold
above which the infliction of incidental harm would always be excessive. In
principle, targets with a comparatively high military value (high-value
targets) will justify greater incidental harm than targets with a compara-
tively low military value (low-value targets).

Although the proportionality assessment necessarily contains subjective elem-
ents, a certain degree of objective guidance can be derived from the termin-
ology used in the treaty text. Thus, the infliction of incidental harm on protected
persons or objects can only be justified by advantages of a “military” nature,
and not by political, economic or other non-military benefits. Moreover, the
anticipated military advantage must be “concrete” and “direct” and not of a
merely hypothetical, speculative or indirect nature. It must also be expected
to result from a specific attack or operation, and not from a military cam-
paign as a whole. Therefore, the overarching intention of “winning the war”
cannot, as such, serve to justify the infliction of incidental harm on persons
and objects protected against direct attack.

199 AP I, Art. 57(1); CIHL, Rule 15.
200 AP I, Art. 57; CIHL, Rules 15–21.
201 AP I, Art. 58; CIHL, Rules 22–24.
202 AP I, Art. 51(5)(b); CIHL, Rule 14.

102 CHAPTER 3

When assessing the excessiveness of incidental harm, the foreseeable second-
and third-order effects of an attack must also be taken into account. For
example, attacks against dual-use infrastructure, such as electrical grids or
telecommunication networks, may not only have the immediate effect of
preventing the enemy from using that infrastructure for military purposes
and exposing the civilian population to short-term shortages. They may well
have a crippling effect on the medium- and long-term ability of the civil-
ian authorities and medical services concerned, and of the general civilian
popu lation, to cope with the everyday consequences of the war.

2. Precautions in attack and presumptions in case of doubt
It has to be stressed that, during all phases of an attack, the principle of
precautions in attack must be applied in conjunction with, but also in –
dependently of, the principle of proportionality. In other words, even if the
expected incidental loss of civilian life, injury to civilians and damage to
civilian objects is not excessive in relation to the concrete and direct military
advantage anticipated in the attack, the attacking party must still take all
feasible precautions to choose means and methods of warfare that will avoid
as much incidental harm to civilians as possible.

(a) Precautionary measures before an attack
Those who plan and decide on an attack must do everything feasible to
ascertain that the selected targets are military objectives and that IHL does
not otherwise prohibit attacks against them.203 By default, IHL affords civil-
ian status to all objects failing to positively qualify as military objectives or
persons not members of the armed forces or participants in a levée en masse.
In case of doubt (i.e. in the absence of sufficient evidence to the contrary),
therefore, persons must be presumed to be civilians,204 and objects normally
dedicated to civilian purposes, such as places of worship, houses or schools,
must be presumed to be civilian objects.205

In line with the requirement of proportionality, those who plan or decide
on an attack must also do everything feasible to assess whether that attack
may be expected to cause excessive incidental harm and, if so, refrain from
launching it.206 This includes the duty to take all feasible precautions, includ-
ing in the choice of means and methods, with a view to avoiding, and in any
event to minimizing, incidental harm to civilians and civilian objects.207

203 AP I, Art. 57(2)(a)(i); CIHL, Rule 16.
204 AP I, Art. 50(1).
205 AP I, Art. 52(3).
206 AP I, Art. 57(2)(a)(iii); CIHL, Rules 14 and 18.
207 AP I, Art. 57(2)(a)(ii); CIHL, Rules 15 and 17.

THE CONDUCT OF HOSTILITIES 103

Furthermore, all belligerents have a duty to give effective advance warning
of attacks that may affect the civilian population, unless circumstances do
not permit (e.g. where the success of an attack depends on the effect of sur-
prise).208 Where a choice is possible between several military objectives for
obtaining a similar military advantage, belligerents must direct their attack
against that objective which may be expected to involve the least danger to
civilians and civilian objects. 209

(b) Precautionary measures during an attack
Even after an attack has commenced, it must be canceled or suspended
should it become apparent that the target was mistakenly regarded as a mil-
itary objective (e.g. a poorly marked military truck that turns out to be used
exclusively as an ambulance), that it no longer qualifies as a military object-
ive (e.g. combatants intending to surrender or otherwise hors de combat), or
that the incidental harm which may be expected to result from the ongoing
attack is more significant – or the military advantage less important – than
anticipated, thus rendering the former excessive in comparison to the latter
under the proportionality principle.210

3. Precautions against the effects of attacks
IHL requires not only the attacker, but also the party affected by enemy
attacks to take precautionary measures. Thus, belligerent parties must take
all feasible precautions to protect the civilian population and civilian objects
under their control against the dangers resulting from military operations.211
Most notably, this obligation means that belligerents have a duty, to the
maximum extent feasible, to avoid locating military objectives within or near
densely populated areas212 and to remove the civilian population, individual
civilians and civilian objects under their control from the vicinity of military
objectives.213 In addition, in order to protect the civilian population and
civilian objects under their control, belligerent parties may, for example,
establish shelters, trenches and safe places, distribute information, warnings
and directions to traffic, evacuate civilians, guard civilian property and
mobilize civil defence organizations.214

208 AP I, Art. 57(2)(c); CIHL, Rule 20.
209 AP I, Art. 57(3); CIHL, Rule 21.
210 AP I, Art. 57(2)(b); CIHL, Rule 19.
211 AP I, Art. 58; CIHL, Rule 22.
212 AP I, Art. 58(b); CIHL, Rule 23.
213 AP I, Art. 58(a); CIHL, Rule 24.
214 CIHL, commentary on Rule 22.

104 CHAPTER 3

4. The meaning of “feasibility”
The duty of precaution – both in attack and against the effects of attack –
is limited to taking those precautionary measures that are “feasible.” In
IHL, “(f)easible precautions are those precautions which are practicable
or practically possible taking into account all circumstances ruling at the
time, including humanitarian and military considerations.”215 Therefore,
the feasibility of precautionary measures will depend on a multitude of
factors, such as the available intelligence, the level of territorial control, the
precision of available weapons, the urgency of military action and the costs
and risks associated with additional precautionary measures. For example, a
higher level of precaution can (and must) be expected from a sniper actively
searching for targets of opportunity than from an ambushed infantry
patrol reacting to unexpected fire. Also, while armed forces can and must
be expected not to position anti-aircraft batteries inside civilian population
centres, it would hardly be possible to separate dual-use installations such
as bridges, railway stations, and airports from the civilian surroundings
they are designed to serve. In practice, commanders ultimately will have to
decide on the feasibility of precautions on the basis of their own assess-
ment of the information available to them at the time.

IV. METHODS OF WARFARE

Based on the universal recognition that “the right of the Parties to the conflict
to choose methods or means of warfare is not unlimited,”216 modern IHL has
developed an extensive body of rules prohibiting or regulating the develop-
ment, possession and use of certain weapons (means of warfare) and prohib-
iting or restricting the ways in which such weapons can be used or hostilities
can be conducted (methods of warfare). The distinction between “means” and
“methods” of warfare is important because any weapon (means) can be used
in an unlawful manner (method), whereas the use of weapons that have been
prohibited because of their inherent characteristics is unlawful regardless of
the manner in which they are employed.

Prohibited methods of warfare primarily affecting the civilian population
and civilian objects have already been discussed in Sections I and II above,
and include most notably:

215 Protocol II to the Convention on Certain Conventional Weapons, Art. 3(4), Protocol III to
the Convention on Certain Conventional Weapons, Art. 1(5), and Amended Protocol II to
the Convention on Certain Conventional Weapons, Art. 3(10). See also the French text of
AP I, Art. 57 (“ faire tout ce qui est pratiquement possible”).

216 AP I, Art. 35(1).

THE CONDUCT OF HOSTILITIES 105

• the prohibition of direct attacks against civilians and civilian objects,
cultural property, and installations containing dangerous forces;217

• the prohibition of indiscriminate attacks;218

• the prohibition of the use of civilians or other protected persons
as human shields;219

• the prohibition of acts or threats of violence with the primary
purpose of spreading terror among the civilian population;220

• the prohibition of methods causing widespread, long-term and
severe damage to, or involving the hostile manipulation of, the
natural environment;221

• the prohibition of starvation of civilians as a method of warfare.222

The discussion below therefore focuses on methods of warfare that concern
primarily the relation between combatants, namely the protection of persons

217 AP I, Arts 48, 51(2), 52(1), 53 and 56; Hague Convention on Cultural Property, Art. 4;
CIHL, Rules 1, 7, 38 and 42.

218 AP I, Art. 51(4); CIHL, Rule 11.
219 GC III, Art. 23(1); GC IV, Art. 28; AP I, Art. 51(7); CIHL, Rule 97.
220 AP I, Art. 51(2); CIHL, Rule 2.
221 AP I, Arts 35(3) and 55; CIHL, Rules 43–45.
222 AP I, Art. 54(1).

Mine warning in a village between Gjacova/Djacovica, 2000. More than 500 anti-tank mines have
already been removed from around Junik and Prilep, probably the most heavily mined areas in
Kosovo.

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106 CHAPTER 3

hors de combat, and the prohibitions against the denial of quarter, perfidy/
treachery and misuse of emblems, signs and uniforms.

1. Protection of persons hors de combat
According to a longstanding rule of customary and treaty IHL, it is pro-
hibited to attack persons who are recognized or who, in the circumstances,
should be recognized as being hors de combat. A person is hors de combat
if he or she is in the power of an adverse Party, clearly expresses an inten-
tion to surrender or is incapable of defending himself or herself because of
un consciousness, shipwreck, wounds or sickness, and, in all those cases,
abstains from any hostile act and does not attempt to escape.223

Persons are “in the power” of a belligerent party not only when they are
captured, but also when they are otherwise within the effective physical
or territorial control of that party.224 They can indicate their intention to
surrender in various ways, depending on the circumstances. While in land
warfare the most common methods are to lay down one’s weapons and raise
one’s hands, or to emerge unarmed from cover while raising a white flag,
other methods are used to show the intent to surrender in naval and air
warfare.225 If there is any doubt, a good faith determination must be made
in the light of the circumstances ruling at the time. In the special case of
persons parachuting from an aircraft in distress, attacks are prohibited for
the duration of their descent.226 Once on the ground, they have to be given
an opportunity to surrender, unless it is apparent that they are engaging
in hostile activities.227 Of course, this protection does not apply to airborne
troops whose descent constitutes part of their hostile operations.228

The protection of persons hors de combat ceases as soon as they commit a
hostile act or attempt to escape. For example, a wounded or surrendering
soldier on the battlefield is entitled to no protection if he resumes fighting or
tries to escape capture by the enemy. Once a person hors de combat has been
taken into custody, however, any force used in response to a hostile act or
attempted escape must be proportionate to the danger resulting from such
act or escape and must actually be necessary to prevent it. Accordingly, the
Third Geneva Convention provides that the “use of weapons against prisoners
of war, especially against those who are escaping or attempting to escape, shall

223 AP I, Art. 41(1) and (2); CIHL, Rule 47.
224 Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Protocols,

op. cit. (note 6), paras 1611–1619.
225 Ibid., paras 1611–1619. See also CIHL, commentary on Rule 47.
226 AP I, Art. 42(1); CIHL, Rule 48.
227 AP I, Art. 42(2).
228 AP I, Art. 42(3).

THE CONDUCT OF HOSTILITIES 107

constitute an extreme measure, which shall always be preceded by warnings
appropriate to the circumstances.”229

2. Denial of quarter
Related to the protection of persons hors de combat is the longstanding prohi-
bition of denial of quarter, according to which “(i)t is prohibited to order that
there shall be no survivors, to threaten an adversary therewith or to conduct
hostilities on this basis.”230 The prohibition of denial of quarter makes it
illegal to deliberately refuse or render impossible an enemy’s surrender or to
put to death those who are hors de combat. Where enemies have been cap-
tured “under unusual conditions of combat which prevent their evacuation,”
they may be disarmed, but treaty IHL expressly requires that “they shall be
released and all feasible precautions shall be taken to ensure their safety.”231

Given that persons hors de combat are already protected, the added value of
the prohibition of denial of quarter lies in the restraints it imposes during the
conduct of hostilities, namely in the prohibition against ordering or conduct-
ing hostilities on the basis that there shall be no survivors.232 Thus, where enemy
combatants indicate an intention to surrender or otherwise become hors de
combat, they must be captured or, if their evacuation is not possible, released.
While this may not necessarily facilitate the conduct of small-scale oper-
ations in enemy territory, whether by commando units or remote-controlled
drones, the law is absolutely clear that there can be no derogation whatsoever
from the duty to give quarter and to respect persons hors de combat.

In principle, the prohibition against denial of quarter does not prevent bel-
ligerents from resorting to surprise attacks or from employing units and
weapon systems that are incapable of taking prisoners. However, methods
calculated to ensure the complete extermination of the opposing forces,
including the wounded and sick and those attempting to surrender, would
definitely breach the prohibition against denial of quarter. The point is that
an adversary endeavouring to surrender must be given the opportunity to do
so when circumstances reasonably permit. In the reality of air warfare, for
example, there may not always be room for declarations of surrender, but it
would still be unlawful to “double strike” or “finish off ” combatants who are
already placed hors de combat by wounds inflicted in a previous strike. Also,

229 GC III, Art. 42. See also Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on
the Additional Protocols, op. cit. (note 6), para. 1613.

230 AP I, Art. 40. See also Hague Regulations, Art. 23(d), and CIHL, Rule 46.
231 AP I, Art. 41(3). See also Chapter 5.II.2.a.
232 Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Protocols,

op. cit. (note 6), para. 1598. Article 23(c) of the Hague Regulations prohibits the killing and
wounding of a combatant hors de combat separately from the denial of quarter.

108 CHAPTER 3

the current development of highly sophisticated weapon systems capable of
operating autonomously at great speeds raises the question to what extent
the prohibition against denial of quarter would be compatible with the near
exclusive employment of means of warfare making it virtually impossible
for the adversary to surrender. It also prompts more general questions as to
the permissibility of such weapons under IHL.233

As a minimum, the prohibition against denial of quarter would seem to
require that the attacking forces remain receptive to a declaration of sur-
render should the opportunity arise and that they suspend attacks against
persons placed hors de combat. In other words, such persons are not to be
treated as outlaws who have forfeited all rights under IHL.234

3. Perfidy or treachery
Additional Protocol I prohibits the use of perfidy to kill, injure or capture an
adversary.235 States not party to the Protocol are bound by the customary pro-
hibition of perfidy, which also prohibits the killing, wounding or capturing of
an adversary by resort to perfidy.236 “Additionally, the customary prohibition
against treachery outlaws the treacherous killing or wounding by the belliger-
ent parties of ‘individuals belonging to the hostile nation or army’.”237 Perfidy
or treachery denotes “acts inviting the confidence of an adversary to lead him
to believe that he is entitled to, or is obliged to accord, protection under the
rules of international law applicable in armed conflict, with intent to betray
that confidence.”238 Examples of perfidious or treacherous acts given in treaty
IHL include the feigning of surrender or negotiation under a flag of truce, the
feigning of an incapacitation by wounds or sickness, the feigning of civilian,
non-combatant status, and the feigning of protected status by the use of the
signs, emblems or uniforms of the UN or of neutral or other non-belligerent
States. Of course, the same applies to the perfidious or treacherous misuse of
the protective emblems of the red cross, red crescent or red crystal.

In essence, the prohibition against perfidy or treachery upholds the good
faith of the belligerents in the protections afforded by IHL. It does not pro-
hibit ruses of war, that is to say, acts that are intended to mislead an adver-
sary or to induce him to act recklessly, but which do not mislead him with
respect to IHL protection and do not otherwise violate IHL. Examples of

233 AP I, Art. 36.
234 See also Instructions for the Government of Armies of the United States in the Field

(Lieber Code), 24 April 1863, Art. 148.
235 AP I, Art. 37.
236 CIHL, Rule 65.
237 Hague Regulations, Art. 23(b).
238 AP I, Art. 37.

THE CONDUCT OF HOSTILITIES 109

such ruses given in treaty IHL include the use of camouflage, decoys, mock
operations and misinformation.239 Thus, the prohibition against perfidy or
treachery does not prevent belligerents from carrying out operations that
depend on the element of surprise, such as uniformed commando raids and
attacks from camouflaged positions or properly marked stealth bombers. Nor
would the prohibition against perfidy or treachery prevent mere intelligence
gathering by undercover units disguised as civilians. If captured, however, such
personnel could be prosecuted as spies under the domestic legislation of the cap-
turing State.

4. Misuse of emblems, signs and uniforms
Apart from the use of perfidy to kill, injure or capture an adversary, IHL
also prohibits the misuse of recognized distinctive emblems and emblems of
nationality. In particular, it is prohibited to make improper use of emblems,
signs or signals provided for in IHL, such as the red cross, red crescent
or red crystal, or to deliberately misuse other internationally recognized
protective emblems, signs or signals, including the flag of truce, the pro-
tective emblem of cultural property (downward pointed square blue shield
on white ground), the distinctive signs of civil defence (orange triangle on
blue ground) and of installations containing dangerous forces (three orange
circles), and the distinctive emblem of the UN.240 IHL also prohibits the use
in an armed conflict of the flags or military emblems, insignia or uniforms
of neutral or non-belligerent States, whereas those of adverse parties may be
used as a ruse of war, except during direct hostile contact with the enemy,
namely while engaging in attacks or in order to shield, favour, protect or
impede military operations.241

V. MEANS OF WARFARE

1. Superfluous injury and unnecessary suffering
Originally, restrictions and prohibitions on the use of certain weapons were
motivated by the desire to protect combatants from disproportionate harm
and suffering. As early as 1868, the preambular paragraph of the St Petersburg
Declaration stated:

“That the only legitimate object (…) during war is to weaken the
military forces of the enemy;

239 Ibid. See also CIHL, Rule 57.
240 Hague Regulations, Art. 23(f ); GC I, Arts. 44, 53; GC II, Art. 44; AP I, Arts 37(1)(d), 38;

AP II, Art. 12; AP III, Art. 2(3); CIHL, Rules 59–61.
241 AP I, Art. 39; CIHL, Rules 62 and 63.

110 CHAPTER 3

That for this purpose it is sufficient to disable the greatest possible
number of men;
That this object would be exceeded by the employment of arms which
uselessly aggravate the sufferings of disabled men, or render their
death inevitable;
That the employment of such arms would, therefore, be contrary to
the laws of humanity.”

This reasoning inspired the emergence of one of the most basic principles
of IHL, which prohibits employing “weapons, projectiles and material and
methods of warfare of a nature to cause superfluous injury or unnecessary
suffering.”242 In application of this principle, IHL restricts or prohibits certain
types of weapon, the effects of which are considered to be excessively cruel
regardless of the circumstances, such as blinding laser weapons, expanding
bullets and weapons that injure by means of non-detectable fragments.243
The prohibition against causing superfluous injury or unnecessary suffering
also works as a general principle by which all means and methods of warfare
have to be measured.

In the absence of distinct treaty criteria as to what suffering is “unnecessary”
and what injury “superfluous,” the rule requires that a balance be struck
between considerations of military necessity and of humanity. This seems to
be the approach taken by many States244 and by the ICJ in its Advisory Opinion
on nuclear weapons, in which it argues that the prohibition against causing
superfluous injury or unnecessary suffering makes it unlawful to cause combat-
ants “harm greater than that unavoidable to achieve legitimate military object-
ives.”245 Accordingly, the principle would restrict the permissibility of inflicting
injury and suffering on combatants to that which is not otherwise prohibited
under IHL and which, additionally, is reasonably necessary to achieve a lawful
military purpose in the prevailing circumstances. For example, where the same
military advantage can be achieved through less harmful means, considerations
of humanity would require the use of such means. While this interpretation
of military necessity as a restrictive factor in the use of means and methods
of warfare against combatants and other military objectives is not generally
accepted, it corresponds best to the original spirit of the St Petersburg Declar-
ation and reflects the official position of the ICRC.246

242 Hague Regulations, Art. 23(e); AP I, Art. 35(2); CIHL, Rule 70.
243 See Section V.4.
244 CIHL, commentary on Rule 70.
245 ICJ, Legality of the Threat or Use of Nuclear Weapons, op. cit. (note 37), para. 78.
246 See, most notably, N. Melzer, Interpretive Guidance, op. cit. (note 129), Section IX. For a

critique of this approach and the ICRC’s official response, see “Forum on ‘Direct Partic-
ipation in Hostilities’,” op. cit. (note 150), pp. 769–916.

THE CONDUCT OF HOSTILITIES 111

➝ On the balance between military necessity and humanity, see also
Chapter 1.I.3.

2. Indiscriminate weapons
Based on the principle of distinction in general and the prohibition against
indiscriminate attacks in particular, IHL prohibits the use of weapons that
are by nature indiscriminate,247 that is to say, weapons that either cannot be
directed at a specific military objective, or the effects of which cannot be limited
as required by humanitarian law and, consequently, in each case, are of a nature
to strike military objectives and civilians or civilian objects without distinc-
tion.248 This also includes weapon systems that, as an inherent feature of
the technology employed and their intended use, may be expected to inflict
excessive collateral harm on the civilian population.249 Like the prohibition
against causing superfluous injury or unnecessary suffering, the prohibition
against using indiscriminate weapons not only operates as an independent
principle by which all means and methods of warfare have to be measured, it
has also spurred the development of a number of distinct treaties regulating
specific weapons, which are discussed below in Section V.4.

3. Natural environment
IHL also prohibits the use of weapons that are intended, or may be expected
to cause, widespread, long-term and severe damage to the natural environ-
ment.250 As we have seen (Section II.2.d. above), that prohibition has a rela-
tively high threshold. In particular, it may be argued that nuclear weapons
should be outlawed because they almost inevitably would have to be expected
to cause damage that is “widespread, long-term and severe.” In its 1996 Advi-
sory Opinion on nuclear weapons, the ICJ recognized that important envi-
ronmental factors had to be taken into account in the implementation of IHL,
but did not conclude that the use of nuclear weapons would necessarily be
unlawful on this account.251 It did find, however, that the use of such weapons
would be generally contrary to other IHL rules.252

4. Specifically regulated weapons
Based on the prohibitions against weapons of a nature to cause superflu-
ous injury or unnecessary suffering, indiscriminate weapons, and weapons
intended or expected to cause widespread, long-term and severe damage to

247 CIHL, Rule 71.
248 AP I, Art. 51(4); CIHL, Rule 12.
249 AP I, Art. 51(5).
250 AP I, Arts 35(3) and 55; CIHL, Rule 45.
251 ICJ, Legality of the Threat or Use of Nuclear Weapons, op. cit. (note 37), paras 29–31.
252 See Section 4.l.

112 CHAPTER 3

the natural environment, numerous specific means of warfare have been
prohibited or restricted in separate treaties.

(a) Poison
The prohibition against the use of poison or poisoned weapons in the
conduct of hostilities is a long-standing rule of treaty and customary IHL.253
The prohibition applies irrespective of military necessity and protects com-
batants and civilians alike. While treaty law does not provide an express
definition of “poison or poisoned weapons,” the ICJ has observed that these
terms “have been understood, in the practice of States, in their ordinary
sense as covering weapons whose prime, or even exclusive, effect is to poison
or asphyxiate.”254 Under the Rome Statute, the material element of the war
crime of employing poison or poisoned weapons requires the use of a sub-
stance that “causes death or serious damage to health in the ordinary course
of events, through its toxic properties.”255 The prohibition is not considered
to apply to weapons with a merely incidental poisoning effect, but only to
weapons that are actually designed to kill or injure by the effect of poison. In
sum, the prohibition against the use of poison or poisonous weapons outlaws
practices such as the poisoning of food and water supplies, the smearing
with poison of projectiles, bayonets and other penetrating weapons, or the
delivery of toxic substances through gases, injections or any other means.

(b) Exploding and expanding bullets
The prohibition against the use of exploding bullets originated in the 1868
St Petersburg Declaration, which banned the use of projectiles weighing
less than 400 grams that are either explosive or charged with “fulminat-
ing or inflammable substances.” It reflected the consideration that such
ammu nition would render inevitable the death of combatants injured by
such bullets and inflict suffering in excess of that needed to render them
hors de combat. In the meantime, general State practice has undisputedly
undermined this broad prohibition, most notably through the unprotested
introduction of exploding anti-aircraft bullets, other exploding anti-mate-
riel ammunition, and grenades lighter than 400 grams. Thus, while con-
temporary IHL still absolutely prohibits the use of bullets that are designed
to explode upon impact with the human body, anti-materiel bullets with the
same effect are prohibited only if used directly against persons.256

253 Hague Regulations, Art. 23(a); Rome Statute, Art. 8(2)(b)(xvii); Geneva Gas Protocol;
CIHL, Rule 72.

254 ICJ, Legality of the Threat or Use of Nuclear Weapons, op. cit. (note 37), para. 55. See also
CIHL, commentary on Rule 72.

255 K. Dörmann, Elements of War Crimes under the Rome Statute of the International Crim-
inal Court: Sources and Commentary, ICRC/Cambridge University Press, 2003, p. 281.

256 CIHL, Rule 78; United Nations Secretary-General’s Bulletin: Observance by United
Nations Forces of International Humanitarian Law, op. cit. (note 113), Section 6.2.

THE CONDUCT OF HOSTILITIES 113

For similar reasons, the use of expanding bullets as a means of warfare is
prohibited in all armed conflicts.257 The 1899 Hague Declaration defines
expanding bullets as “bullets which expand or flatten easily in the human
body, such as bullets with a hard envelope which does not entirely cover
the core or is pierced with incisions.”258 Expanding bullets result in signifi-
cantly larger wounds and thereby dramatically decrease chances of survival
for the injured. However, the use of expanding bullets is not prohibited in
law enforcement operations, where they are widely employed. The ration-
ale for using expanding bullets in law enforcement operations is threefold.
First, expanding bullets generally do not pass through the body of a targeted
suspect and therefore make incidental injury to innocent bystanders less
likely. Second, the greater stopping effect of expanding bullets increases the
chance of immediate incapacitation. Third, the expanding bullets used in
law enforcement operations are generally fired from pistols and carry much
less energy than rifle bullets, thus resulting in significantly lighter wounds.

(c) Non-detectable fragments
IHL prohibits the use of “any weapon the primary effect of which is to injure
by fragments which in the human body escape detection by X-rays,” such as
plastic or glass.259 The rationale for this prohibition is that non-detectable
fragments make it extremely difficult to treat the resulting injuries but entail
no military utility and that, therefore, they have to be regarded as in flicting
unnecessary suffering. The prohibition is limited, however, to weapons
whose “primary effect” is to injure by non-detectable fragments. Weapons
that may incidentally cause the same effects, such as bombs or ammu nition
containing plastic or glass components as part of their design, are not illegal
if the non-detectable fragments are produced incidentally and are not part
of the primary injuring mechanism.

(d) Booby-traps and other remote- or timer-controlled devices
The use of booby-traps and other remote or timer controlled devices is reg-
ulated primarily in 1996 Amended Protocol II to the Convention on Certain
Conventional Weapons (applicable in international and non-international
armed conflicts),260 and for the few States not yet party to this treaty, by
1980 Protocol II to the Convention on Certain Conventional Weapons

257 CIHL, Rule 77. See also United Nations Secretary-General’s Bulletin: Observance by
United Nations Forces of International Humanitarian Law, op. cit. (note 113).

258 1899 Hague Declaration concerning Expanding Bullets; see also Rome Statute,
Art. 8(2)(b)(xix), which employs identical wording to make the use of expanding bullets
in international armed conflicts a war crime.

259 Protocol I to the Convention on Certain Conventional Weapons; CIHL, Rule 79. See
also United Nations Secretary-General’s Bulletin: Observance by United Nations Forces of
International Humanitarian Law, op. cit. (note 113).

260 Amended Protocol II to the Convention on Certain Conventional Weapons.

114 CHAPTER 3

(applying to international armed conflict only) as well as by customary IHL.261
“Booby-traps” are defined as “any device or material which is designed,
constructed or adapted to kill or injure and which functions unexpectedly
when a person disturbs or approaches an apparently harmless object or per-
forms an apparently safe act.”262 For example, in the case of a booby-trapped
doorway an apparently safe act would be opening the door, and in the case of
a booby-trapped phone an apparently safe act would be accepting or making
a phone call. “Other devices” are defined as: “manually-emplaced munitions
and devices [including improvised explosive devices] designed to kill, injure
or damage and which are activated by remote control or automatically after
a lapse of time.”263

Of course, to be lawful, the use of booby-traps and other devices must
respect the general principles governing the conduct of hostilities, most
notably the principles of distinction, proportionality and precaution, as well
as the prohibitions against causing superfluous injury or unnecessary suf-
fering, against perfidy and against denial of quarter.264 Given the nature
of booby-traps and other devices and how they tend to be employed, their
use can pose a serious danger for civilians. It is lawful only when they are
either placed on, or in the close vicinity of, a military objective, or when
measures are taken to protect civilians from their effects, for example by
placing signs, warnings, sentries or fences.265 In no circumstances, however,
may booby-traps and other devices be attached to or associated with:

• protective emblems, signs or signals (such as the red cross);

• sick, wounded or dead persons; burial or cremation sites or graves;

• medical facilities, equipment, supplies or transports;

• children’s toys or other portable objects or products specially designed
for the feeding, health, hygiene, clothing or education of children;

• food or drink;

• kitchen utensils or appliances (except those in military installations);

261 CIHL, Rule 80.
262 Identical wording is used in Article 2(2) of Protocol  II to the Convention on Certain

Conventional Weapons and Article 2(4) of Amended Protocol II.
263 Amended Protocol II to the Convention on Certain Conventional Weapons, Art. 2(5).
264 Protocol II to the Convention on Certain Conventional Weapons, Arts 3(2)–(4) and 6(2);

and Amended Protocol  II to the Convention on Certain Conventional Weapons, Art.
3(3), (7), (8) and (10).

265 Protocol II to the Convention on Certain Conventional Weapons, Art. 4(2); and Amended
Protocol II to the Convention on Certain Conventional Weapons, Art. 7(3).

THE CONDUCT OF HOSTILITIES 115

• animals or their carcasses;

• objects of religious, historical or cultural significance.266

This list is complemented by a general prohibition on booby-traps or other
devices that are deliberately prefabricated in the form of apparently harm-
less portable objects and specifically designed to detonate when disturbed
or approached.267 For example, it would be prohibited to prefabricate boo-
by-trapped mobile phones and drop them en masse from aircraft over an area
controlled by the opposing armed forces. The rationale behind this prohi-
bition is to prevent entire areas from being contaminated with apparently
harmless explosive devices likely to harm combatants and civilians indis-
criminately. According to the ICRC, the prohibition against booby-traps
attached to or associated with objects or persons entitled to special protection
under IHL, and with objects likely to attract civilians, has become customary
law in all armed conflicts.268

Of course, booby-traps must always be used in compliance with the general
rules on the conduct of hostilities, including the prohibition against perfidy.
Beyond that, even objects that do not benefit from any particular protection
under IHL may not be booby-trapped if their use is connected to basic com-
ponents of society such as food, water, religion and children. Other appar-
ently harmless portable objects can lawfully be booby-trapped, provided
that such booby-traps are not deliberately prefabricated.

(e) Landmines
In IHL, landmines are defined as “a munition designed to be placed under, on
or near the ground or other surface area and to be exploded by the presence,
proximity or contact of a person or a vehicle.”269 When a mine is designed to be
exploded by the presence, proximity or contact of a person, and to incapacitate,
injure or kill one or more persons, it is termed an “anti-personnel mine.”

The 1997 Anti-Personnel Mine Ban Convention, which is adhered to by the
vast majority of States, completely bans the use, development, production,
acquisition, stockpiling, retention or transfer of anti-personnel mines.270 It

266 Protocol II to the Convention on Certain Conventional Weapons, Art. 6(1)(b); and, extend-
ed to “other devices,” Amended Protocol  II to the Convention on Certain Conventional
Weapons, Art. 7(1).

267 Amended Protocol  II to the Convention on Certain Conventional Weapons, Art. 7(2);
and Protocol II to the Convention on Certain Conventional Weapons, Art. 6(1)(a).

268 CIHL, Rule 80.
269 Anti-Personnel Mine Ban Convention, Art. 2(2). Almost identical wording is used

in Protocol  II to the Convention on Certain Conventional Weapons, Art. 2, and in
Amended Protocol II to the Convention on Certain Conventional Weapons, Art. 2.

270 Anti-Personnel Mine Ban Convention, Art. 1.

116 CHAPTER 3

also sets out specific deadlines for the destruction of anti-personnel mine
stockpiles and the clearance of land contaminated with such weapons.

For States not party to the Anti-Personnel Mine Ban Convention but party to
Amended Protocol II (or only to the original Protocol, as the case may be) to
the Convention on Certain Conventional Weapons, the use of anti-personnel
mines is governed by the latter, which prohibits the use of anti-personnel
mines that are not detectable. It also prohibits the use of hand-emplaced
anti-personnel mines if they do not have self-destruct and self-deactivation
mechanisms, unless the mines are placed within a perimeter-marked area
monitored by military personnel and protected by visible and durable fencing
or other means ensuring the effective exclusion of civilians.271 Remotely
delivered anti-personnel mines (i.e. delivered by artillery, rocket, mortar,
aircraft, etc.) must also be equipped with self-destruct and self-deactivation
features and any use of them must be recorded.272

The Protocol also contains general rules regulating the design and use
of landmines (both anti-personnel and anti-vehicle). In summary, it is
prohibited to use these weapons if they are designed to explode when detected
by commonly available mine-detection equipment or if they are of a nature
to cause unnecessary suffering or superfluous injury.273 It is also prohibited
to direct these weapons against civilians or civilian objects or to use them
indiscriminately.274 After the end of active hostilities, the parties to the
conflict must remove these mines275 and take all feasible precautions to protect
civilians from their effects.276 They must, at all times, maintain records on their
locations, and take measures to protect missions of the UN, and of the ICRC
and other humanitarian organizations, against the effects of these weapons.277

According to the ICRC, customary IHL requires that, whenever landmines
are used, particular care be taken to minimize their indiscriminate effects,
including by recording their placement and by removing or neutralizing
them at the end of active hostilities.278

271 See Amended Protocol II to the Convention on Certain Conventional Weapons, Art. 5
for further details.

272 Amended Protocol II to the Convention on Certain Conventional Weapons, Art. 6.
273 Amended Protocol II to the Convention on Certain Conventional Weapons, Art. 3(3) and (5).
274 Amended Protocol II to the Convention on Certain Conventional Weapons, Art. 3(7) and (8).
275 Amended Protocol II to the Convention on Certain Conventional Weapons, Arts 3(2) and 10.
276 Amended Protocol II to the Convention on Certain Conventional Weapons, Art. 9.
277 Amended Protocol II to the Convention on Certain Conventional Weapons, Arts 9 and 12.
278 CIHL, Rules 81–83.

THE CONDUCT OF HOSTILITIES 117

(f ) Incendiary weapons
In IHL, an “incendiary weapon” is “any weapon or munition which is primar-
ily designed to set fire to objects or to cause burn injury to persons through
the action of flame, heat, or combination thereof, produced by a chemical
reaction of a substance delivered on the target.”279 Incendiary weapons can
take the form of, for example, flame throwers, fougasses, shells, rockets,
grenades, mines, bombs and other containers of incendiary substances.
However, the category does not include munitions with merely incidental
incendiary effects (e.g. illuminants, tracers, smoke or signaling systems).
Also excluded are munitions “designed to combine penetration, blast
or fragmentation effects with an additional incendiary effect, such as
armour-piercing projectiles, fragmentation shells, explosive bombs or similar
combined-effects munitions in which the incendiary effect is not specifically
designed to cause burn injury to persons, but to be used against military
objectives such as armoured vehicles, aircraft and installations or facilities.”280

Concern about incendiary weapons dates back to the use of napalm and
similar weapons during the Viet Nam War in the 1970s and the impact on
civilians. Although a number of States advocated a total ban on incendiary
weapons during the negotiations of the Convention on Certain Conventional
Weapons, the provisions ultimately adopted in the protocol annexed to that
treaty (Protocol on Prohibitions or Restrictions on the Use of Incendiary
Weapons, or Protocol  III) restrict rather than prohibit their use. Beyond
reiterating the prohibition against direct attacks on civilians, the Protocol
bans the use of air-delivered incendiary weapons against military objectives
located within a concentration of civilians (i.e. any inhabited cities, towns,
villages or camps, or any groups of individual civilians); it also restricts the
use of other incendiary weapons to situations where the military objective
targeted is clearly separated from the surrounding concentration of civilians
and when all feasible precautions are taken with a view to protecting civilians
and civilian objects from incidental harm.281

The ICRC considers that customary IHL applicable in any armed conflict
not only obliges belligerents using incendiary weapons to take particular care
to avoid causing incidental harm to civilians, but also that it prohibits the
anti-personnel use of such weapons against combatants if such use would
cause unnecessary suffering, i.e. if it is feasible to use a less harmful weapon
to render a combatant hors de combat.282

279 Protocol III to the Convention on Certain Conventional Weapons, Art. 1(1).
280 Protocol III to the Convention on Certain Conventional Weapons, Art. 1(1)(b).
281 Protocol III to the Convention on Certain Conventional Weapons, Art. 2.
282 CIHL, Rules 84 and 85.

118 CHAPTER 3

(g) Blinding laser weapons
Customary and treaty IHL prohibits the use of laser weapons specifically
designed, as their sole combat function or as one of their combat functions,
to cause permanent blindness (i.e. irreversible and uncorrectable loss of
vision) to unenhanced vision, that is, to the naked eye or to the eye with
corrective eyesight devices.283 Laser systems with an incidental blinding
effect, such as certain target recognition or munition guidance systems,
and weapons designed to blind temporarily (so-called “dazzling lasers”)
are not prohibited blinding laser weapons. When using such permitted
laser systems, belligerent parties must take all feasible precautions to avoid
causing permanent blindness to unenhanced vision.284

(h) Cluster munitions
“Cluster munitions” are weapons that are dropped from aircraft, or fired
by artillery, mortars, rockets and missiles, and subsequently release large
numbers of explosive submunitions. These explosive submunitions are gen-
erally free-falling and scatter over very wide areas. Incorrect use, wind and
other factors can cause them to strike well outside the intended target area.
In addition, a significant proportion of submunitions often fail to detonate
as intended, contaminating large areas with unexploded ordnance. Like
anti-personnel mines, unexploded submunitions often pose a constant threat
to the civilian population and hamper agriculture, reconstruction and infra-
structure development for many years beyond the end of an armed conflict.

In order to address these dangers, governments in 2008 adopted the
Convention on Cluster Munitions, which prohibits the use, production,
acquisition, stockpiling, retention and transfer of cluster munitions.285 It
also requires States to destroy their stocks of cluster munitions, to clear
contaminated areas and to provide for the medical care, rehabilitation,
psychological support, and social and economic inclusion of cluster
munition victims in areas under their jurisdiction or control.286

Not every weapon system containing submunitions is covered by the
Convention on Cluster Munitions. The Convention prohibits those weapons
that have been a source of humanitarian concern. For the purposes of the
Convention, cluster munitions are defined as conventional munitions
designed to disperse or release explosive submunitions of less than 20
kilograms each. Excluded from the definition are munitions designed to

283 Protocol on Blinding Laser Weapons (Protocol IV to the 1980 Convention), Art. 1; CIHL,
Rule 86.

284 Protocol on Blinding Laser Weapons (Protocol IV to the 1980 Convention), Arts 1–3.
285 Convention on Cluster Munitions, Art. 1.
286 Convention on Cluster Munitions, Arts 4 and 5.

THE CONDUCT OF HOSTILITIES 119

dispense flares, smoke, pyrotechnics or chaff, or to produce electrical or
electronic effects, or the function of which is limited to air defence. Also
excluded are munitions containing less than ten explosive submunitions of
more than four kilograms each, provided that each of these submunitions
is designed to detect and engage a single target object and is equipped to
electronically self-destruct and self-deactivate.287

(i) Explosive remnants of war
During the 1990s, the international community became acutely aware of the
humanitarian consequences of anti-personnel mines. However, the prob-
lems generated by other forms of unexploded ordnance had not been widely
examined. Consequently, there were very few IHL rules to minimize the
civilian casualties caused by other weapons, such as unexploded artillery
and mortar shells, hand grenades, cluster munitions and bombs, which
often pose a significant threat to civilians, peacekeepers and humanitarian
workers after the end of an armed conflict. Protocol V to the Convention on
Certain Conventional Weapons, on Explosive Remnants of War, was adopted
in 2003 to address this problem. The Protocol does not ban or restrict any
particular kind of weapon but requires the parties to an armed conflict to
take measures to reduce the dangers posed by unexploded and abandoned
ordnance (otherwise referred to as “explosive remnants of war”).288

Specifically, the Protocol requires each party to a conflict to record
information on the explosive ordnance used by its armed forces during a
conflict and, after the end of active hostilities, to share that information so as
to facilitate the clearance of weapons that have become explosive remnants
of war. Once active hostilities have ended, each party is responsible for
marking and clearing explosive remnants of war in the territory that it
controls. The parties are also required to provide technical, material and
financial assistance to facilitate the removal of explosive remnants of war
that result from their operations and which are located in areas they do not
control. This assistance can be provided directly to the party in control of
the territory or through third parties such as the UN, international agencies
or non-governmental organizations. Until such weapons are removed or
destroyed, each party must take all feasible precautions to protect civilians.
This may include fencing and monitoring territory affected by explosive
remnants of war, and providing warnings and risk education.

287 Convention on Cluster Munitions, Art. 2.
288 The Protocol covers a wide range of explosive ordnance, but does not apply to landmines,

booby-traps and other devices, which are covered by other instruments.

120 CHAPTER 3

Many of the Protocol’s requirements are formulated as obligations of means, e.g.
“where feasible” or “as far as practicable.” Nevertheless, applied in good faith,
they provide a strong framework for facilitating a rapid response to explosive
remnants of war. Protocol V, the 1997 Anti-Personnel Mine Ban Convention
and the 2008 Convention on Cluster Munitions together constitute a compre-
hensive legal framework for preventing or minimizing the post-conflict deaths,
injuries and suffering inflicted by explosive munitions left on the battlefield.

(j) Chemical weapons
The use of chemical weapons is prohibited by numerous treaties, including
the 1899 Hague Declaration concerning Asphyxiating Gases, the 1925
Geneva Gas Protocol, the 1993 Chemical Weapons Convention, and the
Rome Statute. The prohibition is also considered to be customary law in any
armed conflict.289 The most comprehensive regulatory regime is set out in
the 1993 Chemical Weapons Convention, which defines chemical weapons
as “toxic chemicals and their precursors, except where intended for purposes
not prohibited,” munitions exclusively designed for the delivery of toxic
chemicals and other equipment designed for use with such munitions.290
The Chemical Weapons Convention prohibits not only the use of chemical
weapons, but also their development, production, acquisition, stockpiling,
retention and transfer. The prohibition applies “under any circumstances” and
can therefore be regarded as absolute. The Convention further requires the
destruction of both chemical weapons production facilities and the weapons
themselves, and establishes a verification regime overseen by the Organisation
for the Prohibition of Chemical Weapons and requiring States Parties: (1) to
provide national reporting on industrial chemical production; (2) to accept
continuous and routine inspections of treaty-related facilities; (3) and to allow
short-notice challenge inspections of any facility on national territory. Finally,
the Convention also prohibits the use of riot-control agents, albeit only as a
method of warfare and not for the purposes of law enforcement.291

(k) Biological weapons
The 1925 Geneva Gas Protocol bans the use of bacteriological agents in
warfare, and the 1972 Biological Weapons Convention prohibits the devel-
opment, production and stockpiling of “microbial or other biological agents,
or toxins” of types and in quantities that have no justification for peace-
ful purposes, and of weapons, equipment or means of delivery designed to
use such agents or toxins for hostile purposes or in armed conflicts. The
pro hibition against biological weapons is considered to apply as customary

289 CIHL, Rule 74.
290 Chemical Weapons Convention, Art. II(1).
291 Chemical Weapons Convention, Art. I(5); CIHL, Rule 75.

THE CONDUCT OF HOSTILITIES 121

law in any armed conflict.292 Biological weapons affecting exclusively the
non-human environment would have to be separately evaluated under the
prohibition against weapons designed or expected to cause widespread,
long-term and severe damage to the natural environment.

➝ On the special protection afforded to the natural environment, see
Section II.2.d. above.

(l) Nuclear weapons
Nuclear weapons have severe humanitarian consequences resulting from the
heat, blast and radiation generated by a nuclear explosion and the distances
over which these forces may be spread. The detonation of a nuclear weapon
in or near populated areas can cause enormous numbers of casualties and
extensive damage to civilian infrastructure, rendering effective medical and
humanitarian assistance almost impossible in the immediate aftermath.
Many survivors will subsequently succumb to radiation sickness or certain
kinds of cancer. Since their first and only use in Hiroshima and Nagasaki in
1945, the international community has wrestled with the legality of nuclear
weapons under international law.

At present, IHL does not expressly ban the use of nuclear weapons in armed
conflicts.293 In its 1996 Advisory Opinion, the ICJ concluded that the use of
nuclear weapons would be “generally contrary” to the principles and rules
of IHL, but was unable to “reach a definitive conclusion as to the legality or
illegality of the use of nuclear weapons by a State in an extreme circumstance
of self-defence, in which its very survival would be at stake.”294 The ICJ did
find, however, that States were under an obligation to conduct negotiations
with a view to nuclear disarmament.

In 2011, the Movement updated its position on nuclear weapons, indicating
that it “finds it difficult to envisage how any use of nuclear weapons could be
compatible with the rules of international humanitarian law, in particular the
rules of distinction, precaution and proportionality.”295 It also made a historic
appeal, calling on States to ensure that nuclear weapons are never again used,
regardless of their views on the legality of such weapons, and to urgently pursue

292 CIHL, Rule 73.
293 For further developments related to arms control in the field of nuclear weapons, see, for

example, the Treaty for the Prohibition of Nuclear Weapons in Latin America and the
Caribbean, 14 February 1967.

294 ICJ, Legality of the Threat or Use of Nuclear Weapons, op. cit. (note 37), para. 97.
295 Working toward the elimination of nuclear weapons, Resolution 1, Council of Delegates,

Geneva, 2011. Available at: http://www.icrc.org/eng/assets/files/publications/icrc-002-
1130.pdf

122 CHAPTER 3

and conclude negotiations to prohibit the use of and completely elimin ate
nuclear weapons through a legally binding international agreement.

5. Legal review of new weapons and technologies of warfare
Article 36 of Additional Protocol I states: “In the study, development, acquisition
or adoption of a new weapon, means or method of warfare, a High Contracting
Party is under an obligation to determine whether its employment would, in
some or all circumstances, be prohibited by (…) international law.” The obliga-
tion to conduct a legal review of new weapons applies both in times of armed
conflict and in times of peace, and aims to ensure that the weapons developed,
manufactured or procured by States comply with international law. More spe-
cifically, the purpose of a weapons review is to prevent the use of weapons that
would always violate international law and to restrict the use of those that would
violate international law in some circumstances. The obligation to conduct a
weapons review also applies to all States irrespective of their treaty obligations
because they are legally responsible for ensuring that they do not use prohibited
weapons or use lawful weapons in a manner that is prohibited.296

The systematic and comprehensive legal review of every new weapon system is
instrumental to ensuring respect for IHL in operational practice. In essence,
when conducting a legal review of a particular weapon system, a State must
determine whether that system’s “normal or expected use would be prohib-
ited under some or all circumstances,”297 in other words, whether the weapon
system is capable of being used in compliance with IHL. The answer to this
question depends on whether all or part of the weapon system, in some or all
circumstances:

• would already be prohibited under a specific weapons treaty;

• would constitute an indiscriminate weapon;

• would be of a nature to cause superfluous injury or unnecessary
suffering, or widespread, long-term and severe damage to the
natural environment;

• would contradict the “principles of humanity” or “public conscience”
(Martens Clause).

In practice, a weapon’s effects will always result from a combination of design
and the manner in which it is used. In assessing the legality of a particular
weapon, therefore, the reviewing authority must examine not only the weapon’s

296 See GC I–IV, common Art. 1.
297 Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Protocols,

op. cit. (note 6), para. 1469.

THE CONDUCT OF HOSTILITIES 123

inherent design and characteristics but also how, when and where it is intended
to be used.

The duty to systematically review the legality of weapons is of particular
importance today in light of the rapid development of new weapons technol-
ogies, such as remote-controlled drones and increasingly autonomous robots,
cyber capabilities, nanotechnology, and the militarization of space. Arguably,
this duty can also be derived from the Martens Clause, which is considered to
be customary law. The ICJ, when discussing the “cardinal principles” of IHL
in its Advisory Opinion on nuclear weapons, recognized that the Martens
Clause “had proved to be an effective means of addressing the rapid evolution
of military technology.”298 Thus, a weapon that does not contravene any exist-
ing rules of treaty IHL could nevertheless be considered unlawful if it were
found to be contrary to the principles of international law as derived from
custom, the principles of humanity or the dictates of public conscience. The
Clause makes clear that the general principles and values that have inspired
the restriction of warfare throughout history remain valid also in the face
of today’s rapidly developing weapons technology. For example, while IHL
does not expressly restrict the permissibility of autonomous weapon systems,
serious ethical challenges requiring consideration from the perspective of
“humanity” and “public conscience” may well arise when it comes to delegat-
ing “life-and-death” decisions to autonomous machines. While not a regula-
tory provision in itself, therefore, the Martens Clause nevertheless provides
essential guidance for interpreting, applying and amending individual provi-
sions in line with the objects and purposes of IHL as a whole.

➝ For more information on the Martens Clause, see Chapter 1.II.3.

While the legal challenges arising in the review of such systems may be signifi-
cant, this is not the place to discuss these questions in detail. For the present
purposes, suffice it to point out that there can be no doubt that the existing
rules and principles of IHL apply to any emerging weapons technology.

298 ICJ, Legality of the Threat or Use of Nuclear Weapons, op. cit. (note 37), paras 78 ff.

124 CHAPTER 3

299

299 All ICRC documents available at: www.icrc.org

To go further (Methods and means of warfare)299

• ICRC e-learning module, The means and methods of warfare. Available at:
http://www.icrcproject.org/elearning/en/ihl/M7/index.html

• William Boothby, Weapons and the Law of Armed Conflict, Oxford University
Press, 2009, 464 pp.

• Michael Schmitt (ed.), Tallinn Manual on the International Law Applicable to
Cyber Warfare, Cambridge University Press, 2013, 215 pp.

• Nils Melzer, Human Rights Implications of the Usage of Drones and Unmanned
Robots in Warfare, European Parliament, Directorate-General for External
Policies of the Union, Directorate B, Policy Department, Brussels, 2013.

• Dominique Loye and Robin Coupland, “The 1899 Hague Declaration concern-
ing expanding bullets: A treaty effective for more than 100 years faces complex
contemporary issues,” IRRC, Vol. 85, No. 849, March 2003, pp. 135–142.

• Cordula Droege, “Get off my cloud: Cyber warfare, international humanitarian law,
and the protection of civilians,” IRRC, Vol. 94, No. 886, Summer 2012, pp. 533–578.

• “Means of warfare,” IRRC, Vol. 87, No. 859, September 2005.

• “Methods of warfare,” IRRC, Vol. 88, No. 864, December 2006.

• “New technologies and warfare,” IRRC, Vol. 94, No. 886, Summer 2012.

• ICRC, A Guide to the Legal Review of New Weapons, Means and Methods of
Warfare: Measures to Implement Article 36 of Additional Protocol  I of 1977,
ICRC, Geneva, 2006.

• Geneva Academy of International Humanitarian Law and Human Rights,
Weapons Law Encyclopaedia. Available at: http://www.weaponslaw.org

How Does Law Protect in War?

• Case No. 62, ICJ, Nuclear Weapons Advisory Opinion

• Case No. 80, United States, Memorandum of Law: The Use of Lasers as
Anti-Personnel Weapons

• Case No. 92, United States Military Court in Germany, Trial of Skorzeny and
Others

• Case No. 179, United States, Surrendering in the Persian Gulf War

THE CONDUCT OF HOSTILITIES 125

VI. SPECIFIC ISSUES ARISING IN NON-INTERNATIONAL
ARMED CONFLICTS

Although the final draft of Additional Protocol  II contained essentially the
same rules on the conduct of hostilities as Additional Protocol  I, almost all
of them were deleted from the draft in a last-minute attempt to obtain a con-
sensus on a “simplified” version of the treaty. The reason for this move was
that many contracting States wanted to avoid giving the impression that dis-
sident armed forces, insurgent groups and other non-State belligerents taking
up arms against their government could benefit from any level of legitimacy
or privilege. As a result, current treaty IHL governing non-international
armed conflicts does not contain a specific chapter on the conduct of hostili-
ties defining key combat-related terms such as “civilians,” “armed forces” and
“attacks,” or regulating the preparation and conduct of military operations
in any significant detail. Nevertheless, common Article 3 and Additional
Protocol II reflect essentially the same rationale as treaty IHL governing the
conduct of hostilities in international armed conflicts. Thus, all provisions of
IHL governing non-international armed conflicts are equally binding on all
belligerent parties, regardless of whether they are States or non-State armed
groups (equality of belligerents). Also, Additional Protocol II essentially repli-
cates the corresponding provisions of Additional Protocol I when it expressly
prohibits the denial of quarter300 and attacks against the civilian population,301
objects indispensable to the survival of the civilian population,302 works and
installations containing dangerous forces,303 and cultural objects and places
of worship.304

1. Protection of the civilian population
In essence, treaty IHL applicable in non-international armed conflicts builds
on the same cardinal distinction between fighters and civilians as IHL
governing international armed conflicts. In IHL governing non-international
armed conflicts, the first category is composed of the “armed forces,” “dissident
armed forces” and “other organized armed groups” carrying out “sustained
and concerted military operations” under “responsible command,” whereas
the second category comprises the “civilian population” and “individual
civilians,” who “enjoy general protection against the dangers arising
from military operations” conducted by these armed forces or groups.305
Accordingly, direct attacks against the civilian population and individual

300 AP II, Art. 4(1).
301 AP II, Art. 13.
302 AP II, Art. 14.
303 AP II, Art. 15.
304 AP II, Art. 16.
305 GC I–IV, common Art. 3; AP II, Arts 1(1) and 13(1).

126 CHAPTER 3

civilians, along with acts or threats of violence the primary purpose of which
is to spread terror among the civilian population, are prohibited.306 Civilians
are entitled to this protection in all circumstances, unless and for such time as
they take a direct part in hostilities.307

Although treaty IHL does not expressly require those planning and conduct-
ing military operations in non-international armed conflicts to take feas –
ible precautionary measures in attacks and against the effects of attacks, or
to abstain from attacks that may be expected to cause excessive incidental
harm to civilians and civilian objects, the relevant provisions applicable in
international armed conflicts are considered to apply as customary law in
non-international armed conflicts as well.308

2. Organized armed groups
The fact that there is no formal privilege of combatancy in situations of
non-international armed conflict does not mean that the fighting forces
of the belligerent parties are civilians. It is generally recognized that
members of State armed forces do not qualify as civilians, and the wording
and logic of common Article 3 and Additional Protocol II suggest that the
same applies to members of organized armed groups. Also, State practice
confirms that members of organized armed groups fighting for a non-State
party to a conflict lose their civilian status and, in principle, may be law-
fully attacked in the same way as State combatants in international armed
conflicts. In a generic sense, and for the purposes of the principle of dis-
tinction, therefore, the fighting personnel of a non-State party to a conflict
are sometimes also described as “fighters” or “unprivileged combatants.”

Organized armed groups constitute the armed forces (i.e. the military
wing) of a non-State party to a conflict and must not be confused with
the party itself (e.g. an insurgency or rebellion as a whole, including its
political or administrative wing) or with other supportive segments of the
civilian popu lation. Where part of the armed forces turns against its own
government, membership in such “dissident armed forces” will (at least
initially) depend on the same formal criteria that determine membership in
the governmental armed forces. Other organized armed groups, however,
are essentially made up of persons recruited from the civilian population.
In many armed conflicts, civilians may support a non-State belligerent
in many different ways and may even take a direct part in hostilities on
a spontaneous, sporadic or unorganized basis. For the purposes of the

306 AP II, Art. 13(2); CIHL, Rules 1 and 2.
307 AP II, Art. 13(3); CIHL, Rule 6.
308 CIHL, Rules 14–24.

THE CONDUCT OF HOSTILITIES 127

principle of distinction, however, they cannot be regarded as members
of an organized armed group unless they assume a continuous combat
function for a belligerent party (i.e. a continuous function involving their
direct participation in hostilities). Continuous combat function does not
imply that they are entitled to the privilege of combatancy, prisoner-of-
war status, or any other form of immunity from domestic prosecution for
lawful acts of war. Rather, it makes a strictly functional distinction between
members of the organized fighting forces and the civilian population. Thus,
while in international armed conflicts members of the armed forces have
the “right” to directly participate in hostilities on behalf of a belligerent
party (combatant’s privilege), members of organized armed groups in non-
international armed conflicts have the “function” to do so (combat function).
In sum, just as is the case in international armed conflicts, only members of
the actual fighting forces lose their civilian status and protection; supporters,
sympathizers and political or religious leaders remain part of the civilian
population and may only be attacked if and for such time as they directly
participate in hostilities.309

➝ See also the membership criteria for irregular armed forces in
international armed conflicts, in Section I.1.a. above.

3. Military objectives, civilian objects and specially
protected objects

Treaty IHL applicable in non-international armed conflicts defines military
objectives and civilian objects in the same terms as Additional Protocol I does
for international armed conf licts.310 The relevant provisions prohibiting
attacks and reprisals against civilian objects in international armed conflicts
are considered to apply as customary law in non-international armed con-
flicts as well.311 Furthermore, Additional Protocol II expressly provides special
protection for objects indispensable to the survival of the civilian population,
installations containing dangerous forces and cultural property, and uses
similar terms as the provisions applicable in international armed conflicts.312
In particular, the Second Protocol to the Hague Convention of 1954 for the
Protection of Cultural Property in the Event of Armed Conflict extends the
Convention’s applicability to non-international armed conflicts.

309 For the ICRC’s official position on this issue see N. Melzer, Interpretive Guidance, op. cit.
(note 129), Section II.

310 Amended Protocol  II to the Convention on Certain Conventional Weapons, Art. 2(6)
and (7). See Section II.1.

311 CIHL, Rules 7, 10 and 148.
312 AP II, Arts 14–16.

128 CHAPTER 3

4. Weapons regulation in non-international armed conflicts
Common Article 3 and Additional Protocol II do not contain any general pro-
visions regulating the use of certain weapons in non-international armed
conflicts. As “cardinal principles” of customary international law, however,
the principle of distinction, the prohibition against causing unnecessary
suffering, and the Martens Clause govern the lawfulness of weapons in any
armed conflict, including those that are non-international in nature.313 As
the ICTY rightly observed, “Elementary considerations of humanity and
common sense make it preposterous that the use by States of weapons pro-
hibited in armed conflicts between themselves be allowed when States try to
put down rebellion by their own nationals on their own territory. What is
inhumane, and consequently proscribed, in international wars cannot but
be inhumane and inadmissible in civil strife.”314 Consequently, a number of
weapon-specific prohibitions or restrictions are applicable as customary
law in non-international armed conflicts as well, including the prohibition
against poisonous, biological and chemical weapons, blinding laser weapons,
expanding and exploding bullets, and weapons primarily injuring by non-
detectable fragments, along with restrictions on the use of incendiary weapons
and of mines, booby-traps and other devices.315

The growing recognition that the humanitarian prohibitions and restrictions
on certain weapons must apply equally in all armed conflicts is also reflected
in Amended Protocol II to the Convention on Certain Conventional Weapons,
which applies to both international and non-international armed conflicts,
and in the fact that, in 2001, Article 1 of the Convention was amended to
extend the applicability of the Convention and its four protocols at that time
(and subsequently of Protocol  V) to non-international armed conflicts and
to non-State parties to such conflicts. Even more expansive is the scope of
applic ability of the Chemical Weapons Convention, the Anti-Personnel Mine
Ban Convention and the Convention on Cluster Munitions, all of which apply
in “any circumstances,” regardless of their legal classification.

313 AP II, Preamble; CIHL, Rules 70 and 71.
314 ICTY, The Prosecutor v. Dusko Tadić, op. cit. (note 69), para. 119.
315 CIHL, Rules 72–86.

THE CONDUCT OF HOSTILITIES 129

316

316 All ICRC documents available at: www.icrc.org

To go further (Specific issues arising in non-international armed conflicts)316

• Sandesh Sivakumaran, The Law of Non-International Armed Conflict, Oxford
University Press, Oxford, 2012, pp. 386–429.

• The Manual on the Law of Non-International Armed Conflict, International
Institute of Humanitarian Law, San Remo, 2006, pp. 18–45.

• Jean-Marie Henckaerts, “Study on customary international humanitarian
law: A contribution to the understanding and respect for the rule of law in
armed conflict,” IRRC, Vol. 87, No. 857, March 2005, pp. 188–190.

• Nils Melzer, Interpretive Guidance on the Notion of Direct Participation in
Hostilities under International Humanitarian Law, ICRC, Geneva, 2009,
85 pp.

How Does Law Protect in War?

• Case No. 245, Human Rights Committee, Guerrero v. Colombia

• Case No. 257, Afghanistan, Goatherd Saved from Attack

• Case No. 272, Civil War in Nepal

• Case No. 278, Angola, Famine as a Weapon

Chapter 4
The wounded and sick and
the medical mission

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132 CHAPTER 4

Structure
I. The wounded, the sick and the shipwrecked
II. Medical and religious personnel
III. Medical units and transports
IV. Hospital, safety and neutralized zones
V. The distinctive emblems
VI. The missing and the dead
VII. Specific issues arising in non-international armed conflicts

In a nutshell

➝ The wounded and sick must receive, to the fullest extent prac-
ticable and with the least possible delay, the medical care and
attention required by their condition.

➝ The wounded, the sick and the shipwrecked, medical and re-
ligious personnel, and medical units and medical transports
must be protected and respected in all circumstances.

➝ Medical personnel must treat patients impartially, regardless
of sex, race, nationality, religion, political opinion or any other
similar criteria.

➝ No one may be compelled to perform medical activities con-
trary to the rules of medical ethics, or punished for carrying
out medical activities compatible with medical ethics, re-
gardless of the beneficiary.

➝ Medical personnel may not be compelled to give any infor-
mation that would prove harmful to the wounded and the
sick, or to their families, except as required by law.

➝ The dead must be treated with respect and protected against
mutilation and pillage.

➝ Whenever circumstances permit, and particularly after an
engagement, each party to a conflict must, without delay, take
all possible measures to search for, collect and evacuate the
wounded, the sick, the shipwrecked and the dead.

➝ Belligerent parties must take all feasible measures to account
for persons reported missing as a result of an armed conflict
and provide their family members with any information they
have on their fate.

THE WOUNDED AND SICK AND THE MEDICAL MISSION 133

317

It was the agony of 40,000 wounded and dying soldiers on the battlefield
of Solferino that moved Henry Dunant to initiate the process that led to
the adoption of the original Geneva Convention for the Amelioration of the
Condition of the Wounded in Armies in the Field in 1864 and of the red
cross on a white ground as the protective emblem of military medical ser-
vices.318 To this day, one of the most tragic aspects of armed conflict is the
enormous amount of suffering, mutilation and death caused by wounds and
sickness resulting from the ravages of war. Modern treaty IHL recognizes

317 All ICRC documents available at: www.icrc.org
318 See 150 years of humanitarian action: The battle of Solferino, film, ICRC, 2014.

Available at: http://www.youtube.com/watch?v=Rr8pRVduqWQ

To go further317

• Health care in danger: The human cost, film, ICRC, 2013. Available at: http://
www.youtube.com/watch?v=Cr3eknFzhWs

• ICRC e-learning module, Health care in danger: The legal framework. Availa-
ble at: http://www.icrcproject.org/elearning/health-care-in-danger2/

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 7: Protection of the wounded, sick
and shipwrecked, pp. 195–209.

• Larissa Fast, Aid in Danger: The Perils and Promise of Humanitarianism,
University of Pennsylvania Press, Philadelphia, 2014, 336 pp.

• Alexander Breitegger, “The legal framework applicable to insecurity and vio-
lence affecting the delivery of health care in armed conflicts and other emer-
gencies,” IRRC, Vol. 95, No. 889, Spring 2013, pp. 83–127.

• Fiona Terry, “Violence against health care: Insights from Afghanistan,
Somalia, and the Democratic Republic of the Congo,” IRRC, Vol. 95, No. 889,
Spring 2013, pp. 23–39.

• Pierre Gentile, “Q&A: Health care in danger,” IRRC, Vol. 95, No. 890,
Summer 2013, pp. 341–350.

• “Violence against health care: The problem and the law,” IRRC, Vol. 95, No.
889, Spring 2013.

• “Violence against health care: The way forward,” IRRC, Vol. 95, No. 890,
Summer 2013.

• ICRC, Health Care in Danger: The Responsibilities of Health-Care Personnel
Working in Armed Conflicts and Other Emergencies, ICRC, Geneva, 2012, 104 pp.

134 CHAPTER 4

death, injury and destruction as an inevitable side-effect of armed conflict,
but aims to prevent human suffering where it is unnecessary and to alleviate
it where it cannot be prevented. The very same idea that motivated Henry
Dunant on the battlefield of Solferino in 1859 went on to inspire the 1949
Geneva Conventions and their Additional Protocols, in particular their
rules on the protection of the wounded and sick and the medical mission.

I. THE WOUNDED, THE SICK AND THE SHIPWRECKED

1. Scope of personal protection
Originally, treaty IHL governing international armed conflicts strictly limited
its protection to wounded, sick and shipwrecked members of the armed forces.
Thus, the initial Geneva and Hague Conventions protected “combatants”319 or,
in the case of naval forces, “sailors and soldiers,”320 and subsequent versions
only slightly expanded their protective scope to “other persons officially
attached” to the fleets or armies of belligerent parties.321 After World War II, a
first attempt was made to ensure medical care and protection for all persons
in need of medical attendance, including those belonging to the civilian
population. Although the First and Second Geneva Conventions still limited
their protection to those categories of person entitled to prisoner-of-war
status under the Third Geneva Convention,322 the Fourth Geneva Convention
aimed to ensure the provision of protection and care to all other persons who
were wounded, sick or otherwise in need of medical attention.323

It was only with the adoption of Additional Protocols I and II of 1977 that the
concepts of “wounded,” “sick” and “shipwrecked” were finally defined as includ-
ing all persons irrespective of their military or civilian status. Thus, according to
Additional Protocol I:

• “‘wounded’ and ‘sick’ mean persons, whether military or civilian,
who, because of trauma, disease or other physical or mental
disorder or disability, are in need of medical assistance or care
and who refrain from any act of hostility. These terms also cover

319 Geneva Convention for the Amelioration of the Condition of the Wounded in Armies in
the Field, 22 August 1864, Art. 6(1).

320 Hague Convention No. III for the Adaptation to Maritime Warfare of the Principles of
the Geneva Convention of 22 August 1864, 29 July 1899, Art. 8.

321 Geneva Conventions for the Amelioration of the Condition of the Wounded and Sick
in Armies in the Field, 6 July 1906 and 27 July 1929, Art. 1(1); Hague Convention No.
X for the Adaptation to Maritime Warfare of the Principles of the Geneva Convention,
18 October 1907, Art. 11.

322 GC I and II, Art. 13; GC III, Art. 4.
323 GC IV, Arts 16–22, 38(2), 55–57, 81(1), 85 and 91–92.

THE WOUNDED AND SICK AND THE MEDICAL MISSION 135

maternity cases, new-born babies and other persons who may be in
need of immediate medical assistance or care, such as the infirm or
expectant mothers, and who refrain from any act of hostility”;324

• “‘shipwrecked’ means persons, whether military or civilian, who
are in peril at sea or in other waters as a result of misfortune
affecting them or the vessel or aircraft carrying them and who
refrain from any act of hostility. These persons, provided that
they continue to refrain from any act of hostility, shall continue
to be considered shipwrecked during their rescue until they
acquire another status under the Conventions or this Protocol.”325

Additional Protocol I also specifies that its provisions aiming to protect the
wounded, sick and shipwrecked apply to all persons affected by a situation
of international armed conflict, without any adverse distinction founded
on race, colour, sex, language, religion or belief, political or other opinion,
national or social origin, wealth, birth or other status, or on any other similar
criteria.326 Today, in the ICRC’s view, this comprehensive scope of protection
can be regarded as part of customary IHL applicable in all armed conflicts.327

The treaty definition of the wounded, sick and shipwrecked only covers
persons refraining from any act of hostility, but it does not require actual
incapacitation of the persons in question by wounds, sickness or ship-
wreck. For military personnel and others who have directly participated in
hostilities, refraining from acts of hostility is also a precondition for being
recognized as hors de combat.328 Thus, a wounded person who continues
or resumes fighting the enemy is neither hors de combat nor protected as
a wounded person within the meaning of IHL. Conversely, a combatant
needing medical treatment who refrains from any act of hostility benefits
from protection as a wounded person even if his wounds have not incapac-
itated him.

The fact that someone is entitled to specific protection as a wounded, sick or
shipwrecked person does not preclude that same person from also benefiting
from protection under other rules of IHL. Thus, in addition to the specific
care and protection afforded to the wounded, sick and shipwrecked under the
First and Second Geneva Conventions, persons entitled to prisoner-of-war
status who have fallen into the power of the enemy will benefit from

324 AP I, Art. 8(a).
325 AP I, Art. 8(b).
326 AP I, Art. 9(1); CIHL, Rules 109 and 110.
327 CIHL, commentary on Rule 109.
328 AP I, Art. 41(2); CIHL, Rule 47.

136 CHAPTER 4

the protection of the Third Geneva Convention until their final release
and repatriation.329 Other persons will continue to benefit from the Fourth
Geneva Convention and the fundamental guarantees of Additional Proto-
col I until the end of the hostilities or, as the case may be, until their release,
repatriation or re-establishment.330

➝ On the concept of hors de combat, see Chapter 3.IV.1.

2. Respect, protection and care
The wounded, sick and shipwrecked must be respected and protected in all
circumstances and wherever they are.331 As always in the context of IHL, the
word “respect” denotes a duty to refrain from attack, abuse or any other act
likely to cause danger or injury. This obligation applies not only to the armed
forces, but also to the civilian population, which must in particular abstain
from any act of violence against the wounded, sick and shipwrecked.332 The
word “protect,” on the other hand, always implies a positive obligation to
shield the persons in question from harm and to proactively safeguard their
rights. In the case of the wounded, sick and shipwrecked, the duty to protect
also requires that they be searched for and collected, whereas the provision
of medical care is regarded as a conceptually separate, additional obligation
tailored to the specific needs of these categories of person.333 Accordingly,
whenever feasible, and particularly after military engagements, each party
to the conflict must search for, collect and evacuate the wounded, sick and
shipwrecked from the zone of hostilities, or from besieged or encircled
areas, and protect them against ill-treatment and pillage.334 If a belligerent
party is forced to abandon wounded or sick members of its armed forces to
the enemy it must, as far as military considerations permit, leave with them
part of its medical personnel and material to assist in their care.335 In any
case and at all times, belligerent parties must treat the wounded, sick and
shipwrecked humanely and, to the fullest extent practicable, provide them
with the required medical treatment without distinction or priority on any
grounds other than medical ones.336

329 GC I, Arts 5 and 14; GC II, Art. 16; GC III, Art. 5(1).
330 GC IV, Art. 6(4); AP I, Art. 75.
331 GC I, Arts 4 and 12; GC II, Arts 5 and 12(1); GC IV, Art. 16 (1); AP I, Art. 10(1).
332 GC I, Art. 18(2); AP I, Art. 17(1); CIHL, Rule 111.
333 See, e.g., Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional

Protocols, op. cit. (note 6), paras 446–448.
334 GC I, Art. 15; GC II, Art. 18; CIHL, Rules 109 and 111.
335 GC I, Art. 12(5).
336 GC I and II, Art. 12(2) and (3); AP I, Arts 9(1) and 10(2); CIHL, Rule 110.

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THE WOUNDED AND SICK AND THE MEDICAL MISSION 137

The duty of a belligerent party to respect, protect and care for the wounded,
sick and shipwrecked in its power implies that their physical or mental health
and integrity may not be endangered by any unjustified act or omission.337
On the most basic level this means, of course, that the wounded, sick and
shipwrecked may not be murdered or exterminated, subjected to torture, or
deliberately left without medical care or exposed to contagion or infection.338
Further, wounded, sick and shipwrecked persons may not be subjected to
any medical procedure that is not warranted by their state of health and
not consistent with generally accepted medical standards, including, in
particular, any unwarranted mutilations, experiments, and removal of tissue
or organs.339 In order to avoid abuse, each party to a conflict must keep a
medical record for inspection by the Protecting Power or the ICRC, which
should list all medical procedures undertaken with respect to persons who
are deprived of their liberty for reasons related to the conflict.340

341

II. MEDICAL AND RELIGIOUS PERSONNEL

The wounded, sick and shipwrecked cannot be protected unless the medical
and religious personnel coming to their aid also benefit from protection. The
latter must have access to the wounded and sick on the battlefield, must be
protected against all acts of hostility and must be allowed to perform their
medical or religious functions without impediment even if they fall into the
power of the enemy.

337 AP I, Art. 11(1).
338 GC I and II, Art. 12(2); CIHL, Rule 111.
339 AP I, Art. 11(1), (2) and (3).
340 AP I, Art. 11(6).
341 All ICRC documents available at: www.icrc.org

To go further (The wounded, the sick and the shipwrecked)341

• Jann K. Kleffner, “Protection of the wounded, sick, and shipwrecked,” in
Dieter Fleck, Handbook of International Humanitarian Law, 3rd ed., Oxford
University Press, Oxford, 2013, pp. 321–332.

• ICRC, Commentary on the First Geneva Convention, 2nd ed.,
ICRC/Cambridge University Press, 2016, Articles 12 and 15.

How Does Law Protect in War?

• Case No. 91, British Military Court at Hamburg, The Peleus Trial

• Case No. 147, Israel, Navy Sinks Dinghy off Lebanon

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138 CHAPTER 4

1. Definitions

(a) Medical personnel
According to Additional Protocol I, the term “medical personnel” refers to
military or civilian persons who have been formally assigned by a party to a
conflict to one of the following purposes:

• medical purposes stricto sensu, i.e. the search for, collection,
transportation, diagnosis or treatment of the wounded, sick and
shipwrecked, or the prevention of disease;

• the administration of medical units, or the operation or adminis-
tration of medical transports.

Such assignments may be permanent or temporary, but must always be exclu-
sive, which means that belligerent parties may not assign such personnel duties
other than their medical functions.342

(b) Categories of medical personnel
IHL divides medical personnel into three basic categories.

• Medical personnel of a party to a conflict: This first category includes
the permanent and temporary medical personnel of the armed forc-
es, the navy and the merchant marine, but also the medical personnel
and crews of hospital ships. It further includes civilian medical per-
sonnel, and those assigned to civil defence organizations.343

• Medical personnel of National Societies or other voluntary aid soci-
eties: The second category includes personnel of National Societies or
other national voluntary aid societies duly recognized and author-
ized by the belligerent parties. In order to be regarded as “national,”
such societies must be established in the territory of the belligerent
party concerned; in order to be “recognized,” they generally must
be constituted in accordance with national law and regulations; and
they can be considered as “authorized” by a belligerent party when
they are officially permitted to employ medical personnel on its be-
half and under its military laws and regulations.344

• Medical personnel seconded by neutral States or humanitarian
organizations: The third category comprises medical personnel of
medical units or transports made available to a party to the conflict
for humanitarian purposes: (i) by a neutral or other non-belligerent

342 AP I, Art. 8(c) and (k); Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on
the Additional Protocols, op. cit. (note 6), para. 353.

343 GC I, Arts 24 and 25; GC II, Arts 36 and 37; AP I, Arts 8(c)(i) and 61(a)(vi).
344 GC I, Art. 26; AP I, Art. 8(c)(ii); Y. Sandoz, C. Swinarski, B. Zimmermann (eds),

Commentary on the Additional Protocols, op. cit. (note 6), para. 358.

THE WOUNDED AND SICK AND THE MEDICAL MISSION 139

State, (ii) by a recognized and authorized aid society of such a State;
or (iii) by an impartial international humanitarian organization.345

(c) Official assignment versus spontaneous charity
Only persons who have been formally assigned to medical duties by a bellig-
erent party qualify as medical personnel in the technical sense. Other persons
performing medical functions are generally protected as civilians, but are not
entitled to use the distinctive emblems and do not enjoy the special rights
and privileges of medical personnel on the battlefield or when they fall into
enemy hands. This does not mean, of course, that modern IHL discourages
the kind of spontaneous charity and humanitarian action that inspired Henry
Dunant on the battlefield of Solferino. IHL even expressly permits the civilian
population and aid societies to collect and care for the wounded, sick and
shipwrecked on their own initiative and, if they do so in response to appeals
by the belligerents, entitles them to protection and support from all parties
to the conflict.346 Without official assignment and supervision, however, they
cannot be regarded as medical personnel within the meaning of IHL.

(d) Religious personnel
According to Additional Protocol I, the term “religious personnel” refers to
military or civilian persons, such as chaplains, who are exclusively engaged
in the work of their ministry and who are permanently or temporarily
attached to the armed forces, civil defence organizations, medical units or
medical transports of a party to a conflict, or to medical units or transports
seconded to a party to a conflict by neutral States or humanitarian organiza-
tions.347 Thus, in order to qualify as religious personnel within the meaning
of IHL, the persons concerned must be exclusively devoted to their min-
istry and may not fulfill any other functions, regardless of the religion to
which they belong. They do not have to be incorporated in the armed forces
and can therefore retain their civilian status, but they must necessarily be
attached to a military, civil defence or medical service officially recognized
and authorized by a belligerent party.

2. Protection

(a) Duty to respect and protect
Personnel exclusively assigned to medical and religious duties must be
respected and protected in all circumstances.348 This means that medical and
religious personnel may not be directly attacked, threatened or hindered in

345 GC I, Art. 27; AP I, Arts 8(c)(iii) and 9(2).
346 GC I, Art. 18; GC II, Art. 21; AP I, Art. 17; CIHL, commentary on Rule 109.
347 AP I, Art. 8(d).
348 GC I, Arts 24 and 25; GC II, Arts 36 and 37; AP I, Art. 15(1); CIHL, Rules 25 and 27.

140 CHAPTER 4

their activities, but also that they and their particular role must be actively
protected and supported by the belligerents. The duty to respect and protect
medical and religious personnel is not a personal privilege but a derivative
of the protection afforded to the wounded, the sick and the shipwrecked.
Therefore, medical and religious personnel lose their special protection
pursuant to the same principles as medical units, namely if they commit,
outside their humanitarian function, acts harmful to the enemy.349

➝ On the loss of protection due to acts harmful to the enemy, see
Section III.1.c. below.

(b) Status upon capture
Medical and religious personnel who have fallen into the hands of an adverse
party are not to be regarded as prisoners of war irrespective of whether they
are civilians or members of the armed forces.350 Medical and religious person-
nel of enemy nationality may be retained to the extent required to meet the
medical and spiritual needs of prisoners of war, but must be released as soon
as their services are no longer indispensable for that purpose.351 As long as they
are retained, such personnel are entitled, as a minimum, to the same bene fits
and protection as prisoners of war. Personnel seconded by neutral States or
international organizations may not be detained and must be released as soon
as a route for their return is open and military considerations permit.352

(c) Duty to provide help and assistance
To fulfil their important humanitarian mission, medical and religious
personnel need more than special respect and protection; they must
also be provided with all the support and assistance they may require in
the circumstances at hand. This is particularly important in the case of
civilian medical personnel, who do not automatically benefit from the
operational and logistical support of the armed forces, especially in areas
where existing civilian medical services have been disrupted by combat
activity. Additional Protocol  I thus expressly obliges belligerent parties, if
needed, to afford civilian medical personnel operating in such areas “all
available help.”353 It is clear that, in a combat zone, this obligation must be
limited to what can reasonably be expected from a belligerent considering
the circumstances prevailing on the battlefield. By contrast, in occupied
territories, where the occupying power already exercises effective control,
civilian medical personnel must be afforded “every assistance” to enable

349 GC I, Art. 21; AP I, Art. 13; CIHL, Rules 25 and 27.
350 GC I, Art. 28(2). This applies to persons covered by GC I, Arts 24 and 26. See also Chapter 5.I.2.
351 GC I, Arts 28(1) and (3) and 30(1); GC II, Art. 37.
352 GC I, Art. 32; GC II, Art. 33(1); AP I, Art. 9(2).
353 AP I, Art. 15(2).

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THE WOUNDED AND SICK AND THE MEDICAL MISSION 141

them to perform their humanitarian functions to the best of their ability.354
In any case, subject to the supervisory and safety measures that the relevant
party to a conflict may deem necessary, IHL requires that civilian medical
personnel be granted access to any place where their services are essential.355
Given the importance of medical care, it is clear that any supervisory or
security measures restricting access for civilian medical personnel to the
wounded, the sick and the shipwrecked must be carefully considered and,
wherever possible, accompanied by measures alleviating the humanitarian
consequences of such restrictions. For example, in a medical emergency, a
belligerent party may have to delay the interrogation of a wounded or sick
person in order to allow evacuation or treatment as required by his or her
medical condition.

(d) Protection of medical ethics
In situations of armed conflict, belligerent parties may be tempted to influ-
ence and exploit the work of medical personnel for political, military or
other purposes outside their humanitarian mission. Additional Protocol  I
therefore emphasizes that no one may be prevented from performing acts
required by the rules of medical ethics or punished for having done so. Like-
wise, persons engaged in medical activities may not be compelled to violate
the rules of medical ethics, for example by giving priority to the treatment
of any person except on medical grounds, or by carrying out any other tasks
that are not compatible with their humanitarian mission.356 Additional
Protocol I also protects the confidentiality of medical information. Accord-
ingly, persons engaged in medical activities may not be compelled to give
any information concerning the wounded and sick under their care, if such
information would, in their opinion, prove harmful to the patients con-
cerned or to their families. It should be noted, however, that this prohibition
remains subject to the obligations that medical personnel may have towards
their own belligerent party under national law, and to regulations for the
compulsory notification of communicable diseases.357 358

354 AP I, Art. 15 (3).
355 AP I, Art. 15 (4).
356 AP I, Arts 15 (3) and 16 (1) and (2); CIHL, Rule 26.
357 AP I, Art. 16 (3).
358 All ICRC documents available at: www.icrc.org

To go further (Medical and religious personnel)358

• Health-care workers must not be attacked, film, ICRC, 2011. Available at:

• ICRC, Health Care in Danger: The Responsibilities of Health-Care Personnel
Working in Armed Conflicts and Other Emergencies, ICRC, Geneva, 2012, 104 pp.

142 CHAPTER 4

III. MEDICAL UNITS AND TRANSPORTS

1. Protection of medical units

(a) Definition of “medical units”
In safeguarding the medical mission for the benefit of the wounded, the sick
and the shipwrecked, IHL protects not only medical and religious person-
nel, but also medical facilities, transports, equipment and supplies used for
medical purposes. Originally, medical units were protected only if they were
attached to the medical services of the armed forces, or if they qualified as
civilian hospitals.359 Additional Protocol  I subsequently expanded the term

359 GC I, Art. 19(1); GC IV, Art.18(1).

• Ryan Goodman and Mindy Jane Roseman (eds), Interrogations, Forced
Feedings, and the Role of Health Professionals: New Perspectives on International
Human Rights, Humanitarian Law and Ethics, Harvard University Press,
2009, 228 pp.

• Laurent Gisel, “Can the incidental killing of military doctors never be excessive?,”
IRRC, Vol. 95, No. 889, Spring 2013, pp. 215–230.

• Vivienne Nathanson, “Medical ethics in peacetime and wartime: The case for
a better understanding,” IRRC, Vol. 95, No. 889, Spring 2013, pp. 189–213.

• Jean Pictet, “The medical profession and international humanitarian law,”
IRRC, Vol. 25, No. 247, July 1985, pp. 191–209.

• Christian Enemark, “Triage, treatment and torture: Ethical challenges for
US military medicine in Iraq,” Journal of Military Ethics, Vol. 7, Issue 3, 2008,
pp. 186–201.

• Conditions for Recognition of National Societies, ICRC, 2005. Available at:
http://www.icrc.org/eng/resources/documents/misc/6erk5h.htm

• World Medical Association, Regulations in Times of Armed Conflict and Other
Situations of Violence. Available at: https://www.wma.net/policies-post/wma-
regulations-in-times-of-armed-conflict-and-other-situations-of-violence/

How Does Law Protect in War?

• Case No. 186, Iraq, Medical Ethics in Detention

• Case No. 187, Iraq, Care for Wounded Enemies

THE WOUNDED AND SICK AND THE MEDICAL MISSION 143

“medical units” to include all establishments and other units, whether military
or civilian, fixed or mobile, permanent or temporary, that meet two criteria:

• they must be organized for medical purposes, namely the search
for, collection, transportation, diagnosis or treatment of the
wounded, sick and shipwrecked, or for the prevention of disease;

• they must be exclusively assigned to such purposes by a party to
the conflict.

This definition includes, for example, hospitals and other similar units,
blood transfusion centres, preventive medicine centres and institutes,
medical depots and the medical and pharmaceutical stores of such units.360

(b) Scope of protection
Military medical units, and civilian medical units recognized and authorized
by one of the belligerent parties, must be respected and protected at all times.
They may be neither directly attacked nor used to shield military objectives
from attacks. In order to avoid incidental harm to medical units, the bellig-
erent parties should endeavour to locate such units at a safe distance from
military objectives, and to notify each other of their location. Failure to do
so, however, does not exempt the adverse party from its duty to respect and
protect medical units.361 Should military medical units fall into the power of
the adverse party, their personnel must be permitted to pursue their duties
until the capturing party itself ensures the necessary care of the wounded
and sick found in such establishments and units.362 Moreover, their premises,
material and stores may not be diverted from their purpose as long as they are
required for the care of the wounded and sick irrespective of their allegiance.363
Should civilian medical units fall into the power of the enemy, which is con-
ceivable particularly in cases of belligerent occupation, the occupying power
may not requisition their resources as long as they are needed for the civilian
population and for the wounded and sick already under treatment.364 Even if
this should not be the case, such requisitions are permissible only to the extent
and for such time as they are required for the immediate medical treatment of
wounded and sick members of the armed forces, including prisoners of war.365
In any case, the occupying power remains responsible for ensuring that the
medical needs of the civilian population continue to be satisfied.366

360 AP I, Art. 8(e) and (k).
361 GC I, Art. 19; GC IV, Art. 18; AP I, Art. 12; CIHL, Rule 28.
362 GC I, Arts 19(1), 33(2) and 35(2).
363 GC I, Art. 33(2).
364 AP I, Art. 14(2).
365 AP I, Art. 14(3).
366 AP I, Art. 14(1).

144 CHAPTER 4

(c) Loss of protection due to acts harmful to the enemy
The special protection of medical units ceases when they are used to commit,
outside their humanitarian function, acts harmful to the enemy.367 Treaty IHL
does not define “acts harmful to the enemy,” but it is clear that such acts do not
necessarily have to involve offensive combat action. According to the Com-
mentary on the Geneva Conventions, hiding able-bodied combatants, arms
or munitions, deliberately impeding military action, or serving as a military
observation post are sufficient cause to lose special protection.368 On the other
hand, treaty IHL also provides a non-exhaustive list of ex amples of conduct or
circumstances that may not be regarded as acts harmful to the enemy, namely:

• that the personnel of the unit are armed with light individual
weapons, and that they use such weapons for their own defence or
for that of the wounded and sick in their charge;

• that the unit is guarded by a picket, by sentries or by an escort;

• that small arms and ammunition taken from the wounded and sick,
and not yet handed to the proper service, are found in the units;

• that members of the armed forces or other combatants are in the
unit for medical reasons;

367 GC I, Art. 21; GC IV, Art. 19(1); AP I, Art. 13(1); CIHL, Rule 28.
368 ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016, op. cit. (note 63), Art. 21.

Puttumatalan, Sri Lanka, 2009. An ICRC team evacuates wounded civilians by ferry to Trincomalee.

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• that personnel and material of the veterinary service are found in
the unit, without forming an integral part thereof;

• that the humanitarian activities of military medical units or of
their personnel extend to the care of civilian wounded or sick.369

These provisions do not prevent belligerent parties from imposing more
restrictive security measures on civilian medical units and personnel oper-
ating in territory under their control. For example, an occupying power
may legitimately prohibit the carrying of individual weapons throughout
the occupied territory. Civilian medical units and personnel found to be
operating in violation of such a prohibition may be warned and, if neces-
sary, deprived of their special protection by the occupying power.

For medical units, loss of special protection does not, however, necessarily
entail loss of protection against direct attack. If medical units are used to
commit acts harmful to the enemy, such as collecting and communicating
intelligence unrelated to combat operations, they may lose their special pro-
tection as medical units, but they still retain their status as civilian objects.
While such medical units are no longer entitled to special support or pro-
tected from interference with their work, they remain protected against direct
attack unless their use also turns them into military objectives or, in the case
of personnel, unless and for such time as their conduct amounts to direct par-
ticipation in hostilities.370 Whether this is the case must be determined sep-
arately for each situation. In certain circumstances, misusing the protection
granted to medical units in order to engage in hostilities may also amount to
perfidy and, therefore, constitute a war crime.371 In any case, the special pro-
tection for medical units, whether civilian or military, does not cease unless
a warning has been given and, whenever appropriate, a reasonable time limit
has been set and disregarded.372

2. Protection of medical transports
In practice, the protection of the wounded, the sick and the shipwrecked often
depends on the respect and protection afforded to the means of transport used
to rescue them, evacuate them from danger zones and take them to hospi-
tals or other medical facilities where they can receive the requisite medical
assistance and care. IHL contains numerous detailed provisions regulating
the status, rights, duties and protection of the various means of medical trans-
portation in a wide variety of circumstances.

369 GC I, Art. 22; GC IV, Art. 19(2); AP I, 13(2).
370 On the definition of military objectives and of direct participation in hostilities, see

Chapter 3, Sections II.1.a and I.4.
371 For the definition of perfidy, see Chapter 3.IV.3.
372 GC I, Art. 21; GC IV, Art. 19(1); AP I, Art. 13(1).

146 CHAPTER 4

(a) Definition of “medical transports”
The term “medical transports” refers to any means of transportation, whether
military or civilian, assigned exclusively to the transportation of the wounded,
the sick and the shipwrecked, of medical and religious personnel, and of
medical equipment or supplies protected by IHL.373 Such assignments may be
permanent or temporary, and may include means of transportation by land,
water or air, such as ambulances, hospital ships and medical aircraft, as long
as they are authorized by a belligerent party.374

(b) Scope of protection
In principle, unless otherwise regulated, all medical transports benefit
from the same protection as mobile medical units.375 Accordingly, all
medical transports exclusively assigned to medical transportation must be
respected and protected in all circumstances.376 This means that medical
transports may legitimately be searched by belligerent parties, but cannot
be directly attacked or arbitrarily obstructed in their humanitarian work.
This also means that, in cases of medical emergency and to the maximum
extent possible, medical evacuation and treatment must be given prior-
ity over legitimate security interests such as search and interrogation. As
with medical personnel and medical units, medical transports lose their
special protection only if they are being used, outside their humanitar-
ian function, to commit acts harmful to the enemy. Thus, for example,
an ambulance used for the military deployment of combatants, weapons
and ammunition, or for collecting and communicating military intelli-
gence, would certainly lose its special protection under IHL and may even
become a military objective subject to lawful attack. On the other hand,
an ambulance may not be deprived of its special protection simply because
its personnel carry light weapons for the purpose of defending themselves
or the patients being transported, or because it is found carrying small
arms and ammunition taken from wounded and sick passengers. Here,
too, the loss of the special protection afforded to medical transports does
not necessarily entail loss of protection against direct attack. For example,
the deliberate use of ambulances to hamper crowd-control measures taken
by occupying forces against rioting civilians may entail loss of the special
protection afforded to medical transports, but would not be sufficient to
turn such ambulances into military objectives. Consequently, such ambu-
lances may be lawfully seized or otherwise interfered with, but remain
civilian objects protected against direct attack.

373 AP I, Art. 8(f )-(g).
374 AP I, Art. 8(g)-(j).
375 GC I, Art. 35; AP I, Arts 21 and 23.
376 GC I, Art. 35; GC IV, Art. 21; AP I, Arts 21 and 23; CIHL, Rule 29.

THE WOUNDED AND SICK AND THE MEDICAL MISSION 147

(c) Hospital ships and coastal rescue craft
Hospital ships are ships built or equipped specially and solely with a view
to assisting, treating and transporting the wounded, the sick and the
shipwrecked. They may be military or civilian, and can carry military or
civilian patients, but must belong to, be commissioned by, or be seconded to
a belligerent party.377 Hospital ships that are duly notified and distinctively
marked as such may be inspected and searched by the belligerent parties, but
must be respected and protected at all times. In particular, unlike medical
units and other means of medical transportation, hospital ships may not be
captured or requisitioned by the enemy.378 While warships may demand that
hospital ships hand over wounded, sick and shipwrecked military personnel,
civilian patients may not be surrendered except to their country of origin.379
Hospital ships must assist the wounded, the sick and the shipwrecked without
distinction of nationality or allegiance. They may not hamper the movements
of belligerents and may not be used for any military purpose.380 When hospital
ships are used to commit, outside their humanitarian duties, acts harmful to
the enemy, they lose their special protection after a warning – coupled, in
appropriate circumstances, with a time limit – has been disregarded.381

In principle, coastal rescue craft operated by belligerent parties or by offi-
cially recognized lifeboat institutions enjoy the same protection as hospital
ships. Given that the systematic notification and reliable identification of
such small and fast-moving vessels may not always be possible in practice,
their entitlement to protection does not depend on their prior notification to
the enemy. At the same time, however, their entitlement to protection is also
not absolute but applies only “so far as operational requirements permit.”382

(d) Medical aircraft
Another noteworthy special regime under IHL applies to medical aircraft.
Treaty IHL defines medical aircraft as military or civilian aircraft that are
exclusively assigned to medical transport under the authority of a belliger-
ent party, whether permanently or temporarily. They must be marked with
the distinctive emblem on their lower, upper and lateral surfaces. Under the
1949 Geneva Conventions, medical aircraft must be respected and may not
be attacked as long as they fly at altitudes, times and on routes specifically
agreed upon between the belligerents.383 Additional Protocol  I further

377 GC II, Arts 22(1) and 25; AP I, Art. 22(2).
378 GC II, Arts 22, 24 and 25.
379 GC II, Art. 14; AP I, Art. 22(1).
380 GC II, Art. 30(1)–(3).
381 GC II, Art. 34.
382 GC II, Art. 27; AP I, Art. 22(3).
383 GC I, Arts 36–37; GC II, Arts 39–40; GC IV, Art. 22.

148 CHAPTER 4

develops that position and provides that medical aircraft that are recognized
as such, but that operate in the absence of or in deviation from an agreement
between the belligerent parties, must nevertheless be respected or, in the
case of unauthorized flights over enemy-controlled areas, must be given rea-
sonable time for compliance before they may be attacked. In particular, bel-
ligerent parties may order medical aircraft to land or alight on water for
immediate inspection. Inspected aircraft and their occupants must be
authorized to continue their flight without delay if the inspection shows that
they qualify as medical aircraft and have not been used in deviation of their
strictly medical function under IHL or of their duties under an applicable
agreement between the belligerent parties. Should the inspection result in
proof to the contrary, the aircraft concerned may be seized and their occu-
pants held or otherwise treated in accordance with their status under IHL.384

384 AP I, Arts 24–30.

Field hospital 50 km west of Sirte, Libya, 2011. A wounded patient being carried into a helicopter
for transport to hospital in Tripoli.

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385

IV. HOSPITAL, SAFETY AND NEUTRALIZED ZONES

IHL governing international armed conflicts provides for the establishment,
always with the agreement of all the belligerents involved, of special zones and
localities for the protection of the wounded, the sick and other particularly
vulnerable groups from the effects of war. In essence, there are two types of
zones or localities: hospital and safety zones, which should be at a safe distance
from the hostilities, and neutralized zones, which aim to provide protection and
shelter in the combat area itself. While this distinction may be useful as a matter
of concept, it does not prevent belligerent parties from agreeing on combined,
modified or alternative places of refuge that better meet the requirements of the
specific context or situation. The belligerent parties can also agree on the estab-
lishment of demilitarized zones or declare certain inhabited places as non-de-
fended localities. In both cases, the focus is not necessarily on the wounded and
sick, but on the protection of the civilian population in general. Non-defended
localities and demilitarized zones are discussed in Chapter 3.II.3.

1. Hospital and safety zones and localities
Hospital zones and localities are organized specifically with the aim of pro-
tecting the wounded and sick from the effects of war. Also protected are
personnel entrusted with the organization and administration of such
zones and localities and with the care of the wounded and sick. Safety zones

385 All ICRC documents available at: www.icrc.org

To go further (Medical units and transports)385

• Health Care in Danger: Libya, film, ICRC, 2011. Available at: http://www.you-
tube.com/watch?v=nh4z8o6xUN0

• Antonio Cassese, “Under what conditions may belligerents be acquitted of the
crime of attacking an ambulance?,” Journal of International Criminal Justice,
Vol. 6, No. 2, 2008, pp. 385–397.

• Jann Kleffner, “Protection of the wounded, sick and shipwrecked,” in Dieter
Fleck (ed.), The Handbook of International Humanitarian Law, 3rd ed., Oxford
University Press, Oxford, 2013, pp. 334–338.

• Ambulance and Pre-Hospital Services in Risk Situations, Norwegian Red
Cross, Mexican Red Cross and ICRC, 2013.

How Does Law Protect in War?

• Case No. 146, Lebanon, Helicopter Attack on Ambulances

150 CHAPTER 4

and localities extend the same protection to particularly vulnerable groups
within the civilian population, namely aged persons, children under 15,
expectant mothers and mothers of children under seven.386 Hospital and
safety zones and local ities can also be combined. They can be established
before or during an armed conflict, whether in national or in occupied ter-
ritory, but should be located at a safe distance from the combat zone and
preferably be permanent in nature. In this context, the term “locality” refers
to specific, well-delimited places, such as buildings or camps, whereas the
term “zone” refers to a relatively large area and may include one or several
localities. Treaty IHL expressly invites the Protecting Powers and the ICRC
to lend their good offices in order to facilitate the institution and recogni-
tion of hospital zones and localities, and provides a draft agreement – in
an annex to the First and Fourth Geneva Conventions – for their mutual
recognition by the belligerent parties.387

2. Neutralized zones
Neutralized zones are generally temporary in nature and are established
in the actual combat zone to protect the wounded, the sick and peaceful
civilians from the dangers arising from the surrounding hostilities. The
establishment of a neutralized zone may be initiated by the belligerent parties
themselves, but may also be proposed by the ICRC based on its general right
of humanitarian initiative.388 Such neutralized zones should be open, without
adverse distinction, to all military or civilian persons who are wounded or
sick and, additionally, to all civilians who do not take part in the hostilities
and who, while they reside in the zones, do not perform any work of a military
character. The belligerent parties should agree in writing on the geographical
position, administration, food supply and supervision of the proposed
neutralized zone, and on the beginning and duration of the neutralization.389

3. Protection
While the 1949 Geneva Conventions do not expressly specify the scope of
protection afforded to hospital, safety or neutralized zones and localities, it
is generally accepted that attacks against such zones are prohibited under
customary IHL.390 This conclusion is supported by the fact that, under the
Rome Statute, intentional attacks against hospitals and places where the
sick and wounded are collected constitute a serious violation of the laws

386 On the terminology used in this context, see J.S. Pictet (ed.), Geneva Convention Relative
to the Protection of Civilian Persons in Time of War, Vol. IV of The Geneva Conventions of
12 August 1949: Commentary, ICRC, Geneva, 1958, p. 120.

387 GC I, Art. 23 and Annex I; GC IV, Art. 14 and Annex I.
388 On the ICRC’s right of initiative, see Chapter 8.II.6.
389 GC IV, Art. 15.
390 CIHL, Rule 35.

THE WOUNDED AND SICK AND THE MEDICAL MISSION 151

and customs of war, unless the targeted localities qualify as military object-
ives.391 A prohibition against attacks, and a stipulation on the general duty
of belligerents to respect and protect hospital and safety zones at all times,
are also included in the draft agreements annexed to the First and Fourth
Geneva Conventions.392

393

V. THE DISTINCTIVE EMBLEMS

The emblems of the red cross, the red crescent and the red crystal

1. Three distinctive emblems
The distinctive emblems of the Geneva Conventions and their Additional
Protocols are the red cross, the red crescent and the red crystal on a white
ground.394 Another emblem recognized in the 1949 Geneva Conventions, the
red lion and sun, has not been used since the only State that ever employed it,
the Islamic Republic of Iran, replaced it by the red crescent in 1980. All three
emblems may be used for the same purposes and under the same conditions,
and enjoy equal status and respect under IHL.

391 Rome Statute, Art. 8(2)(b)(ix). For the definition of military objectives, see Chapter 3.II.1.a.
392 GC I and IV, Annex I, Art. 11.
393 All ICRC documents available at: www.icrc.org
394 The distinctive emblems of the red cross and red crescent (and of the red lion and sun)

have long been recognized in treaty IHL (GC I, Art. 38 and GC II, Art. 41). Additional
Protocol III, which entered into force on 14 January 2007, additionally recognized the red
crystal as a distinctive emblem with equal status.

To go further (Hospital, safety and neutralized zones)393

• Jean-Philippe Lavoyer, “International humanitarian law, protected zones
and the use of force,” in Wolfgang Biermann and Martin Vadset (eds),
UN Peacekeeping in Trouble: Lessons Learned from the former Yugoslavia,
Ashgate, Aldershot, 1998, pp. 262–279.

How Does Law Protect in War?

• Case No. 205, Bosnia and Herzegovina, Constitution of Safe Areas

152 CHAPTER 4

2. Protective use by medical personnel, units and transports
The original and principal purpose of the distinctive emblems is to provide
a visible sign of the protection to which medical personnel and objects are
entitled. The protective use of the distinctive emblems is restricted to medical
units and transports, and to medical and religious personnel, equipment and
supplies within the meaning of IHL.395 Moreover, such protective use must
always be authorized and supervised by the belligerent party concerned. With
the agreement of the States involved, the protective use of the distinctive
emblems is also permitted for hospital and safety zones and localities estab-
lished pursuant to the 1949 Geneva Conventions,396 and for medical and reli-
gious personnel operating under the auspices of the UN.397

Each belligerent party must endeavour to ensure that its medical personnel,
units and transports are identifiable and take measures to facilitate their recog-
nition.398 As a general rule, medical and religious personnel must wear an armlet
displaying the distinctive emblem, and medical units and transports must fly dis-
tinctive flags or otherwise display the distinctive emblem.399 In order to be effec-
tive as a protective sign, the emblem must be comparatively large in proportion
to the protected object and visible to the enemy even at a considerable distance.
Where visible identification is not sufficient, for example owing to the means
and methods of warfare employed, the belligerent parties may additionally or
alternatively resort to other means of identification, such as distinctive light or
radio signals or electronic means of identification.400 It is important to note,
however, that the distinctive emblems and other means of identification do not,
of themselves, confer protected status but merely aim to facilitate the identifi-
cation or recognition of persons and objects entitled to protection under IHL.401
The failure or inability of medical and religious personnel, or of medical units
and transports, to display the distinctive emblem may therefore render their
recognition more difficult, but does not deprive them of their protected status.402

3. Indicative use by National Societies
The distinctive emblems may also be used as a purely indicative sign,
namely to identify persons, equipment and activities that are affiliated
to the National Societies and act in conformity with the Movement’s

395 GC I, Art. 44(1).
396 GC I and IV, Annex I, Art. 6.
397 AP III, Art. 5.
398 GC I, Art. 39; GC II, Art. 41; AP I, Art. 18(1) and (2).
399 GC I, Arts 40–43; GC II, Arts 42–43; GC IV, Arts 20(2), 21 and 22(2); AP I, Art. 18(3) and (4).
400 AP I, Art. 18(5) and (6), and Annex I, Chapter III.
401 AP I, Annex I, Art. 1(2); AP III, Preamble, para. 4.
402 ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016, op. cit. (note 63),

Art. 39; CIHL, commentary on Rule 30.

THE WOUNDED AND SICK AND THE MEDICAL MISSION 153

Fundamental Principles.403 Such indicative use must be in compliance with
national legislation and does not imply any particular protection under IHL
other than the general protection against direct attack flowing from the civil-
ian status of such personnel and their equipment. As a purely indicative sign,
the distinct ive emblem should be small in proportion to the person or object
carrying it and, during an armed conflict, the conditions under which it is
used must preclude all risk of confusion with the protective sign affording
immunity against direct military attack. In practice, indicative signs are most
commonly combined with the logo of the National Society concerned. Excep-
tionally, and only in peacetime, the purely indicative use of the distinctive
emblems may also be permitted for ambulances and aid stations providing
free medical treatment. Such use must be based on national legislation, must
be expressly permitted by the National Society of the country concerned, and
must imperatively stop on the outbreak of an international armed conflict.404

➝ On the Movement’s Fundamental Principles, see Chapter 8.I.3.

4. Use by international Red Cross organizations
International Red Cross organizations, namely the ICRC and the
International Federation, may use the emblem of the red cross at all times
and for all their activities without reservation. Both organizations use the
red cross emblem as part of their logos. Even during armed conflict, their
use of the emblem is mostly indicative in nature and merely serves to identify
personnel, premises, material and activities affiliated to the organization in
question. When circumstances and the nature of the work require, however,
the ICRC and the International Federation are also authorized to make
protective use of the red cross emblem.405 In areas affected by hostilities, the
ICRC uses large-sized emblems for protective purposes on flags or tabards,
to mark personnel, or on vehicles, ships, aircraft and buildings. Moreover,
the ICRC has a long-standing and broadly accepted practice of using its logo
for protective purposes instead of the distinctive emblem of the red cross on
a white ground.406

403 GC I, Art. 44(2).
404 GC I, Art. 44(4).
405 ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016, op.cit. (note 63), Art. 44.
406 ICRC, Study on Operational and Commercial and other Non-Operational Issues Involv-

ing the Use of the Emblems, CD/07/7.2.2, Council of Delegates of the International Red
Cross and Red Crescent Movement, Geneva, 23–24 November 2007, p. 83. Available at:
http://w w w.icrc.org/eng/assets/f iles/other/cd07_7-2-2 _eng _long _emblemstudy_f i-
nal_20nov07.pdf

154 CHAPTER 4

Logo of the ICRC

Logo of the International Federation

5. Repression of misuse
In practice, the protective value and credibility enjoyed by the distinctive
emblems depend on the proper conduct of those authorized to use them
and on effective prevention of their misuse. In view of their high credibil-
ity and protective value, effective prevention of misuse of the emblems is of
paramount importance. Accordingly, IHL prohibits any improper use of the
distinctive emblems, signs and signals provided for in the 1949 Geneva Con-
ventions and their Additional Protocols.407 Depending on the circumstances,
deliberate misuse of a distinctive emblem can even amount to perfidy and,
thereby, to a war crime.408 Any imitation or use of the distinctive emblems
for private or commercial purposes, irrespective of the underlying motive, is
also prohibited.409 States have a legal duty to ensure that their national legis-
lation regulates the use of the distinctive emblems consistent with the 1949
Geneva Conventions and their Additional Protocols, including provisions
ensuring effective prevention and punishment of any misuse.410 The ICRC
has published a Model Law Concerning the Emblem, which aims to provide
governments with useful guidance and support in this matter.411

407 Hague Regulations, Art. 23(f ); GC I, Art. 53; AP I, Art. 38(1); CIHL, Rule 59.
408 AP I, Arts 37(1)(d) and 85(3)(f ). On perfidy, see Chapter 3.IV.3.
409 GC I, Art. 53(1).
410 GC I, Art. 54; GC II, Art. 45.
411 M. Sassòli, A. Bouvier and A. Quintin, How Does Law Protect in War?, op. cit. (note 17),

Document No. 35, ICRC, Model Law Concerning the Emblem. Available at: https://case-
book.icrc.org/case-study/icrc-model-law-concerning-emblem

THE WOUNDED AND SICK AND THE MEDICAL MISSION 155

412

VI. THE MISSING AND THE DEAD

1. The right of families to know the fate of their relatives
Some of the most painful and yet most common experiences of war are the
loss of close relatives and the desperate anxiety of those waiting for news
about family members that never comes. In the words of the ICRC:

“Uncertainty about the fate of a relative is a harsh reality for
countless families in situations of armed conflict or internal violence
around the world. Parents, siblings, spouses and children are
desperately seeking lost relatives. Families and communities, not
knowing whether their loved ones are alive or dead, are unable to
put behind them the violent events that disrupted their lives. Their
anxiety continues for years after the fighting ends and peace returns.
They cannot move on to rehabilitation and reconciliation, either as

412 All ICRC documents available at: www.icrc.org

To go further (The distinctive emblems)412

• François Bugnion, Towards a Comprehensive Solution to the Question of the
Emblem, Geneva, ICRC, 4th ed., 2006, 48 pp.

• François Bugnion, Red Cross, Red Crescent, Red Crystal, Geneva, ICRC, May
2007, 120 pp.

• Jean-François Quéguiner, “Commentary on the Protocol additional to the
Geneva Conventions of 12 August 1949, and relating to the Adoption of an
Additional Distinctive Emblem (Protocol III),” IRRC, Vol. 89, No. 865, March
2007, pp. 175–207.

• ICRC, Commentary on the First Geneva Convention, 2nd ed., ICRC/Cambridge
University Press, 2016, Articles 53 and 54.

How Does Law Protect in War?

• Document No. 8, The Third Protocol Additional to the Geneva Conventions

• Document No. 35, ICRC, Model Law Concerning the Emblem

• Case No. 44, ICRC, The Question of the Emblem

• Case No. 78, Iran, Renouncing Use of the Red Lion and Sun Emblem

• Case No. 209, United Kingdom, Misuse of the Emblem

• Case No. 247, Colombia, Misuse of the Emblem

156 CHAPTER 4

individuals or as a community. Such festering wounds can harm
the fabric of society and undermine relations between groups and
nations, sometimes decades after the original events.”413

In order to ensure that people who have disappeared or died, for reasons
related to an armed conflict, are accounted for, IHL obliges belligerent parties
to search for and provide all available information on dead and missing
persons, and to ensure that mortal remains and gravesites are treated with
respect and that all available information about mortal remains and the
location of gravesites is recorded. Treaty IHL even expressly specifies that, in
their activities relating to the dead and the missing, all States and humanitar-
ian organizations involved must be guided primarily by the right of families
to know the fate of their relatives.414

2. Obligations with regard to the missing

(a) Definition of “missing persons”
International law does not expressly define “missing persons.” For the pur-
poses of IHL, the term is generally understood as including all persons,
whether civilian or military, whose whereabouts are unknown to their
relatives and who, on the basis of reliable information, have been reported
missing in connection with an armed conflict.415

(b) Duty to search for and transmit information on the missing
Belligerent parties have an obligation to search for persons reported missing
for reasons related to an armed conflict and to take all feasible measures to
account for them.416 Information concerning missing persons and requests
for information on them can be exchanged directly between the belligerent
parties or transmitted through the Protecting Power, the ICRC’s Central
Tracing Agency, or the National Societies. Where such information is not
transmitted through the ICRC, the belligerent parties must ensure it is also
provided to the Central Tracing Agency.417

413 ICRC, The Missing: ICRC Progress Report, ICRC, Geneva, August 2006, p. 1.
414 AP I, Art. 32.
415 Of course, persons can also be missing as a result of situations other than an armed conflict. For

a more comprehensive definition, see, e.g., the ICRC Model Law on the Missing (Art. 2), accord-
ing to which a missing person is “a person whose whereabouts are unknown to his/her relatives
and/or who, on the basis of reliable information, has been reported missing in accordance with
the national legislation in connection with an international or non-international armed conflict,
a situation of internal violence or disturbances, natural catastrophes or any other situation that
may require the intervention of a competent State authority”; ICRC Advisory Service on Inter-
national Humanitarian Law, Guiding Principles / Model Law on the Missing, 2009. Available
at: http://www.icrc.org/eng/assets/files/other/model-law-missing-0209-eng-.pdf

416 AP I, Art. 33(1); CIHL, Rule 117.
417 AP I, Art. 33(3).

THE WOUNDED AND SICK AND THE MEDICAL MISSION 157

(c) Preventive measures
IHL contains numerous provisions aimed at ensuring that people do not
remain unaccounted for, particularly in the event of separation, deprivation
of liberty or death.

Separation
Armed conflict often leads to the separation of family members, particu-
larly in the course of urgent evacuations or other displacements and, for
members of armed forces, owing to unexpected mili tary deployments.
Moreover, communication between family members living in different
places can be interrupted as a result of hostilities, occupation or a general
breakdown of infrastructure or power supply. People thus separated are
likely to be reported missing unless they have the facilities and means of
communication required to inform their families of their whereabouts. A
particular problem in this regard is that of unaccompan ied children sep-
arated from their families while fleeing the fighting, or because they were
forcibly recruited, detained or even unlawfully adopted.

Accordingly, IHL stipulates that all persons in territory controlled by a bel-
ligerent party must be enabled to exchange news of a strictly personal nature
with their family members, wherever they may be, if necessary through an
intermediary such as the Central Tracing Agency run by the ICRC.418 More-
over, belligerent parties must facilitate enquiries made by members of dis-
persed families with a view to re-establishing family links and, if possible, to
reunification. In particular, they must encourage the work of inter national
organizations specialized in this area, such as the ICRC.419 Belligerent
parties must also ensure that orphaned or otherwise unaccompanied chil-
dren under 15 are not left to fend for themselves,420 that all children under
the age of 12 are equipped with identity discs or similar means,421 and that
children evacuated to neutral countries for the duration of the conflict are
duly identified and notified to the ICRC’s Central Tracing Agency.422

Deprivation of liberty
Persons deprived of their liberty, particularly if held in solitary confinement
or in a secret place of detention, are likely to be reported missing if they are
not permitted to communicate with the world outside and if their detention,
and any subsequent transfer, death or release, are not adequately recorded,

418 GC IV, Art. 25.
419 GC IV, Art. 26.
420 GC IV, Art. 24(1).
421 GC IV, Art. 24(3).
422 AP I, Art. 78.

158 CHAPTER 4

registered and notified.423 IHL therefore obliges the detaining power to
forward information on any captured, detained, wounded, sick or ship-
wrecked persons who have fallen into its power to their families and author-
ities. In particular, the detaining power must formally notify the detention of
each protected person, as well as any transfer, release or death, to his or her
country of origin or residence,424 forward a capture or internment card for
each detainee to the family and the Central Tracing Agency,425 and respond
to all enquiries about protected persons, except where this may be detrimental
to the persons concerned or their families.426 Throughout their detention or
internment, persons deprived of their liberty also have the right to correspond
with their family.427 In practice, a very powerful means of preventing persons
deprived of their liberty from remaining unaccounted for is the ICRC’s right
to conduct visits to prisoners of war and civilians interned or detained for
reasons related to an armed conflict.428 During its visits, the ICRC strives to
ensure not only that all detainees benefit from humane treatment and ade-
quate conditions of detention, but also that the identities of all detainees are
recorded and communicated to their next-of-kin along with Red Cross mes-
sages containing family news.

Death
Persons killed for reasons related to an armed conflict are likely to be
reported missing if the necessary measures are not taken to search for
them, to collect and identify their remains and to notify the appropriate
author ities. Thus, members of armed forces are more likely to be “missing
in action” if they do not carry identity discs or equivalent means of identifi-
cation as required by IHL.429 Civilians who are killed in an armed conflict,
whether in the course of the hostilities or for other reasons, are less likely
to have identification documents on them and often remain unaccounted
for if their bodies are abandoned, hastily buried, or even burned. Their
successful identification therefore largely depends on whether their mortal

423 In addition, Article 2 of the International Convention for the Protection of All Persons
from Enforced Disappearance, 20 December 2006, defines “enforced disappearance” as
“the arrest, detention, abduction or any other form of deprivation of liberty by agents of
the State or by persons or groups of persons acting with the authorization, support or
acquiescence of the State, followed by a refusal to acknowledge the deprivation of liberty
or by concealment of the fate or whereabouts of the disappeared person, which place such
a person outside the protection of the law.”

424 GC I, Art. 16; GC II, Art. 19; GC III, Arts 122 and 123; GC IV, Arts 136–138 and 140; AP
I, Art. 33(2); CIHL, Rule 123.

425 GC III, Art. 70; GC IV, Art. 106.
426 GC III, Art. 122(7); GC IV, Art. 137(1) and (2).
427 GC III, Art. 71; GC IV, Art. 107; CIHL, Rule 125.
428 GC III, Art. 126; GC IV, Art. 143; CIHL, Rule 124(A).
429 GC III, Art. 17(3).

THE WOUNDED AND SICK AND THE MEDICAL MISSION 159

remains are carefully examined and buried in properly marked graves, as
discussed in the next section.

3. Obligations with regard to the dead

(a) Search for and recovery of the dead
Parties to a conflict must, at all times, and particularly after an engage-
ment, take all possible measures to search for the dead and collect and
evacuate their remains without delay and without distinction.430 In par-
ticular, they are encouraged to agree on the deployment of search teams,
which must be respected and protected while employed exclusively for that
purpose.431

(b) Identification and forwarding of information
It would not be realistic to expect belligerent parties to systematically iden-
tify every single person killed in the context of an armed conflict. Never-
theless, they have a legal duty to record any information that is available
to them and that may help identify the dead bodies in their possession.432
All information so collected, along with death certificates or duly authenti-
cated lists of the dead, must be forwarded to the adverse party through the
intermediary of the National Information Bureau and the ICRC’s Central
Tracing Agency.433 The belligerents must also forward one half of every
double identity disc, last wills, money or any other documents and articles
of an intrinsic or sentimental value found on the dead.434

(c) Decent burial and marking of graves
Parties to a conflict must take all possible measures to ensure that the
remains of the deceased are respected and that they are neither mutilated
nor pillaged or despoiled.435 Burials, whether on land or at sea, must be
preceded by a careful examination of the bodies, with a view to confirming
death, enabling a report to be made and, where necessary, establishing the
identity of the deceased. Where available, one half of the double identity
disc should remain on the body to facilitate identification in case of sub-
sequent exhumation. In all cases, the dead must be honourably interred,
if possible according to the rites of their religion. Bodies may not be cre-
mated except for imperative reasons of hygiene or if required by the religion
of the deceased.436 Gravesites and individual graves must be respected,

430 GC I, Art. 15(1); GC II, Art. 18(1); GC IV, Art. 16(2); CIHL, Rule 112.
431 AP I, Art. 33(4).
432 GC I, Art. 16; GC II, Art. 19; AP I, Art. 33(2); CIHL, Rule 116.
433 GC I, Art. 16(2) and GC II, Art. 19(2).
434 GC I, Art. 16(3); GC II, Art. 19(3); GC IV, Art. 129; CIHL, Rule 114.
435 GC I, Art. 15; GC II, Art. 18; GC IV, Art. 16; AP I, Art. 34(1); CIHL, Rule 113.
436 GC I, Art. 17; GC II, Art. 20; GC III, Art. 120(3)-(5); GC IV, Art. 130(1) and (2); CIHL, Rule 115.

160 CHAPTER 4

properly maintained and marked so that they can always be found. In order
to facilitate subsequent exhumations and to ensure the identification of
bodies and their possible transportation to the home country, belligerent
parties are required to establish an official graves registration service at the
outset of every armed conflict.437

(d) Repatriation of mortal remains
At the request of the home country or the families of the deceased, the
State in whose territory the graves are situated must facilitate the repatria-
tion of mortal remains and of personal effects found on the bodies.438 The
belligerents should also conclude agreements in order to facilitate access to
the gravesites for relatives of the deceased and for representatives of official
graves registration services.439 Where mortal remains are not repatriated,
the graves can be maintained at the expense of the country of origin or,
after a period of five years, become subject to the relevant laws of the terri-
torial State relating to cemeteries and graves.440 In any case, the territorial
State may not exhume the remains of the deceased except for the purposes
of repatriation to their home country or in case of overriding public neces-
sity, including cases of medical and investigative necessity. In all cases of
exhumation, the home country must be notified and the mortal remains
treated with respect.441

437 GC I, Art. 17; GC III, Art. 120(6); GC IV, Art. 130(3); AP I, Art. 34(1); CIHL, Rule 116.
438 AP I, Art. 34(2)(c); CIHL, Rule 114.
439 AP I, Art. 34(2)(a).
440 AP I, Art. 34(3).
441 AP I, Art. 34(4).

THE WOUNDED AND SICK AND THE MEDICAL MISSION 161

442 443 444

➝ For more information on the Central Tracing Agency, see-
Chapter 8.II.3.

442 GC I, Art. 16; GC II, Art. 19; GC III, Art. 122; GC IV, Arts 136–139.
443 GC I, Art. 16; GC II, Art. 19; GC III, Art. 123; GC IV, Art. 140.
444 GC I, Art. 16; GC II, Art. 19; GC III, Art. 123; GC IV, Arts 25 and 140; AP I, Arts 33(3) and 78(3).

Textbox 6: National Information Bureaux and the Central Tracing
Agency

National Information Bureaux442
In international armed conflicts, each party to the conflict must establish a National Infor-
mation Bureau with the following tasks:

• to centralize all information on the dead, the wounded, the sick, the shipwrecked,
prisoners of war and other protected persons deprived of their liberty, and chil-
dren whose identity is in doubt, and to provide this information to the appropri-
ate authorities via the Protecting Power and the ICRC’s Central Tracing Agency;

• to receive and respond to all requests for information on the fate of such persons
via the Protecting Power and the Central Tracing Agency.

Central Tracing Agency443
The primary purpose of the Central Tracing Agency, which is run by the ICRC, is to
trace missing persons, unaccompanied children and all those who are in the power of
the enemy, to notify their country of origin, or allegiance, of their whereabouts and to
restore family links ruptured by war.444 The Agency collects, centralizes and forwards
any information that might help to identify and reconnect persons in particular need
of protection in both international and non-international armed conflicts. It arranges
for the exchange of family correspondence when the usual means of communication
have been disrupted, for transfers and repatriations of individuals, and for the reunifi-
cation of dispersed families. In fulfilling these tasks, the Agency may also issue certain
documents, such as temporary travel documents for persons without identity papers
and certificates of captivity, hospitalization or death for former detainees, prisoners of
war or their rightful claimants. The Agency usually works in close cooper ation with
the National Societies. Belligerent parties must facilitate its activities to the greatest
extent possible.

162 CHAPTER 4

445

VII. SPECIFIC ISSUES ARISING
IN NON-INTERNATIONAL ARMED CONFLICTS

The protection of the wounded, the sick and the shipwrecked, of medical
and religious personnel and of medical units and transports is just as
important in non-international armed conflicts as it is in international
armed conflicts. Common Article 3 requires that the wounded and sick
be collected and cared for, and that persons rendered hors de combat by
sickness or wounds be treated humanely, just like all persons not taking a
direct part in hostilities.446 Additional Protocol II, which develops and sup-
plements the protection provided by common Article 3, contains an entire
section with provisions devoted to the protection of the wounded, the sick
and the shipwrecked, most of which are recognized as having attained cus-
tomary status for any situation of non-international armed conflict.

445 All ICRC documents available at: www.icrc.org
446 GC I–IV, common Art. 3. See Chapters 5 and 6.

To go further (The missing and the dead)445

• Monique Crettol and Anne-Marie La Rosa, “The missing and transitional justice:
The right to know and the fight against impunity,” IRRC, Vol. 88, No. 862, June
2006, pp. 355–362.

• “The Missing,” IRRC, No. 905, 2018.

• ICRC, Operational Best Practices Regarding the Management of Human Remains
and Information on the Dead by Non-Specialists, ICRC, Geneva, 2004, 53 pp.

• ICRC Advisory Service on International Humanitarian Law, Missing Persons and
their Families: Recommendations for Drafting National Legislation, 2003. Available
at: http://www.icrc.org/eng/assets/files/other/missing_and_recommendations_
missing.pdf

• ICRC Advisory Service on International Humanitarian Law, Guiding Principles /
Model Law on the Missing, 2009. Available at: http://www.icrc.org/eng/assets/files/
other/model-law-missing-0209-eng-.pdf

How Does Law Protect in War?

• Document No. 34, ICRC, Tracing Service

• Case No. 134, Israel, Evacuation of Bodies in Jenin

• Case No. 206, Bosnia and Herzegovina, Release of Prisoners of War and Trac-
ing Missing Persons After the End of Hostilities

THE WOUNDED AND SICK AND THE MEDICAL MISSION 163

1. Protection of the wounded, the sick and the shipwrecked
Whenever circumstances permit, and particularly after an engagement, all
possible measures must be taken without delay to search for and collect the
wounded, the sick and the shipwrecked, to protect them against pillage and
ill-treatment, and to ensure that they are ad equately cared for.447 All the
wounded, sick and shipwrecked must be respected, protected and treated
humanely at all times, regardless of whether or not they have taken part
in the armed conflict. They must receive the medical care and attention
required by their condition to the fullest extent practicable and with the
least possible delay, and without any distinction between them for any
reasons other than medical.448

2. Protection of medical and religious personnel
Medical personnel exclusively assigned to medical duties and religious
personnel exclusively assigned to religious duties must be respected and
protected at all times and must be granted all available help for the per-
formance of their duties. They lose their protection if they commit, outside
their humanitarian function, acts harmful to the enemy.449

3. Protection of medical ethics
Medical and religious personnel may not be compelled to carry out tasks that
are not compatible with their humanitarian mission, or – for the former – to
give priority to any person except on medical grounds.450 More generally, no
person engaged in medical activities may be compelled to perform acts con-
trary to medical ethics or to rules designed for the benefit of the wounded and
sick, nor may anyone be compelled to refrain from acts required by such rules.
In no circumstances may any person be punished for carrying out medical
activities compatible with medical ethics.451 Furthermore, as a general rule,
the confidentiality of medical information on the wounded and sick and their
treatment must be respected, and no person engaged in medical activities may
be penalized for refusing or failing to provide such information. Given that
most non-international armed conflicts are fought within the jurisdiction of
a single State, however, the confidentiality of medical information remains
subject to contrary obligations under domestic law.452

447 AP II, Art. 8; CIHL, Rules 109–111.
448 AP II, Art. 7; CIHL, Rule 110.
449 AP II, Art. 9(1); CIHL, Rules 25 and 27.
450 AP II, Art. 9.
451 AP II, Art. 10; CIHL, Rule 26.
452 AP II, Art. 10.

164 CHAPTER 4

4. Protection of medical units and transports
Medical units and transports exclusively assigned to medical purposes must
be respected and protected at all times and may not be directly attacked. They
lose their protection only when they are used to commit hostile acts outside
their humanitarian function and after a warning setting a reasonable time
limit has been disregarded.453

5. The distinctive emblem
IHL governing non-international armed conflicts also provides that the dis-
tinctive emblems of the red cross, red crescent and red crystal on a white
ground must be respected in all circumstances and that any improper use
thereof is prohibited. In particular, attacks directed against medical and reli-
gious personnel and objects displaying the distinctive emblems of the 1949
Geneva Conventions in conformity with international law are prohibited.454

6. The dead and the missing
Whenever circumstances permit, and particularly after an engagement, the
belligerent parties must take all possible measures without delay to search
for and recover the dead and prevent their bodies from being pillaged or
despoiled. Each party to the conflict must, with a view to the identification
of the dead, record all available information before disposing of the bodies
and mark the location of the graves. The dead must be disposed of in a respect-
ful manner and their graves respected and properly maintained.455 Each
party to the conflict must take all feasible measures to account for persons
reported missing as a result of the conflict and must provide their family
members with any information it has on their fate.456

457

453 AP II, Art. 11; CIHL, Rules 28 and 29.
454 AP II, Art. 12; CIHL, Rule 30.
455 AP II, Art. 8; CIHL, Rules 112, 113, 115 and 116.
456 CIHL, Rule 117.
457 All ICRC documents available at: www.icrc.org

To go further (Specific issues arising in non-international armed conflicts)457

• “Syria: Timely access to health-care services a matter of life or death,”
ICRC operational update. Available at http://www.icrc.org/eng/resources/
documents/update/2013/03-01-syria-health-care.htm

THE WOUNDED AND SICK AND THE MEDICAL MISSION 165

How Does Law Protect in War?

• Case No. 194, Sri Lanka, Jaffna Hospital Zone

• Case No. 196, Sri Lanka, Conflict in the Vanni, paras 17–22

Textbox 7: The Health Care in Danger project
Violence against health-care personnel and facilities, medical transports and patients
is one of the most serious humanitarian challenges in contemporary armed conflicts.
A study conducted by the ICRC based on data collected in 16 countries from 2008
to 2010 showed the manifold patterns of violence that hinder the delivery of health
care, ranging from direct attacks on patients and on medical personnel and facilities –
including looting and kidnapping – to arrests and denial of access to health care. For
example, urban fighting may prevent health-care personnel from reaching their place
of work, first-aiders may be unnecessarily delayed at checkpoints, soldiers may forcibly
enter a hospital to look for enemies or shield themselves from attack, and ambulances
may be targeted or illegally used to carry out attacks. Whatever the context, poor
secur ity conditions in many parts of the world mean that the wounded and sick do not
get the medical attention to which they are entitled. This initial study was instrumental
in establishing the danger to, and violence perpetrated against, health-care delivery as
an issue to be addressed comprehensively rather than on a case-by-case basis. As a con-
sequence, the ICRC began to systematically record violent incidents affecting the deliv-
ery of health care. The vast majority of the cases recorded involved violence against
local health-care providers, not international humanitarian players. This underscores
the importance of cooperation not only between the various components of the Move-
ment, but also between the latter and other relevant stakeholders, such as government
health ministries and services, and international and non-governmental organizations
with health-related mandates and activities. Accordingly, the Health Care in Danger
project was conceived as an ICRC-led Movement initiative aimed at improving the
efficiency and delivery of effective and impartial health care in armed conflicts and
other emer gencies. The project focuses on strengthening protection for the wounded
and sick by raising public awareness and advocating the adoption of specific measures
designed to help ensure safe access to effective and impartial health care. In doing this,
the ICRC and National Societies work with States, non-governmental organizations,

166 CHAPTER 4

the larger health-care community and other stakeholders to develop and adopt prac-
tical measures that can be implemented in the field by decision-makers, humanitarian
organizations and health professionals.

• For further details, see ICRC, Health Care in Danger: A Sixteen-Country
Study, ICRC, Geneva, June 2011. Available at: https://www.icrc.org/eng/
assets/files/reports/4073-002-16-country-study.pdf

• See also 31st International Conference of the Red Cross and Red Crescent,
Resolution 5 – Health care in danger: Respecting and protecting health care,
2011. Available at: https://www.icrc.org/eng/resources/documents/resolu-
tion/31-international-conference-resolution-5-2011.htm

• See also ICRC, Health Care in Danger: Making the Case, ICRC, Geneva, 2011,
24 pp.

• See also “Health Care in Danger: It’s a Matter of Life & Death,” webpage,
ICRC. Available at: http://healthcareindanger.org/

Chapter 5
Detention and internment

United States internment facility at Guantanamo Bay Naval Station in Cuba, 2014. An ICRC
delegate shakes hands with a detainee after giving him a Red Cross message.

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170 CHAPTER 5

Structure
I. The relevance of “status” in the context of detention
II. Internment of prisoners of war
III. Internment and detention of civilians
IV. Specific issues arising in non-international armed conflicts

458

458 All ICRC documents available at: www.icrc.org

In a nutshell

➝ All persons deprived of their liberty for reasons related to an
armed conflict must be treated humanely and must be afforded
appropriate conditions of detention, the medical care they re-
quire, and the judicial or procedural guarantees corresponding
to their status.

➝ Prisoners of war may be interned without any particular judi-
cial or administrative procedure, but must be released and re-
patriated immediately after the end of active hostilities.

➝ Other security internees are entitled to a periodic review and
must be released as soon as the reasons justifying their intern-
ment no longer exist.

➝ Persons held by non-State armed groups, even if those groups
are unable to exercise territorial control, must always be treated
humanely and must have their basic needs provided for, at least
to the same extent as the group members themselves.

To go further458

• In Detention: The Human Way, film, ICRC, 2010. Available at: https://www.
youtube.com/watch?v=ylZzp7Mxz10

• ICRC e-learning module, Protected persons and objects, Chapter V: Prisoners
of war and other detainees. Available at: http://www.icrcproject.org/elearning/
en/ihl/M6/index.html

• Alain Aeschlimann, “Protection of detainees: ICRC action behind bars,”
IRRC, Vol. 87, No. 857, March 2005, pp. 83–122.

• “Detention: Addressing the human cost,” IRRC, Vol. 98, No. 903, December 2016.

DETENTION AND INTERNMENT 171

Apart from wounds, sickness and death, situations of armed conflict regu-
larly entail the detention or internment of thousands or even millions of sol-
diers and civilians by adverse parties. Separated from their families and in
the power of hostile authorities, persons deprived of their liberty for reasons
related to armed conflict often live in extremely difficult circumstances,
exposed to uncertainty, anxiety, tension and, in the worst case, abuse. Some
of the grimmest atrocities in the history of warfare were committed against
persons detained in the concentration camps of World War II, the rape
camps in Bosnia-Herzegovina, and countless other places where prisoners
have been tortured, abused and murdered with impunity. It is therefore not
surprising that a large portion of IHL is devoted to protecting the lives and
dignity of prisoners of war, civilian internees and other persons deprived of
their liberty for reasons related to an armed conflict.

I. THE RELEVANCE OF “STATUS” IN THE CONTEXT
OF DETENTION

In the context of detention, personal status under IHL serves to distinguish
categories of person that are subject to different regimes in terms of the legal
basis for and the conditions of their detention, their treatment, their judicial
or procedural rights, the conditions governing their release, and the ICRC’s
entitlement to conduct visits. In situations of international armed conflict, the
two categories of person deprived of their liberty that benefit from a distinct
status are prisoners of war and persons protected under the Fourth Geneva
Convention. Other persons detained during an armed conflict, international
or non-international, do not enjoy any particular status; however, they do
benefit from fundamental guarantees ensuring both humane treatment and
judicial guarantees or other procedural safeguards.

➝ On the relevance of status during the conduct of hostilities, see
Chapter 3.I.1.c.

1. Combatants

(a) Combatant status and privilege
As we saw in Chapter 3, IHL governing international armed conflicts affords
combatant status to only two categories of person: (a) members of the armed
forces of a party to an international conflict, except medical and religious per-
sonnel,459 and (b) participants in a levée en masse.460 Persons involved in the

459 AP I, Art. 43(2).
460 Hague Regulations, Art. 2.

172 CHAPTER 5

fighting who fall outside these two categories, such as mercenaries461 or civil-
ians taking a direct part in hostilities,462 are not entitled to combatant status.

➝ For the definition of “combatant,” “armed forces”
and “levée en masse,” see Chapter 3.I.1.

For the purposes of detention, the most important consequence of com-
batant status is the privilege of combatancy, which affords combatants “the
right to participate directly in hostilities” on behalf of a party to an inter-
national armed conflict.463 This means that combatants, as legitimate repre-
sentatives of the belligerent parties, enjoy immunity from prosecution for
lawful acts of war, that is to say, for hostile acts carried out in conformity
with IHL. At the same time, combatants also have a duty to respect IHL.464
They do not enjoy immunity from prosecution for violations of IHL that are
punishable as a matter of international criminal law or under the national
law of the capturing State.465 The privilege of combatancy does not exist in
IHL governing non-international armed conflict.

➝ On the absence of combatant status in non-international armed
conflicts, see Chapter 3.I.1.c. and Section I.1.b. below.

➝ On the specific issues arising in relation to detention in situ ations
of non-international armed conflict, see Section IV below.

(b) “Unprivileged” or “unlawful” combatants
As we saw in Chapter 3, civilians directly participating in hostilities and
others supporting the enemy’s war effort who do not enjoy the privilege of
combatancy are sometimes described as “unprivileged” or “unlawful” com-
batants and said to fall outside the categories of person protected by the 1949
Geneva Conventions. Most notably, in the aftermath of the terrorist attacks
of 11 September 2001, the United States interned hundreds of persons as
“unlawful combatants” in detention centres at the Guantanamo Bay Naval
Station in Cuba and elsewhere, initially without affording them any status or
protection under the 1949 Geneva Conventions.

In this discussion of detention and internment, it must be reiterated that
the concepts of “unprivileged” or “unlawful” combatant are not technical

461 AP I, Art. 47(1).
462 AP I, Art. 51(3).
463 AP I, Art. 43(2).
464 AP I, Art. 44(2).
465 On the obligation of the detaining State to take repressive measures, see Chapter 7.II.2.f.

DETENTION AND INTERNMENT 173

IHL terms and do not create any specific status distinct from those already
foreseen in IHL. From a legal perspective, the classification of persons cap-
tured by a belligerent party as “unprivileged” or “unlawful” combatants
cannot deprive them of the humanitarian protection afforded by IHL. The
concept of “unprivileged combatant,” properly understood, only implies that
the person in question does not have the “right” to directly participate in
hostilities derived from the privilege of combatancy, which means that he or
she can be prosecuted for any act or omission that is punishable under the
applicable national law, even if such conduct does not violate IHL. This does
not, however, require or justify the creation of a status and detention regime
distinct from those foreseen in IHL.

Even more problematic than the concept of “unprivileged” combatant is that
of “unlawful” combatant, which implies not only the absence of the privilege
of combatancy, but also inherent illegality; it should therefore be used with
even greater caution. Even though IHL limits the “right” to directly partici-
pate in hostilities to privileged combatants, it does not prohibit anyone from
taking up arms in a situation of armed conflict and from being an “unpriv-
ileged combatant.” IHL simply requires that all those doing so comply with
its rules on the conduct of hostilities. States are free, of course, to prohibit
persons not entitled to the privilege of combatancy from directly participat-
ing in hostilities and, thus, to turn combatancy that is “unprivileged” as a
matter of IHL into combatancy that is “unlawful” as a matter of national law.
Whatever approach is taken in national legislation, however, the concept of
“unlawful combatant” cannot be derived from IHL and does not give rise to
or terminate any particular status under that body of law.

Just as is the case in the context of hostilities, the use of the terms “unprivi-
leged combatant” and “unlawful combatant” in the context of conflict-related
detention has contributed to serious misunderstandings and abuse. In the
present discussion, therefore, the term “combatant” will be used in its tech-
nical meaning only, namely as referring to persons entitled to the privilege of
combatancy in situations of international armed conflict.

➝ On the relevance of the concepts of “unprivileged” and “unlawful”
combatant in the conduct of hostilities, see Chapter 3.I.1.d.

2. Prisoners of war
Combatants who have fallen into the power of an adverse party to a conflict
are prisoners of war, regardless of whether they are members of the regular or

174 CHAPTER 5

irregular armed forces or participants in a levée en masse.466 In the case of
irregular armed forces, the Third Geneva Convention ties their entitlement to
prisoner-of-war status to collective fulfilment of the same four conditions that
the Hague Regulations require for combatant status, namely: (1) to be com-
manded by a person responsible for his or her subordinates; (2) to have a fixed
distinctive sign recognizable at a distance; (3) to carry arms openly; and (4) to
conduct their operations in accordance with the laws and customs of war.467
Under Additional Protocol I, the requirements of visible distinction from the
civilian population and respect for IHL are no longer considered to be collec-
tive prerequisites for the collective entitlement to prisoner-of-war status of an
irregular armed force or group. Rather, combatants have an individual obli-
gation to visibly distinguish themselves from the civilian population during
their military operations; failure to do so may entail loss of their individual
entitlement to prisoner-of-war status.468 Also entitled to prisoner-of-war
status, but not to the privilege of combatancy, are civilians formally author-
ized to accompany the armed forces, such as civilian crew members of mili-
tary aircraft, war correspondents, private contractors, and crew members of
the merchant marine or civilian aircraft of the belligerent parties.469 Medical
and religious personnel who have fallen into the hands of an adverse party are
not considered as prisoners of war regardless of whether they are civilians or

466 Hague Regulations, Arts 1 and 2; GC III, Art. 4(A)(1), (2), (3) and (6); AP I, Art. 44(1).
467 GC III, Art. 4(A)(2).
468 AP I, Arts 44(3) and 46; CIHL, Rule 106.
469 GC III, Art. 4(4) and (5).

members of the armed forces.470 They may be retained only to the extent
required to meet the medical and spiritual needs of prisoners of war, and are
not considered as being interned or detained stricto sensu.471 Nevertheless,
retained personnel are entitled, as a minimum, to the same benefits and pro-
tection as prisoners of war.472

Two particular categories of person must also be treated as prisoners of war:
demobilized military personnel in occupied territory and military personnel
interned in a neutral country. The first case covers former military personnel
residing in occupied territory who are interned by the occupying power for
security reasons because of their former membership in the opposing armed
forces and their continued allegiance to an opposing belligerent in an ongoing
armed conflict. Although such former military personnel must be regarded
as civilians, they are treated as prisoners of war once they are interned.473 The
second case concerns military internees in neutral countries. Neutral States
receiving on their territory members of the armed forces of belligerent parties,
including the wounded and sick, are obliged to intern such personnel and to
provide them, as a minimum, with the humanitarian benefits and protection
afforded to prisoners of war.474

The most important consequence of prisoner-of-war status is that, in prin-
ciple, prisoners of war may be interned by the detaining power until the end
of active hostilities without any particular judicial or administrative pro-
cedure.475 The internment of prisoners of war is not punitive but preventive
in nature. It essentially aims to keep hostile combatants off the battlefield
under humane conditions and to protect them from the dangers resulting
from ongoing hostilities. During their internment, prisoners of war benefit
from a detailed regime of rights and protections spelled out, most notably,
in the Third Geneva Convention.

3. Persons protected under the Fourth Geneva Convention
As a general rule, persons not qualifying for prisoner-of-war status are
covered by the Fourth Geneva Convention “on the protection of civilian
persons in time of war.” Contrary to its title, the protection of the Fourth
Geneva Convention does not depend on civilian status. The Convention pro-
tects not only (and not all) civilians, but essentially all persons not entitled

470 GC I, Art. 28(2).
471 GC I, Arts 28(1) and (3), and 30; GC II, Art. 37(2) and (3).
472 GC I, Art. 28(2); GC III, Art. 33(1).
473 GC III, Art. 4(B)(1).
474 GC III, Art. 4(B)(2); Hague Convention No V, Art. 11.
475 GC III, Art. 118(1); CIHL, Rule 128 A.

Field exercise: escorting a prisoner of war, Russia, 2002.

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members of the armed forces.470 They may be retained only to the extent
required to meet the medical and spiritual needs of prisoners of war, and are
not considered as being interned or detained stricto sensu.471 Nevertheless,
retained personnel are entitled, as a minimum, to the same benefits and pro-
tection as prisoners of war.472

Two particular categories of person must also be treated as prisoners of war:
demobilized military personnel in occupied territory and military personnel
interned in a neutral country. The first case covers former military personnel
residing in occupied territory who are interned by the occupying power for
security reasons because of their former membership in the opposing armed
forces and their continued allegiance to an opposing belligerent in an ongoing
armed conflict. Although such former military personnel must be regarded
as civilians, they are treated as prisoners of war once they are interned.473 The
second case concerns military internees in neutral countries. Neutral States
receiving on their territory members of the armed forces of belligerent parties,
including the wounded and sick, are obliged to intern such personnel and to
provide them, as a minimum, with the humanitarian benefits and protection
afforded to prisoners of war.474

The most important consequence of prisoner-of-war status is that, in prin-
ciple, prisoners of war may be interned by the detaining power until the end
of active hostilities without any particular judicial or administrative pro-
cedure.475 The internment of prisoners of war is not punitive but preventive
in nature. It essentially aims to keep hostile combatants off the battlefield
under humane conditions and to protect them from the dangers resulting
from ongoing hostilities. During their internment, prisoners of war benefit
from a detailed regime of rights and protections spelled out, most notably,
in the Third Geneva Convention.

3. Persons protected under the Fourth Geneva Convention
As a general rule, persons not qualifying for prisoner-of-war status are
covered by the Fourth Geneva Convention “on the protection of civilian
persons in time of war.” Contrary to its title, the protection of the Fourth
Geneva Convention does not depend on civilian status. The Convention pro-
tects not only (and not all) civilians, but essentially all persons not entitled

470 GC I, Art. 28(2).
471 GC I, Arts 28(1) and (3), and 30; GC II, Art. 37(2) and (3).
472 GC I, Art. 28(2); GC III, Art. 33(1).
473 GC III, Art. 4(B)(1).
474 GC III, Art. 4(B)(2); Hague Convention No V, Art. 11.
475 GC III, Art. 118(1); CIHL, Rule 128 A.

Field exercise: escorting a prisoner of war, Russia, 2002.

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176 CHAPTER 5

to prisoner-of-war status “who, at a given moment and in any manner what-
soever, find themselves, in case of a conflict or occupation, in the hands of a
Party to the conflict or Occupying Power of which they are not nationals.”476
Thus, beyond the general civilian population, the Fourth Geneva Conven-
tion’s protective scope also extends to civilians who have directly partici-
pated in hostilities, mercenaries, and even members of the armed forces who
have lost their entitlement to prisoner-of-war status as a result of espionage
or because they failed to distinguish themselves from the civilian population
as required by IHL. The only persons not entitled to prisoner-of-war status
whom a belligerent State is not obliged to protect under the Fourth Geneva
Convention are its own nationals and, provided that it maintains normal
diplomatic relations with the State of nationality, the nationals of neutral
States within its territory and the nationals of co-belligerent States.477

The exclusion of nationals can prove to be particularly problematic in wars
of national liberation that are governed by the rules applicable to inter-
national armed conflicts but in which, formally, the adversaries may well
have the same nationality.478 Finally, nationals of States not party to the
Fourth Geneva Convention are also excluded from its protection. In view of
the quasi-universal ratification of the 1949 Geneva Conventions and of the
customary nature of their provisions, however, this reservation can be safely
discarded as irrelevant today.

4. Other persons deprived of their liberty
As has been shown, the vast majority of persons who have fallen into the
power of an adverse party to an international armed conflict qualify either
as prisoners of war or as protected persons under the Fourth Geneva Con-
vention. But even those exceptional cases that do not fulfil the nationality
criteria of the Fourth Geneva Convention are not deprived of the protection
of IHL. According to Additional Protocol I, all persons affected by a situation
of international armed conflict who are in the power of a belligerent party
and who do not benefit from more favourable treatment under IHL must
be treated humanely in all circumstances, and must benefit, as a minimum,
from a number of fundamental guarantees, including judicial guarantees,
that have become part of customary international law.479 Moreover, there
is a growing consensus that all persons deprived of their liberty by a bel-
ligerent State fall within the jurisdiction of that State and therefore benefit

476 GC IV, Art. 4(1) and (4).
477 GC IV, Art. 4(2). However, see the interpretation of “nationality” by the ICTY in The

Prosecutor v. Dusko Tadić, op. cit. (note 69), paras 163–169.
478 AP I, Art. 1(4).
479 See, most notably, AP I, Art. 75, and CIHL, Rules 87–105.

DETENTION AND INTERNMENT 177

from the protection of international human rights law. Consequently, in
contem porary situations of international armed conflict, there is no room
whatsoever for the argument that certain categories of person deprived of
their liberty fall outside the protection of the law, regardless of whether they
are called “terrorists,” “traitors” or “unlawful combatants.”

480

480 All ICRC documents available at: www.icrc.org

To go further (The relevance of “status” in the context of detention)480

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 6: Combatants and Prisoners of
war, sections I and II, pp. 178–185.

• Emily Crawford, The Treatment of Combatants and Insurgents under the Law
of Armed Conflict, Oxford University Press, Oxford, 2010, 238 pp.

• Charles H.B. Garraway, “Combatants: Substance or semantics?,” in Michael
Schmitt and Jelena Pejic (eds), International Law and Armed Conflict:
Exploring the Faultlines, Essays in Honour of Yoram Dinstein, Martinus
Nijhoff, Leiden/Boston, 2007, pp. 317–335.

• Knut Dörmann, “The legal situation of “unlawful/unprivileged combatants,”
IRRC, Vol. 85, No. 849, March 2003, pp. 45–74.

• Frederik Naert, “Detention in peace operations: The legal framework and
main categories of detainees,” Revue de droit militaire et de droit de la guerre,
Vol. 1–2, No. 45, 2006, pp. 51–78.

• Gregory P. Noone et al., “Prisoners of war in the 21st century: Issues in
modern warfare,” Naval Law Review, Vol. 50, 2004, pp. 1–69.

• Marco Sassòli, “The status of persons held in Guantánamo under international
humanitarian law,” Journal of International Criminal Justice, Vol. 2/1, March
2004, pp. 96–106.

• “Security Detention,” ICRC webpage. Available at: https://www.icrc.org/en/
war-and-law/contemporary-challenges-for-ihl/security-detention

How Does Law Protect in War?

• Case No. 126, Israel, Military Prosecutor v. Kassem and Others

• Case No. 261, United States, Status and Treatment of Detainees Held in
Guantanamo Naval Base

• Case No. 286, The Conflict in Western Sahara

178 CHAPTER 5

II. INTERNMENT OF PRISONERS OF WAR

1. Determination and presumption of status
As stated above, persons who have fallen into the power of an adverse party
to a conflict are entitled to prisoner-of-war status if they qualify as:

(a) combatants (members of the armed forces or participants
in a levée en masse);481

(b) civilians formally authorized to accompany the armed forces;482
(c) demobilized military personnel in occupied territory;483
(d) military personnel interned in neutral territory.484

In the reality of contemporary armed conflicts, the presence of a growing
variety of irregular weapon-bearers makes it increasingly difficult to relia-
bly determine the status and allegiance of captured persons.485 IHL therefore
provides that persons having taken part in hostilities and having fallen into
the power of an adverse party must be presumed to be prisoners of war, if
they either claim or appear to be entitled to prisoner-of-war status, or if the
party on which they depend claims such status on their behalf.486 Should any
doubt arise as to whether such persons are entitled to prisoner-of-war status,
they must be afforded such status until such time as their status has been
determined by a competent tribunal.487 Moreover, persons being tried by an
adverse party for offences arising out of the hostilities have the right to assert
their entitlement to prisoner-of-war status and to have it adjudicated by a
judicial tribunal, whenever possible before the trial for the offence.488

Treaty IHL does not specify which bodies can be regarded as “competent tri-
bunals” for the determination of individual entitlement to prisoner-of-war
status. Thus, in contrast to the judicial tribunals required in criminal cases,
the establishment of military commissions by the executive branch appears
to be acceptable for this purpose. As a minimum, however, any such compe-
tent tribunal must meet the requirements of neutrality and independence,
and guarantee fundamental procedural safeguards, all of which is inher-
ent in the concepts of due process and the rule of law. Finally, in order to
shield prisoners of war from pressure and to ensure the inviolability of their

481 GC III, Art. 4(A)(1), (2), (3) and (6); AP I, Art. 44(1).
482 GC III, Art. 4(A)(4) and (5).
483 GC III, Art. 4(B)(1).
484 GC III, Art. 4(B)(2); Hague Convention No. V, Art. 11.
485 GC III, Art. 4(A)(3).
486 AP I, Art. 45(1).
487 GC III, Art. 5(2); AP I, Art. 45(1).
488 AP I, Art. 45(2).

DETENTION AND INTERNMENT 179

protection for the duration of their captivity, they may in no circumstances
renounce any or all of the rights afforded to them under IHL.489

2. Beginning and end of captivity

(a) Beginning of captivity
Prisoners of war benefit from the protection of their status from the time
they fall into the power of the enemy and until their final release and repatri-
ation.490 They are considered to have “fallen into the power of the enemy” once
they are captured in the course of hostilities or taken into custody following
surrender or mass capitulation. Being hors de combat is not sufficient.491

Upon capture, identity documents and objects of personal use remain in the
possession of prisoners of war, likewise equipment issued for their personal pro-
tection, such as helmets and gas masks.492 For security reasons, money and other
objects of value may be taken from prisoners following a formal procedure.493

Prisoners of war are not obliged to provide any information other than their
surname, first name, rank, date of birth, and army, regimental, personal or
serial number, or equivalent information, which must also be indicated on a
personal identity card issued by the belligerent party of origin.494 The iden-
tity of captured prisoners of war must be communicated without delay to
their country of origin and their families, through National Information
Bureaux and the ICRC’s Central Tracing Agency.495 The same channels of
communication are used throughout captivity for notification of transfers,
releases, repatriations, escapes, hospitalizations and deaths, and to respond
to any enquiries concerning the fate of individual prisoners of war.496

489 GC III, Art. 7.
490 GC III, Art. 5.
491 J.S. Pictet (ed.), Geneva Convention Relative to the Treatment of Prisoners of War,

Vol. III of The Geneva Conventions of 12 August 1949: Commentary, ICRC, Geneva, 1960,
p. 76 (an updated commentary is currently being prepared). On the difference between
being “in the power” of an adverse party within the meaning of hors de combat (AP I,
Art. 41(1)) and having “fallen into the power” of an adverse party for the purpose of
determining prisoner-of-war status (AP I, Art. 41(3); GC III, Art. 5(1)), see Y. Sandoz,
C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Protocols, op. cit.
(note 6), paras 1611–1612.

492 GC III, Art. 18(1), (2) and (3); CIHL, Rule 122.
493 GC III, Art. 18(4), (5) and (6).
494 GC III, Art. 17(1) and (3). See also CIHL, Rule 123.
495 GC III, Arts 70, 122 and 123. For more information on National Information Bureaux

and the Central Tracing Agency, see Textbox 6, Chapter 4, VI.3.d.
496 GC III, Art. 122(5)-(7).

180 CHAPTER 5

After capture, prisoners of war must be evacuated to camps situated at a safe
distance from the combat zone.497 They must be provided with the necessary
food, water, clothing and medical care, and suitable precautions must be taken
to ensure their safety during evacuation.498 The duty to evacuate prisoners is
subject to two exceptions. First, wounded or sick prisoners of war may be
temporarily kept back if their medical condition is such that being evacuated
would expose them to greater risks than remaining in a danger zone.499 Second,
when prisoners of war are captured during unusual conditions of combat that
prevent their evacuation, such as during commando operations behind enemy
lines, they may be disarmed, but must be released and all feasible precautions
must be taken to ensure their safety.500 Similar conditions apply to transfers of
prisoners of war after their arrival in a camp.501

(b) Early termination of captivity
After their evacuation, prisoners of war will usually be interned until the
end of active hostilities.502 There are three circumstances in which captivity
may end earlier:

• repatriation, or accommodation in a neutral country, of wounded
or sick prisoners of war for medical or humanitarian reasons;503

• escape (prisoners of war who are recaptured after an unsuccessful at-
tempt to escape may be subjected only to disciplinary punishment,504
whereas no punishment whatsoever may be imposed in case of re-
capture after a successful escape;505 a prisoner’s escape is considered
successful when he: (1) has rejoined his own or co-belligerent armed
forces; (2) has left the territory controlled by the detaining power or
its allies; or (3) has reached a friendly or allied ship in the territorial
waters, but not under the control, of the detaining power);506

• death, which must be followed by a formal procedure, in particu-
lar if murder is suspected or if the cause of death is unknown.507

497 GC III, Arts 19(1) and (3), and 20(1) and (2).
498 GC III, Arts 19(3) and 20(2).
499 GC III, Art. 19(2).
500 AP I, Art. 41(3).
501 GC III, Arts 46–48.
502 GC III, Art. 118(1).
503 GC III, Art. 109. For a detailed list of cases entitled to such repatriation or accommodation,

see GC III, Art. 110.
504 GC III, Art. 92(1) and (3).
505 GC III, Art. 91(2).
506 GC III, Art. 91(1).
507 GC III, Arts 120 and 121(1), (2) and (3); CIHL, Rule 116.

DETENTION AND INTERNMENT 181

(c) General release, repatriation and transfers
At the cessation of active hostilities, all prisoners of war must be released and
repatriated without delay, even if no peace treaty or armistice agreement has
been reached between the parties.508 Thus, the decisive criterion for the obli-
gation of release and repatriation to arise is not the political settlement of the
conflict but the actual end of hostilities, together with a reasonable expect-
ation that they will not resume in the foreseeable future. Whether this is the
case must be determined objectively for each context. For example, depend-
ing on the circumstances, indications that active hostilities have ceased may
include the withdrawal of troops from operational areas, the resumption of
negotiations or diplomatic relations between the parties, the demobilization
of parts of their armed forces, and the deployment of multinational forces as
ceasefire observers or administrators of disputed territory. In the conflicts
between Ethiopia and Eritrea, for instance, and between the Islamic Repub-
lic of Iran and Iraq, the repatriation of thousands of prisoners of war was
delayed for many years, with significant humanitarian consequences for all
sides.

The duty of the detaining power to release and repatriate prisoners of war is
absolute. While no prisoner of war may be repatriated against his will as long
as hostilities are ongoing,509 prisoners of war are not, in principle, at liberty
to refuse such repatriation after the cessation of active hostilities.510 Nev-
ertheless, State practice since World War II has increasingly shifted towards
accepting the refusal of prisoners of war to be repatriated, particularly under
the customary principle of non-refoulement. According to that principle, no
person may be transferred to a country where he or she may have reason
to fear persecution, torture or death on account of his or her race, religion,
nationality or political opinion. The principle of non-refoulement originates in
refugee law and has also been expressly recognized in connection with trans-
fers of persons protected under the Fourth Geneva Convention.511 It is widely
recognized as part of customary international law. Finally, prisoners of war
who are detained in connection with a judicial prosecution or a conviction
for a criminal offence can be held beyond the cessation of hostilities until the
judicial proceedings are completed or until they have served their sentence.512

508 GC III, Art. 118(1).
509 GC III, Art. 109(4).
510 GC III, Art. 7.
511 See Convention relating to the Status of Refugees, 28 July 1951, Art. 33(1); GC IV, Art.

45(4).
512 GC III, Art. 115(2) and (3); CIHL, Rule 128 in fine.

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182 CHAPTER 5

3. Treatment and conditions of internment

(a) Responsibility and humane treatment
According to the Third Geneva Convention, prisoners of war “are in the
hands of the enemy Power, but not of the individuals or military units who
have captured them.”513 Thus, irrespective of the individual responsibilities
that may exist, ultimate responsibility for the treatment given to prisoners
of war lies with the party to the conflict detaining them. Prisoners of war
may be transferred to another State only if the latter is able and willing to
afford them the protection they are entitled to under IHL. Should they be so
transferred, responsibility for their treatment moves to the receiving State
for such time as they are in its custody.514 If that State fails to fulfil its obliga-
tions under IHL in any important respect, however, the original detaining
power must take effective measures to correct the situation or ensure that
the prisoners of war are returned to its jurisdiction.515

Prisoners of war are entitled to humane treatment and respect for their person
at all times.516 The detaining power must treat all prisoners of war equally,
without any adverse distinction based on criteria such as race, nationality,
religious belief or political opinion. This does not preclude, of course, privil-
eged treatment justified by rank, sex, age, medical condition or professional
qualifications.517 IHL prohibits any unlawful act or omission causing death or
seriously endangering the health of prisoners of war, including, in particular,
physical mutilation, and medical or scientific experiments that are not justified
by the medical condition and not in the interests of the prisoner concerned.518
Also, prisoners of war must at all times be protected against violence, intimi-
dation, insults and public curiosity.519 As prisoners of war are particularly
exposed to potential acts of revenge by the detaining power, the Third Geneva
Convention specifically prohibits any measures of reprisal against them.520

(b) Conditions of internment

Places of internment
The detaining power may subject prisoners of war to internment or restrict their
movements, but it may not hold them in closed confinement or penitentiaries
except where necessary to safeguard their health or for the purpose of penal

513 GC III, Art. 12(1).
514 GC III, Art. 12(2).
515 GC III, Art. 12(3).
516 GC III, Arts 13 and 14; CIHL, Rule 87.
517 GC III, Art. 16. See also GC III, Arts 43(1), 44(1) and 45(1); CIHL, Rule 88.
518 GC III, Art. 13(1); CIHL, Rule 92.
519 GC III, Art. 13(2).
520 GC III, Art. 13(3); CIHL, Rule 146.

DETENTION AND INTERNMENT 183

and disciplinary sanctions.521 Prisoners of war should be interned in groups
according to their nationality, language and customs, and with the comrades
with whom they were serving at the time of capture.522 Prisoners of war may
also be partially or wholly released on parole or promise where applicable.523

As far as places of internment are concerned, prisoners of war must be held on
land and outside zones exposed to military combat or an unhealthy climate.524
They are entitled to the same protective measures against aerial bombard-
ments and other dangers of war as the local civilian population.525 In order
to be protected from direct attacks and the incidental effects of the hostilities,
prisoner-of-war camps should be marked by the letters PW or PG – of a size
and appearance that make them clearly visible – and their location communi-
cated to the opposing party.526

Basic needs
The detaining power must provide prisoners of war in its custody with the
necessary food, water, shelter, clothing and medical care free of charge,527
while taking into account the local climate, the nature of their daily work,
and their habits and customs.528 Prisoners of war must be accommodated
under conditions comparable to those of the forces of the detaining power.529
Where female prisoners of war are held in the same camps as male, separate
dormitories and sanitary facilities must be provided for them.530 Within the
financial means available to them, prisoners of war must also be allowed to
procure additional foodstuffs, soap and tobacco and similar articles at local
market prices.531

The detaining power must take all sanitary measures necessary to ensure clean
and hygienic conditions in the camps532 and must conduct medical inspec-
tions at least once a month.533 Prisoners of war must have access to medical
care corresponding to their needs, preferably from medical personnel of the

521 GC III, Arts 21(1) and 22(1).
522 GC III, Art. 22(3).
523 GC III, Art. 21(2) and (3).
524 GC III, Arts 22(1) and (2), and 23(1); CIHL, Rule 121.
525 GC III, Art. 23(1) and (2).
526 GC III, Art. 23(3) and (4).
527 GC III, Arts 15 and 30(5); CIHL, Rule 118.
528 GC III, Arts 25(1), 26(1), (2) and (3), and 27(1).
529 GC III, Art. 25(1).
530 GC III, Arts 25(4) and 29(2); CIHL, Rule 119.
531 GC III, Art. 28(1).
532 GC III, Art. 29(1).
533 GC III, Art. 31.

184 CHAPTER 5

belligerent party to which they belong and, if possible, of their nationality.534 For
this purpose, the detaining power may retain medical and religious personnel
of the opposing armed forces and require them to exercise their medical and
spiritual functions for the benefit of their captured comrades.535

Indeed, within the disciplinary routine prescribed by the military authorities,
prisoners of war must be allowed to freely exercise their religion and to attend
the services of their faith in premises adequate for that purpose.536 Retained reli-
gious personnel and prisoners of war who, in their civilian lives, are ministers of
their religion must be allowed to freely exercise their ministry.537 The detaining
power must also encourage prisoners of war to engage in intellectual, educa-
tional, and recreational activities, including sports and games, and provide
them with the time, premises and equipment necessary for that purpose.538

Command and discipline
Every prisoner-of-war camp must be put under the immediate authority of a
commissioned officer belonging to the regular armed forces of the detaining
power539 and responsible for the application of the Third Geneva Conven-
tion.540 Every order and command addressed to individual prisoners of war
must be given in a language they understand.541 The text of the Third Geneva
Convention and of any special agreement concluded between the belligerent
parties must also be posted inside the prisoner-of-war camp in a language the
prisoners understand.542 Throughout their captivity, prisoners of war remain
subject to camp discipline. The detaining authority may, within the terms
of the Third Geneva Convention, take all measures reasonably necessary to
prevent or suppress riots, escapes or similar acts of disobedience. However,
the use of weapons against prisoners of war, especially against those who are
escaping or attempting to escape, constitutes an extreme measure and must
always be preceded by warnings appropriate to the circumstances.543

534 GC III, Art. 30(3).
535 GC III, Art. 33(2).
536 GC III, Art. 34; CIHL, Rule 127.
537 GC III, Arts 35–37.
538 GC III, Art. 38.
539 GC III, Art. 39(1).
540 Ibid.
541 GC III, Art. 41(2).
542 GC III, Art. 41(1).
543 GC III, Art. 42.

DETENTION AND INTERNMENT 185

(c) Labour and financial resources
In principle, prisoners of war who are fit may be compelled to work, taking into account their
age, sex, rank and physical condition.544 Officers or persons of equivalent status may not be
compelled to work, and non-commissioned officers may be required to carry out supervisory
tasks only. Both may, however, request that suitable work be found for them.545 Mandatory
work is restricted to tasks related to camp administration, installation or maintenance, or to
one of the other areas provided for in the Third Geneva Convention.546 Always excluded is work
of a military character or purpose, or work in the metallurgical, machinery and chemical
industries that may be expected to make an important contribution to the war effort.547
Also prohibited is humiliating work and, except in the case of volunteers, unhealthy or dan-
gerous work, such as the removal of mines and similar devices.548 Any prisoner of war may
be exempted from work for medical reasons.549 Working conditions must be appropriate in
terms of accommodation, food, clothing and equipment and may not be inferior to those
enjoyed by nationals of the detaining power employed in similar work, particularly with
regard to duration, training, safety and labour protection.550

All prisoners of war are entitled to receive from the detaining power fair payment for the
work they are required to carry out, as well as a monthly advance of pay commensurate with
their rank in their country of origin.551 Remunerated work includes spiritual or medical duties
carried out for the benefit of their comrades.552 Prisoners must also be allowed to receive sup-
plementary payments from their country of origin,553 and to receive or send funds through
money transfers.554 In all cases, however, the detaining power may limit the maximum amount
of money in cash that prisoners may have in their possession.555

(d) Relations with the world outside
It is of paramount importance that prisoners of war be able to maintain relations with the
world outside, most notably with their families and their country of origin. Hence IHL
requires that individual prisoners of war be enabled to send a capture card rapidly to their
family and to the ICRC’s Central Tracing Agency, informing them of their capture, postal
address and state of health.556 Throughout their captivity, prisoners of war are allowed to

544 GC III, Art. 49(1).
545 GC III, Art. 49(2) and (3).
546 GC III, Art. 50.
547 Ibid.
548 GC III, Art. 52; CIHL, Rule 95.
549 GC III, Art. 55.
550 GC III, Arts 51 and 53.
551 GC III, Arts 60, 62 and 67.
552 GC III, Art. 62.
553 GC III, Art. 61.
554 GC III, Art. 63.
555 GC III, Art. 58.
556 GC III, Art. 70.

186 CHAPTER 5

correspond through letters, cards – and, where necessary, telegrams – in
their native language.557 Today, this must probably be construed to include
phone calls and electronic messages sent via the internet. Prisoners of war
may also receive individual parcels or collective shipments containing items
such as foodstuffs, clothing, medical supplies and articles of a religious, edu-
cational or recreational character.558 All correspondence, parcels or ship-
ments addressed to prisoners of war or sent by them may be censored or
examined by both the sending and the receiving State.559

Further, representatives of the Protecting Power and ICRC delegates must
have access to all places where prisoners of war may be held. They must be
allowed to interview the prisoners and their representatives without wit-
nesses, if necessary through an interpreter, and to freely select the places
they wish to visit. The duration and frequency of these visits may not be
restricted, and visits may not be prohibited except for reasons of imperative
military necessity, and then only as an exceptional and temporary measure.

557 GC III, Art. 71; CIHL, Rule 125.
558 GC III, Art. 72.
559 GC III, Art. 76(1) and (2). For further restrictions placed on the number and frequency of

items of correspondence, parcels and shipments, see GC III, Arts 71, 72 and 76(3). See also J.S.
Pictet (ed.), Commentary on the Third Geneva Convention, op.cit. (note 491), pp. 376–377.

Repatriation of 279 Ethiopian prisoners of war under the aegis of the ICRC, Eritrean-Ethiopian
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Before the visits, the names of the ICRC delegates must be submitted for
approval to the detaining power.560

(e) Relations with the authorities

Requests, complaints and representatives
Prisoners of war have an unrestricted right to make requests and complaints
regarding their conditions of internment to the detaining power, the repre-
sentatives of the Protecting Power or the ICRC delegates.561 The prisoners of
war should be represented by the most senior officer among them or, in the
absence of officers, by a prisoner elected by his comrades and approved by the
detaining power.562 The detaining power must afford such “prisoners’ repre-
sentatives” the time, facilities and freedom of movement necessary to accom-
plish their duties in terms of inspection, representation and communication.563

Disciplinary and judicial authority
Prisoners of war are subject to the laws, regulations and orders in force in the
armed forces of the detaining power. The latter may, within the boundaries
of IHL, take judicial or disciplinary measures in respect of any punishable
offence committed by a prisoner of war.564 The Third Geneva Convention is
based on the principle that prisoners of war subjected to disciplinary or judi-
cial proceedings and sanctions should be given the same rights, protection
and treatment as members of the armed forces of the detaining power in
the same situation. This applies not only to the question of whether the case
should be adjudicated by a mili tary or civilian court,565 but also to the nature
of the penalties566 and to the treatment and living conditions of prisoners
during the execution of such penalties.567

Preferential treatment
In some respects, IHL even requires that prisoners of war receive preferen-
tial treatment, most notably because they have no duty of allegiance towards
the detaining power and find themselves in captivity owing to circumstances
beyond their control. For example, the Third Geneva Convention stipulates
that the competent authorities should exercise lenience and, wherever possi-
ble, give preference to disciplinary over judicial measures,568 and that in fixing

560 GC III, Art. 126; CIHL, Rule 124.
561 GC III, Art. 78(1) and (2).
562 GC III, Art. 79.
563 GC III, Arts 80 and 81.
564 GC III, Art. 82.
565 GC III, Art. 84(1).
566 GC III, Art. 87(1).
567 GC III, Arts 88 and 108.
568 GC III, Art. 83.

188 CHAPTER 5

a sentence they should not be bound by minimum penalties prescribed in
national law.569 For the same reason, no prisoner of war may be deprived of
his rank by the detaining power, or prevented from wearing his badges.570 The
special status and situation of prisoners of war must imperatively be given the
most careful consideration before pronouncing a death sentence. When such
a sentence is passed, the status and situation of prisoners of war require that
its execution be delayed for at least six months.571 The detaining power must
notify the prisoners’ representative and the Protecting Power of any judicial
proceedings instituted against a prisoner of war, and of any judgment and sen-
tence pronounced against him,572 so as to allow representatives of the Protect-
ing Power to attend the trial and to take any other pertinent measures falling
within their function.573 Finally, the Third Geneva Convention also makes it
clear that prisoners of war prosecuted under the laws of the detaining power
for acts committed prior to their capture retain the benefits and protection of
their status under IHL even if convicted.574

Procedural guarantees
The rules of IHL regulating the conduct of disciplinary and judicial proceed-
ings and the execution of sanctions against prisoners of war reflect a catalogue
of fundamental guarantees widely accepted as inherent in the basic concepts
of the rule of law, of a fair trial and of humane treatment. Accordingly, in no
circumstances may prisoners of war be tried by a court of any kind that fails
to offer the essential guarantees of independence and impartiality as generally
recognized or to afford the accused adequate rights and means of defence.575
More specifically, an accused prisoner of war must be informed of the charges
against him and of his right to assist ance by a qualified advocate or counsel
of his own choice, to call witnesses and, if necessary, to the services of a com-
petent interpreter.576 Prisoners of war may not be tried or sentenced for acts
that were not punishable at the time they were committed.577 They may not be
punished more than once for the same act,578 may not be coerced into making
a confession, 579 and may not be convicted without an opportunity to defend

569 GC III, Art. 87(2).
570 GC III, Art. 87(4).
571 GC III, Arts 100(3) and 101.
572 GC III, Arts 104 and 107.
573 GC III, Art. 105(5).
574 GC III, Art. 85.
575 GC III, Art. 84(2); CIHL, Rule 100.
576 GC III, Arts 96(4) and 105(1); CIHL, Rule 100.
577 GC III, Art. 99(1); CIHL, Rule 101.
578 GC III, Art. 86; CIHL, Rule 100.
579 GC III, Art. 99(2); CIHL, Rule 100.

DETENTION AND INTERNMENT 189

themselves.580 Every prisoner of war also has a right of appeal or petition
against any sentence pronounced against him.581

Prohibition of cruel, inhuman or degrading punishment
Any prisoner of war convicted for a disciplinary or criminal offence
remains under the protection of IHL, including in matters concerning the
choice and execution of the penalty. Most importantly, disciplinary pun-
ishments may in no case be inhuman, brutal or dangerous to the health of
prisoners of war.582 It is also prohibited to resort to collective punishment
for individual acts, to corporal punishment, to imprisonment in prem-
ises without daylight and, in general, to any form of torture or cruelty.583
Finally, prisoners of war who have served disciplinary or judicial sentences
may not be treated differently from other prisoners of war.584
585

580 GC III, Arts 96 and 99(3); CIHL, Rule 100.
581 GC III, Art. 106; CIHL, Rule 100.
582 GC III, Art. 89(3).
583 GC III, Art. 87(3); CIHL, Rules 90–91 and 103.
584 GC III, Art. 88(4).
585 All ICRC documents available at: www.icrc.org

To go further (Internment of prisoners of war)585

• Nigel S. Rodley, The Treatment of Prisoners under International Law, Oxford
University Press, Oxford, 3rd ed., 2009.

• Silvia Borelli, “Casting light on the legal black hole: International law and
detentions abroad in the ‘War on Terror’,” IRRC, Vol. 87, No. 857, March 2005,
pp. 39–68.

How Does Law Protect in War?

• Document No. 97, United States Military Tribunal at Nuremberg, United
States v. Wilhelm von Leeb et al.

• Case No. 99, United States, Ex Parte Quirin et al.

• Case No. 114, Malaysia, Osman v. Prosecutor

• Case No. 160, Eritrea/Ethiopia, Partial Award on POWs

• Case No. 170, ICRC, Iran/Iraq Memoranda

• Case No. 263, United States, Hamdan v. Rumsfeld

190 CHAPTER 5

III. INTERNMENT AND DETENTION OF CIVILIANS

Not all persons deprived of their liberty in a situation of international
armed conflict qualify for prisoner-of-war status. Particularly in occupied
territories, but also within their own territory, belligerent States are regu-
larly confronted with civilians engaged in criminal activities or posing a
serious security threat requiring their detention. Moreover, captured mer-
cenaries and members of the armed forces caught in the act of espionage,
or while preparing or conducting attacks without wearing a uniform, are
not entitled to prisoner-of-war status. These persons generally fall within
the scope of protection of the Fourth Geneva Convention. Furthermore,
persons not entitled to the status of “protected person” under the Fourth
Geneva Convention nevertheless benefit from fundamental guarantees
recognized under customary IHL, which provide similar protection.586
While this section focuses on civilians deprived of their liberty by a party
to an international armed conflict, it should be kept in mind that the same
protection also applies to other persons falling within the personal scope
of applicability of the Fourth Geneva Convention as described in Section
I.3. above.

1. Beginning and end of internment

(a) Beginning of internment

Compulsory internment
Compulsory internment is the most severe security measure at the dis-
posal of a belligerent party. It may be imposed only as a last resort, when
less intrusive measures of control, such as assigned residence, restrictions
of movement or the prohibition of certain professional or political activi-
ties, are deemed inadequate.587 In their own territory, parties to a conflict
may order the internment of protected persons only if their security makes
internment “absolutely necessary,”588 whereas in occupied territories it must
be considered “necessary for imperative reasons of security.”589 Given the
scope of discretion allowed to the detaining or occupying power, these
terms can be regarded as largely synonymous. In essence, they require that
the person in question pose a significant threat to the internal or external
security of the detaining power that cannot be adequately addressed by less
intrusive measures than his or her internment. This would undoubtedly
include any activities amounting to direct participation in hostilities. Other
activities or affiliations that may justify the internment of protected persons

586 AP I, Arts 45(3) and 75; CIHL, Rules 87–105.
587 GC IV, Arts 41(1) and 78(1).
588 GC IV, Art. 42(1).
589 GC IV, Art. 78(1).

DETENTION AND INTERNMENT 191

include subversive activities carried out within the territory of the detaining
power, membership in organizations aiming to cause disturbances, direct
assistance to the enemy, and acts of sabotage or espionage. However, the
mere fact that a person is an enemy national cannot be regarded as a security
threat automatically justifying internment without completely defeating the
idea of tailoring security measures to the requirements of each individual
case and reserving internment for the most serious cases. In sum, the deci-
sive factor seems to be that the detaining State “must have good reason to
think that the person concerned, by his activities, knowledge or qualifica-
tions, represents a real threat to its present or future security.”590 In all cases,
however, internment must remain an exceptional measure of last resort.

Procedural safeguards
The determination that a protected person represents a security threat neces-
sitating his or her internment must be made for each individual in regular
proceedings before an appropriate court or administrative board desig-
nated by the detaining or occupying power for that purpose, not before an
individual judge or military officer.591 Such proceedings must ensure that the
person concerned is informed promptly, in a language he understands, of the
reasons for his internment,592 and must include the right of appeal.593 Appeals
must be decided as quickly as possible594 and, if internment is maintained, the
court or administrative board must review at least twice yearly the necessity
of such internment with a view to the favourable amendment of the initial
decision, if circumstances permit.595 The increasingly severe humanitarian
impact of long-term internment should always be taken into account. Unless
the protected persons concerned object, the detaining power must notify the
Protecting Power, without delay, of the names of all protected persons who
have been interned or released from internment, along with any decisions of
the relevant courts or administrative boards.596 Pregnant women and mothers
having dependent infants who are interned for reasons related to the armed
conflict must have their cases considered with the utmost priority.597

590 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 258.
591 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 369.
592 AP I, Art. 75(3).
593 GC IV, Art. 78(2).
594 GC IV, Arts 43(1) and 78(2).
595 GC IV, Arts 43(1) and 78(2).
596 GC IV, Art. 43(2).
597 AP I, Art. 76(2); CIHL, Rule 134.

192 CHAPTER 5

Voluntary internment
If their situation renders it necessary,598 protected persons finding them-
selves in the territory of a party to the conflict may also voluntarily demand
their internment but, in order to ensure the genuineness of the demand and
avoid abuse, must do so through representatives of the Protecting Power or
the ICRC.599 Cases in which voluntary internment may be in the interest
of protected persons include situations where they are exposed to threats
or violence on the part of the general population, or where their national-
ity or allegiance renders them unable to receive employment or otherwise
earn a living. Similar situations could also arise for protected persons res-
ident in occupied territories, for example in the case of civilians who have
collaborated with the occupying power in a way that provokes the hostility
of the general population. In such situations, the territorial State is obliged
to respond favourably to demands for voluntary internment. However, the
possibility of voluntary internment is not foreseen for occupied territories,
and the Fourth Geneva Convention prohibits any internment in situations
other than those expressly enumerated.600

Punitive internment
Although internment is generally a security measure that is preventive
rather than punitive in nature, the Fourth Geneva Convention also recog-
nizes the possibility of converting a sentence of imprisonment to one of
internment for the same period as a (preferential) penalty for a criminal
offence.601 This exception to the preventive nature of internment applies only
in occupied territory and aims to afford protected persons who have com-
mitted minor offences devoid of dishonourable motives the more beneficial
treatment and conditions of internment as opposed to common imprison-
ment.602 The Convention makes clear, however, that in such exceptional
cases of punitive use, internment may not be imposed as an open-ended
measure but, just as a sentence of imprisonment, must be of a duration
determined in proportion to the offence committed.603

598 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386),
pp. 258–259.

599 GC IV, Art. 42(2).
600 GC IV, Art. 79.
601 GC IV, Art. 68(1).
602 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), pp. 343–344.
603 GC IV, Art. 68(1).

Families welcoming released Ivorian internees, refugee camp, Liberia, 2012.

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Voluntary internment
If their situation renders it necessary,598 protected persons finding them-
selves in the territory of a party to the conflict may also voluntarily demand
their internment but, in order to ensure the genuineness of the demand and
avoid abuse, must do so through representatives of the Protecting Power or
the ICRC.599 Cases in which voluntary internment may be in the interest
of protected persons include situations where they are exposed to threats
or violence on the part of the general population, or where their national-
ity or allegiance renders them unable to receive employment or otherwise
earn a living. Similar situations could also arise for protected persons res-
ident in occupied territories, for example in the case of civilians who have
collaborated with the occupying power in a way that provokes the hostility
of the general population. In such situations, the territorial State is obliged
to respond favourably to demands for voluntary internment. However, the
possibility of voluntary internment is not foreseen for occupied territories,
and the Fourth Geneva Convention prohibits any internment in situations
other than those expressly enumerated.600

Punitive internment
Although internment is generally a security measure that is preventive
rather than punitive in nature, the Fourth Geneva Convention also recog-
nizes the possibility of converting a sentence of imprisonment to one of
internment for the same period as a (preferential) penalty for a criminal
offence.601 This exception to the preventive nature of internment applies only
in occupied territory and aims to afford protected persons who have com-
mitted minor offences devoid of dishonourable motives the more beneficial
treatment and conditions of internment as opposed to common imprison-
ment.602 The Convention makes clear, however, that in such exceptional
cases of punitive use, internment may not be imposed as an open-ended
measure but, just as a sentence of imprisonment, must be of a duration
determined in proportion to the offence committed.603

598 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386),
pp. 258–259.

599 GC IV, Art. 42(2).
600 GC IV, Art. 79.
601 GC IV, Art. 68(1).
602 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), pp. 343–344.
603 GC IV, Art. 68(1).

Families welcoming released Ivorian internees, refugee camp, Liberia, 2012.

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(b) Termination of internment

Cessation of individual security threat
Persons interned for actions related to the armed conflict must be released
as soon as possible and, in any event, as soon as the circumstances or
reasons justifying internment no longer exist.604 It is the function of the
periodic review to ensure that no protected person is subjected to compul-
sory internment for longer than is absolutely necessary for security reasons.

Escape
Individual internees may also successfully escape. Internees who are recap-
tured after having escaped or when attempting to escape may be subjected
to special surveillance, but are liable only to disciplinary punishment, even
in the case of a repeat offence.605

Death
Should an internee die, a death certificate must be prepared by a doctor.606 IHL
also contains provisions on the subsequent notification of the Protecting Power
and the Central Tracing Agency,607 the handling of wills,608 proper burial or

604 GC IV, Art. 132(1); AP I, 75(3); CIHL, Rule 128 B.
605 GC IV, Art. 120(1) and (2). See also GC IV, Art. 120(3), for internees aiding and abetting

an escape.
606 GC IV, Art. 129(2).
607 GC IV, Art. 129(3).
608 GC IV, Art. 129(1).

194 CHAPTER 5

cremation and the marking of graves.609 If it is suspected that the internee was
murdered, or if the cause of death is unknown, the detaining power must
immediately conduct an official inquiry into the case,610 prepare an official
report611 and, depending on the results of the inquiry, instigate appropriate
criminal prosecutions.612

Release for humanitarian reasons
Belligerent parties should, even during hostilities, endeavour to release,
repatriate, or return to their places of residence certain categories of internee,
or to accommodate them in a neutral country, in particular children, preg-
nant women and mothers with infants and young children, the wounded
and sick, and internees who have been detained for a long time.613

General release, repatriation or return
According to the Fourth Geneva Convention, internment “shall cease as soon
as possible after the close of hostil ities.”614 This formulation is markedly less
demanding on the detaining power than the strict requirement of release and
repatriation “without delay after the cessation of hostilities” used for prisoners
of war.615 The rationale of the provision is not to prohibit all forms of intern-
ment after the end of hostilities, but to prevent the indefinite prolongation of
internment when the general context justifying such measures has ceased to
exist.616 Once military hostilities or situations of occupation come to an end,
the parties to a conflict must ensure the return of all internees to their last place
of residence, or facilitate their repatriation.617 For that purpose, they may set up
committees to search for dispersed internees.618 In any case, however, civilian
internees remain protected under the Fourth Geneva Convention and the fun-
damental guarantees set out in Article 75 of Additional Protocol I until their
final release, repatriation or return, even after the end of the armed conflict.619

Continued detention
The only protected persons who may be held on the territory of a party to
the conflict beyond the close of hostilities are those against whom penal

609 GC IV, Art. 130; CIHL, Rule 115.
610 GC IV, Art. 131(1); CIHL, Rule 116.
611 GC IV, Art. 131(2).
612 GC IV, Art. 131(3).
613 GC IV, Art. 132(2); See also CIHL, commentary on Rule 128.
614 GC IV, Art. 133(1); CIHL, Rule 128 B.
615 GC III, Art. 118(1).
616 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 515.
617 GC IV, Art. 134.
618 GC IV, Art. 133(3).
619 GC IV, Art. 6(4); AP I, 75(6).

DETENTION AND INTERNMENT 195

proceedings are pending, or who are serving a sentence, for offences not
exclusively subject to disciplinary penalties. Such persons may be detained
until the close of such proceedings and, if necessary, until they have served
their sentence.620 Strictly speaking, of course, such deprivation of liberty
constitutes criminal detention or punitive imprisonment, but no longer
internment within the meaning of IHL. Nevertheless, even as criminal
convicts, the persons concerned continue to benefit from their status as
protected persons until their final release, repatriation or return.

2. Treatment and conditions of internment

(a) Responsibility and humane treatment

Responsibility of the detaining power
Irrespective of any individual responsibility, parties to a conflict remain
responsible for the treatment accorded by their agents to protected per-
sons.621 Internees may lawfully be transferred to another State only if the
latter is willing and able to grant them the protection to which they are
entitled under IHL, but in no case may they be transferred out of an occu-
pied territory.622 When internees are lawfully transferred to another State,
responsibility for their protection passes to the receiving State for such time
as they are in its custody. However, if that State fails to fulfil its obligations
under IHL in any important respect,623 the ori ginal detaining power must
take effective measures to correct the situation or ensure that the internees
in question are returned to its jurisdiction.624

Humane treatment
Protected persons are entitled, in all circumstances, to respect for their
physical and psychological integrity, their honour, their family rights, their
religious convictions and practices, and their manners and customs. They
must be treated humanely at all times, and protected, especially against all
acts of violence or threats thereof and against insults and public curiosity.625
More specifically, IHL prohibits any violence to life, health, or the physical or
mental well-being of protected persons, in particular murder, torture, corpo-
ral punishment, mutilation, outrages against human dignity, hostage-taking,
collective punishment, as well as threats to engage in any of these acts.626

620 GC IV, Art. 133(2); CIHL, Rule 128 in fine.
621 GC IV, Art. 29.
622 GC IV, Arts 45(1) and (3), and 49; CIHL, Rule 129 A.
623 For examples, see J. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit.

(note 386), p. 269.
624 GC IV, Art. 45(3). On transfers of protected persons, see also Chapter 5.III.2.g.
625 GC IV, Arts 27(1) and 37; CIHL, Rule 87.
626 AP I, Art. 75(2); CIHL, Rules 89–93, 96 and 103.

196 CHAPTER 5

This also includes the prohibition of any form of physical or psychological
coercion, in particular to obtain information,627 of reprisals and measures of
intimidation and terrorism,628 and of unjustified medical or scientific exper-
iments and any other form of brutality.629 Humane treatment also includes
protection against any form of sexual violence or abuse.630 Apart from dif-
ferences justified by their state of health, age and sex, all protected persons
must be treated with the same consideration, without any adverse distinction
based on race, religion, political opinion or similar criteria.631

(b) Conditions of internment

Places of internment
Places of internment may not be set up in areas particularly exposed to the
hostilities.632 In order to protect internees from direct attacks and the inci-
dental effects of hostilities, places of internment should be marked – in such
a way as to make them clearly visible – by the letters “IC” and their location
communicated to the opposing party.633 In addition, places of internment
exposed to air raids and other dangers of war must be equipped with shel-
ters and, more generally, must benefit from the same protective measures
as the general population.634 In no case may protected persons be used as
“human shields” to render certain objects or areas immune from military
operations.635

Internees must be accommodated and administered separately from pris-
oners of war and from persons deprived of their liberty for any other reason,
most notably in connection with criminal offences.636 Moreover, as far as pos-
sible, internees should be grouped according to their nationality, language
and customs.637 Women must be accommodated separately from men and, in
any case, must have separate sleeping quarters and sanitary conveniences and
be under the immediate supervision of other women.638 Similarly, interned

627 GC IV, Art. 31; CIHL, Rule 90.
628 GC IV, Art. 33; CIHL, Rule 146.
629 GC IV, Art. 32; CIHL, Rule 92.
630 GC I–IV, common Art. 3; GC IV, Art. 27(2); AP I, Art. 75; CIHL, Rules 93 and 134.
631 GC IV, Art. 27(3); CIHL, Rule 88.
632 GC IV, Art. 83(1); CIHL, Rule 121.
633 GC IV, Art. 83(2) and (3).
634 GC IV, Art. 88.
635 GC IV, Art. 28. On the prohibition and consequences of using human shields, see also AP

I, Art. 51(7) and (8), CIHL, Rule 97, and Chapter 3.I.3.d.
636 GC IV, Art. 84.
637 GC IV, Art. 82(1).
638 GC IV, Art. 85(4); AP I, Art. 75(5); CIHL, Rule 119.

DETENTION AND INTERNMENT 197

children must be accommodated separately from adults.639 Nevertheless,
members of the same family must be accommodated together in the same
place of internment and, wherever possible, separately from other internees,
so as to allow for a proper family life.640 This does not preclude temporary
separation for reasons of employment, health or the enforcement of penal or
disciplinary sanctions.641

Basic needs
The detaining power must provide protected persons – for the duration of
their internment, and free of charge – sufficient food, drinking water and
clothing to keep them in good physical and mental health, taking into
account factors such as climate, age, sex, medical condition, employment
and custom.642 Within the financial means available to them, internees must
also be allowed to purchase additional foodstuffs, soap, tobacco and similar
articles at local market prices.643 Premises used for the internment of pro-
tected persons must provide adequate standards of hygiene and health.644
Internees must have access to free medical care corresponding to their
needs.645 At least once a month, medical inspections must be conducted to
supervise the general state of health, nutrition and cleanliness of the intern-
ees and to screen them for contagious diseases.646

Religion, recreation and study
Within the disciplinary routine prescribed by the military authorities,
internees must be allowed to freely exercise their religion and to attend
the services of their faith in premises adequate for that purpose.647 Intern-
ees who are ministers of their religion must be allowed to freely exercise
their ministry among internees of the same religion, and must be given the
facilities reasonably required to do so.648 The detaining power must also
encourage internees to engage in intellectual, educational and recreational
activities, including sports and games, and provide them with the support
and premises necessary for that purpose.649 Most import antly, children and

639 AP I, Art 77(4); CIHL, Rule 120.
640 GC IV, Art. 82(3); CIHL, Rule 105.
641 GC IV, Art. 82(2).
642 GC IV, Arts 89 and 90; CIHL, Rule 118.
643 GC IV, Art. 87(1).
644 GC IV, Art. 85(1).
645 GC IV, Arts 91 and 95(3).
646 GC IV, Art. 92.
647 GC IV, Arts 86 and 93(1); CIHL, Rule 127.
648 GC IV, Art. 93(2).
649 GC IV, Art. 94(1).

198 CHAPTER 5

young people must be allowed to attend schools either within the place of
internment or outside, and special playgrounds must be reserved for them.650

Command and discipline
Every place of internment must be put under the authority of a responsible
officer, chosen from the regular military forces or the regular civil adminis-
tration of the detaining power, who will be responsible for ensuring that the
provisions of the Fourth Geneva Convention are known to, and complied
with, by the staff in charge of internees.651 The text of the Fourth Geneva
Convention and of any special agreement concluded between the belligerent
parties must also be posted inside the place of internment in a language that
the internees understand.652 Likewise, every order and command addressed
to individual internees must be given in a language that they understand.653

Throughout their internment, protected persons remain subject to the dis-
ciplinary regime of their place of internment. Such regime must be con-
sistent with humanitarian principles and may in no circumstances impose
any physical exertion endangering the health of internees or involve their
physical or moral victimization. In view of the experience of World War
II, IHL specifically prohibits the identification of internees by tattooing or
imprinting signs or markings on their bodies; it also prohibits prolonged
standing and roll-calls, punishment drills, military drills and manoeuvres,
and the reduction of food rations.654

(c) Labour, personal property and financial resources

Work
Internees can volunteer to work but, contrary to prisoners of war and pro-
tected persons who are not interned, cannot be compelled to work. Their
use for tasks of a degrading or humiliating nature, or for work directly
related to the conduct of military operations, is prohibited in all cases.655
The detaining power may, however, require internees to do administrative
and maintenance work in places of internment, or perform duties connected
with the protection of internees against aerial bombardment or other war
risks.656 Whenever internees are employed for work, including in labour
detachments, the detaining power remains fully responsible for all working
conditions, for medical attention, for the payment of wages, and for ensuring

650 GC IV, Art. 94(2) and (3).
651 GC IV, Art. 99(1).
652 GC IV, Art. 99(2) and (3).
653 GC IV, Art. 99(4).
654 GC IV, Art. 100; CIHL, Rule 92.
655 GC IV, Art. 95(1); CIHL, Rule 95.
656 GC IV, Art. 95(3).

DETENTION AND INTERNMENT 199

the payment of compensation for occupational accidents and illnesses. The
standards applied in this respect must be in accordance with national laws,
regulations and practice and may not be inferior to those applied to compa-
rable work by non-internees.657

Personal property and financial resources
The detaining power must provide all internees with regular allowances
sufficient to purchase goods and articles such as tobacco and toiletries.658 In
addition, and subject to the prohibition against unjustified discrimination
among protected persons,659 internees must be permitted to receive allow-
ances from their country of origin or allegiance, the Protecting Power, any
organizations assisting them, or their families, as well as the income on their
property in accordance with the law of the detaining power.660 They must
also be enabled to send money to their families or other dependents.661 When
protected persons are interned, money in excess of their daily requirements,
and other valuables and objects in their possession, may be taken from them
against proper receipt, and must be credited to their personal accounts or
safeguarded on their behalf until their release.662 Nevertheless, internees
must be allowed to carry a certain amount of money on their person so as to
enable them to make purchases additional to the provisions of the detaining
power.663 Internees must also be permitted to keep objects of personal use or
sentimental value,664 as well as their identity documents.665

(d) Relations with the world outside

Transmission of information
At the outset of every international armed conflict, each party must establish
an official Information Bureau responsible for replying to all enquiries
concerning protected persons in its power, and for transmitting, within the
shortest possible period, the necessary information to their countries of
nationality or residence through the Protecting Power and the ICRC’s
Central Tracing Agency.666 In cases where the transmission of information
might be detrimental to the protected person concerned or to his or her
relatives, the information may be transmitted only to the Central Tracing

657 GC IV, Arts 95(4) and 96.
658 GC IV, Art. 98 (1).
659 GC IV, Art. 27(3); CIHL, Rule 88.
660 GC IV, Art. 98(2).
661 GC IV, Art. 98(3).
662 GC IV, Art. 97(1), (2) and (5); CIHL, Rule 122.
663 GC IV, Art. 97(7).
664 GC IV, Art. 97(1) and (3); CIHL, Rule 122.
665 GC IV, Art. 97(6).
666 GC IV, Arts 136(1) and 137(1). See also GC IV, Art. 43(2); CIHL, Rules 105 and 123.

200 CHAPTER 5

Agency, along with an explanation of the particular circumstances of the
case.667 The duty to inform covers all protected persons who are held in
custody for more than two weeks, who are subject to assigned residence or
who are interned, and includes changes such as transfers, releases,
repatriations, escapes, admission to hospital, births and deaths.668 The
information transmitted must include all elements required to identify and
locate the persons interned and to inform their families.669

Exercise of civil capacity
During their internment, protected persons retain their full civil capacity
and can exercise all rights that are compatible with their current status
and applicable laws.670 In particular, they should be enabled to manage
their property,671 to send and receive legal documents672 and to consult a
lawyer whenever necessary.673 Subject to legal limits, the detaining power
must also take all steps to ensure protected persons are not prejudiced

667 GC IV, Art. 137(2).
668 GC IV, Art. 136(2).
669 GC IV, Art. 138.
670 GC IV, Art. 80.
671 GC IV, Art. 114.
672 GC IV, Art. 113(1).
673 GC IV, Art. 113(2).

Kerevat Prison, Papua New Guinea, 2012. Employees from the ICRC and the Papua New Guinea
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by their internment in the preparation and conduct of court proceedings
they may be party to, or in the execution of any judicial decision.674

Correspondence, shipments and visitors
Immediately upon internment, but no later than one week after arrival
or transfer to a place of internment or hospital, every internee must be
enabled to send an internment card to his family and to the Central
Tracing Agency, informing them of his detention, address and state of
health.675 Throughout their internment and subject to censorship, pro-
tected persons also have the right to send and receive correspondence,
and to receive individual and collective relief shipments according to
standards that essentially match those applicable to prisoners of war.676
Unlike prisoners of war, however, internees are also allowed to receive
visitors, especially close relatives, at regular intervals and as frequently as
possible.677 In urgent cases, such as the death or serious illness of relatives,
internees may even be permitted to visit their homes.678

Access for the Protecting Power and the ICRC
Just as is the case for prisoners of war, representatives of the Protecting
Power and delegates of the ICRC must be permitted to go to all places where
protected persons are interned.679 They must be allowed to interview the
internees without witnesses, if necessary through an interpreter,680 and to
freely select the places they wish to visit.681 The duration and frequency of
these visits may not be restricted, and visits may not be prohibited except
for reasons of impera tive military necessity, and then only as an excep-
tional and temporary measure.682 Before the visits, the names of the ICRC
delegates must be submitted for approval to the detaining power.683

(e) Derogations under Article 5 of the Fourth Geneva Convention
As a general rule, the protection afforded by IHL cannot be derogated from
without express treaty provisions to the contrary. The Fourth Geneva Con-
vention contains an important derogation clause for cases where a protected

674 GC IV, Art. 115.
675 GC IV, Art. 106; CIHL, Rules 105 and 125.
676 GC IV, Arts 107–113; CIHL, Rule 125. See also Section II.3.d.
677 GC IV, Art. 116(1); CIHL, Rule 126.
678 GC IV, Art. 116(2).
679 GC IV, Art. 143(1); CIHL, Rule 124.
680 GC IV, Art. 143(2).
681 GC IV, Art. 143(4).
682 GC IV, Art. 143(3).
683 GC IV, Art. 143(5).

202 CHAPTER 5

person is definitely suspected of or has engaged in espionage,684 sabotage685
or other activities hostile to the detaining power. In occupied territory, such
persons can be deprived of their “rights of communication” if “absolute
military security so requires,”686 whereas within a belligerent party’s own
territory, they can be deprived of “such rights and privileges (…) as would
(…) be prejudicial to the security of such State.”687

Although formulated in fairly broad terms, this provision does not provide
the detaining power with an unlimited right of derogation. First, reserva-
tions in the relevant treaty provision itself specify that the fundamental
IHL guarantees of humane treatment and a fair and regular trial may not
be derogated from under any circumstances.688 Second, the derogable rights
and privileges of the protected person referred to in the clause must be dis-
tinguished from the mutual obligations of the belligerent parties, which are
not subject to derogation. Most notably, the duty of the detaining power to
provide information on each internee to the country of origin or, at least,
to the Central Tracing Agency cannot be derogated from.689 Third, in the
case of occupied territories, the possibility of derogation is already restricted
to the individual right to communication of protected persons detained as
spies.690 Moreover, even suspected spies must be granted access to a qualified
lawyer for the purpose of their defence in penal proceedings, whether in
national or in occupied territory.691 Hence, it is hard to see what other indi-
vidual rights and privileges could be suspended for security reasons without
seriously infringing the absolute rights to humane treatment and a fair trial.
Fourth, the clause itself provides that any derogatory measure must be lifted
“at the earliest date consistent with the security of the State or Occupying
Power.”692

In sum, while it may be necessary and justified to hold suspected spies in sol-
itary confinement and temporarily suspend their right to communicate with
the world outside, whether through correspondence or by receiving visits,
such measures may not exceed what is absolutely required for the security

684 For the definition of the term “spy,” see Hague Regulations, Art. 29, in conjunction with
AP I, Art. 46.

685 For the definition of the term “sabotage,” see J.S. Pictet (ed.), Commentary on the Fourth
Geneva Convention, op. cit. (note 386), p. 57.

686 GC IV, Art. 5(2).
687 GC IV, Art. 5(1).
688 See also AP I, Art. 75(1), (2), (3) and (4); CIHL, Rules 87 and 100, and commentary on Rule 107.
689 See Section III.2.d.
690 GC IV, Art. 5(2); AP I, Art. 45(3).
691 GC IV, Arts 72(1) and (2), and 126; AP I, Art. 75(4)(a).
692 GC IV, Art. 5(3).

DETENTION AND INTERNMENT 203

of the detaining power, both in terms of scope and of duration.693 Moreover,
the terms of the derogation clause itself, most notably the reservations guar-
anteeing humane treatment and a fair and regular trial, and the continuing
obligation of the detaining power to provide information on every internee,
effectively ensure that this clause cannot be used to formally justify any
form of secret detention, ill-treatment or summary justice.

(f ) Relations with the authorities
Petitions, complaints and internee committees
Internees have an unrestricted right to file petitions and complaints with
the detaining authorities or the Protecting Power with regard to their con-
ditions of internment.694 Their interests are represented before the detaining
authorities, the Protecting Power, the ICRC and other relevant organiza-
tions by an internee committee freely elected by the internees themselves
and approved by the detaining authorities.695 Internee committees may send
periodic reports on the situation and needs in places of internment to the
Protecting Power,696 and the detaining power must afford them the time,
facilities and freedom of movement they need to accomplish their duties in
terms of inspection, representation and communication.697

Disciplinary and judicial authority
Within the boundaries of IHL, internees are subject to the laws in force
in the territory in which they are detained.698 In some respects, however,
internees receive preferential treatment. For example, the Fourth Geneva
Convention provides that, when fixing the penalty for an offence committed
by an internee, the courts or authorities must take into account that the
defendant is not a national of the detaining power and should not be bound
by the minimum penalties prescribed in national law.699 The detaining
power must also notify the internee committee of any judicial proceedings
instituted against any internee, and of their result.700

Disciplinary procedures
The judicial guarantees and the rules governing the execution of penal sanc-
tions against internees are the same as those afforded to protected persons

693 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 56.
694 GC IV, Art. 101.
695 GC IV, Arts 102 and 103.
696 GC IV, Art. 101(4).
697 GC IV, Art. 104.
698 GC IV, Art. 117(1).
699 GC IV, Art. 118(1).
700 GC IV, Art. 118(5).

204 CHAPTER 5

who are not interned.701 As far as disciplinary procedures are concerned,
internees benefit from a number of judicial guarantees listed in the Fourth
Geneva Convention.702 The commander of the place of internment must
maintain a record of disciplinary punishments, which must be open to
inspection by representatives of the Protecting Power.703

Prohibition of cruel, inhuman or degrading punishment
Any internee convicted for a disciplinary or criminal offence remains under
the protection of IHL, also as far as the choice and execution of the penalty
is concerned. Most importantly, disciplinary punishments may in no case
be inhuman, brutal or dangerous to the health of internees,704 and collective
punishment for individual acts,705 corporal punishment,706 imprisonment in
premises without daylight, and, in general, all forms of cruelty are prohib-
ited without exception.707 Finally, internees who have served disciplinary or
judicial sentences may not be treated differently from other internees. 708

(g) Transfers of internees
In principle, the detaining power may lawfully transfer internees between
places of internment, whether within the territory under its control or to
another country willing and able to afford the internees the protection
they are entitled to under IHL. This possibility is subject to two important
restrictions. First, protected persons may not be transferred or deported
from occupied territory.709 Second, the principle of non-refoulement applies
to all transfers or deportations.710 When internees are lawfully transferred to
another State, the responsibility for their protection passes to the receiving
State for such time as they are in its custody. If that State fails to fulfil its
obligations under IHL in any important respect, however, the original
detaining power must take effective measures to correct the situation or
ensure that the internees in question are returned to its jurisdiction.711 Any
such transfer of internees must be conducted humanely and under conditions
at least equal to those applied to the armed forces of the detaining power
during their changes of station. In particular, internees must be provided

701 See Chapter 6.I.1.
702 GC IV, Arts 117(3), 123(2) and 124(1).
703 GC IV, Art. 123(5).
704 GC IV, Art. 119(2); CIHL, Rule 90.
705 GC IV, Art. 33; CIHL, Rule 103.
706 GC IV, Art. 32; CIHL, Rule 91.
707 GC IV, Art. 118(2); CIHL, Rule 90.
708 GC IV, Art. 118(3).
709 GC IV, Art. 49; CIHL, Rule 129 A. See Chapter 6.III.2.c.
710 GC IV, Art. 45(4). See Chapter 6.II.2.
711 GC IV, Art. 45(3).

DETENTION AND INTERNMENT 205

with adequate means of transport, and with the necessary food, water,
clothing and medical care. Moreover, suitable precautions must be taken to
ensure the safety of protected persons.712

3. Criminal procedures and detention
In parallel to internment as a preventive security measure, parties to an
international armed conflict must run a detention system for the inves-
tigation, trial and punishment of criminal offences by protected persons,
whether in occupied territory or within their national borders. Of course,
protected persons who are detained continue to benefit from the general
protection afforded by the Fourth Geneva Convention, particularly as con-
cerns humane treatment.

Judicial guarantees
The Fourth Geneva Convention and Additional Protocol  I formulate the
fundamental fair-trial guarantees for the prosecution and punishment of
criminal offences related to the armed conflict.713 These guarantees are con-
sidered to have attained customary nature in both international and non-in-
ternational armed conflicts.714 As a matter of procedure, anyone accused of
a criminal offence related to the armed conflict must be presumed innocent
until proved guilty according to law.715 He must be informed without delay
of the allegations brought against him and must be afforded all the means
and rights necessary to prepare and conduct his defence.716 In particular, he
is entitled to be tried in his presence717 and must be permitted to examine
witnesses.718 No one can be convicted of an offence except on the basis of
individual penal responsibility,719 and no one can be compelled to testify
against himself or to confess guilt.720 No one can be prosecuted or punished
more than once for the same offence,721 or for an act or omission that did
not constitute a criminal offence when it was committed.722 Also, no heavier
penalty may be imposed than was permissible at the time of the offence, and
offenders must benefit from changes in the law providing for the possibility

712 GC IV, Art. 127.
713 GC IV, Arts 71–76 and 126; AP I, Art. 75(4).
714 CIHL, Rule 100 and commentary.
715 AP I, Art. 75(4)(d); CIHL, Rule 100.
716 GC IV, Arts 71(2) and 72; AP I, Art. 75(4)(a); CIHL, Rule 100.
717 AP I, Art. 75(4)(e); CIHL, Rule 100.
718 GC IV, Art. 72; AP I, Art. 75(4)(g); CIHL, Rule 100.
719 AP I, Art. 75(4)(b); CIHL, Rule 102.
720 AP I, Art. 75(4)(f ); CIHL, Rule 100.
721 AP I, Art. 75(4)(h); CIHL, Rule 100.
722 AP I, Art. 75(4)(c); CIHL, Rule 101.

206 CHAPTER 5

of a lighter penalty than was permissible at the time of the offence.723 The
Fourth Geneva Convention and Additional Protocol I also contain specific
provisions on the death penalty; Additional Protocol  I imposes specific
restrictions in this respect with regard to pregnant women and mothers of
dependant infants and children under 18 years of age.724 Finally, any person
convicted of an offence must be advised of his judicial and other remedies725
and is entitled to have the judgment pronounced publicly.726 In principle, rep-
resentatives of the Protecting Power are entitled to attend the trial of any pro-
tected person. Exceptions can be made only where security considerations
absolutely require closed hearings.727

Conditions of detention
In situations of belligerent occupation, protected persons accused of offences
must be detained and, if convicted, serve their sentences within the occu-
pied country.728 As their offences will often be rooted in patriotic motives,
they should, to the extent possible, be separated from other detainees.729
Wherever protected persons are detained, women must be held in sepa-
rate quarters from men, under the direct supervision of other women.730
Similarly, children held for reasons related to the armed conflict must be
accommodated separately from adults731 and must be afforded the special
treatment required by their age.732 All protected persons detained must be
afforded conditions of detention that are at least equal to those prevailing
in other prisons in the relevant territory. In all cases, they must “enjoy con-
ditions of food and hygiene which will be sufficient to keep them in good
health,”733 and must be permitted to receive spiritual assistance,734 and at
least one individual relief parcel per month.735 Protected persons who are
detained have the same right as internees to be visited by delegates of the
Protecting Power and of the ICRC.736

723 AP I, Art. 75(4)(c); CIHL, Rule 101.
724 GC IV, Art. 75; AP I, Arts 76(2) and (3), and 77(5); CIHL, Rule 134.
725 GC IV, Art. 73; AP I, Art. 75(4)(j); CIHL, Rule 100.
726 AP I, Art. 75(4)(i); CIHL, Rule 100.
727 GC IV, Arts 71(2) and 74; CIHL, Rule 100.
728 GC IV, Art. 76(1).
729 GC IV, Art. 76(1).
730 GC IV, Art. 76(4); AP I, Art. 75(5); CIHL, Rule 119.
731 AP I, Art. 77(4); CIHL, Rule 120.
732 GC IV, Art. 76(5).
733 GC IV, Art. 76(1) and (2); CIHL, Rule 118.
734 GC IV, Art. 76(3).
735 GC IV, Art. 76(7).
736 GC IV, Art. 76(6); CIHL, Rule 124.

DETENTION AND INTERNMENT 207

End of detention
At the end of an occupation, protected persons accused of offences or convicted
by the courts in occupied territory must be handed over, with the relevant
records, to the authorities of the liberated territory.737 Protected persons
detained in relation to criminal offences within the territory of a party to the
conflict may ask to leave such territory as soon as they are released.738 In any
case, protected persons who are detained pending penal proceedings or serving
a sentence for a criminal offence continue to benefit from the protection of the
Fourth Geneva Convention until their final release, repatriation or return to
their place of residence, even after the end of an armed conflict.739 Persons
detained for reasons related to an armed conflict without being entitled to
a status specifically protected under the Geneva Conventions, such as the
detaining power’s own nationals who may have collaborated with the enemy,
likewise benefit from the fundamental guarantees of IHL with regard to humane
treatment and fair trial until their final release, repatriation or return.740741

737 GC IV, Art. 77.
738 GC IV, Art. 37(2).
739 GC IV, Art. 6(4).
740 AP I, Art. 75(6); CIHL, Rule 87.
741 All ICRC documents available at: www.icrc.org

To go further (Internment and detention of civilians)741

• Cordula Droege, “Transfer of detainees: Legal framework, non-refoulement
and contemporary challenges,” IRRC, Vol. 90, No. 871, September 2009,
pp. 669–701.

• Jelena Pejic, “Procedural principles and safeguards for internment/adminis-
trative detention in armed conflict and other situations of violence,” IRRC,
Vol. 87, No. 858, June 2005, pp. 375–391.

• Ryan Goodman, “The detention of civilians in armed conflicts,” American
Journal of International Law, Vol. 103, No. 1, January 2009, pp. 48–74.

• Ministry of Foreign Affairs of Denmark, “The Copenhagen Process on the
handling of detainees in international military operations,” Revue de droit
militaire et de droit de la guerre, Vol. 3–4, No. 46, 2007, pp. 363–392.

208 CHAPTER 5

IV. SPECIFIC ISSUES ARISING
IN NON-INTERNATIONAL ARMED CONFLICTS

1. Lack of status and privilege
IHL governing non-international armed conflicts uses the terms “civilian,”
“armed forces,” “dissident armed forces” and “organized armed groups,” but
distinguishes between these categories of person primarily for the purposes
of the conduct of hostilities, and without any implications for the rights and
treatment of those deprived of their liberty.742 This means that the rules of
IHL governing the protection of persons deprived of their liberty for reasons
related to non-international armed conflicts are equally applicable to all
persons captured, detained or interned, regardless of their status or involve-
ment in the conduct of hostilities, and regardless of whether they are held by
a State or by non-State parties.743

It also means that, in non-international armed conflicts, IHL provides no
privilege of combatancy granting immunity from prosecution for lawful
acts of war. Consequently, any person having directly participated in hos-
tilities in a non-international armed conflict remains exposed to the full
force of the applicable national law. Normally, any harm caused by the gov-
ernmental armed forces and police in compliance with IHL will be justified
under national law as lawful acts of the State, whereas any harm caused by
non-State armed groups and civilians supporting them will generally be
subject to prosecution under the standard provisions of national law. IHL
simply recommends that, at the end of hostilities, the authorities in power
“endeavour to grant the broadest possible amnesty to persons who have par-
ticipated in the armed conflict, or those deprived of their liberty for reasons

742 See GC I–IV, common Art. 3(1); AP II, Arts 1(1) and 13(1).
743 GC I–IV, common Art. 3(1); AP II, Arts 4 and 5; CIHL, Rules 87 and 118–128.

How Does Law Protect in War?

• Case No. 121, Bangladesh/India/Pakistan, 1974 Agreement

• Case No. 130, Israel, Methods of Interrogation Used Against Palestinian
Detainees

• Case No. 162, Eritrea/Ethiopia, Award on Civilian Internees and Civilian
Property

• Case, ECHR, Al-Jedda v. UK (only available online)

DETENTION AND INTERNMENT 209

related to the armed conflict,” with the exception of persons suspected of,
accused of or sentenced for war crimes.744

2. Treatment, conditions and procedures

(a) Treatment and conditions of detention or internment
As we have seen, in situations of non-international armed conflict, common
Article 3 and Article 4 of Additional Protocol II contain fundamental guar-
antees for all persons not or no longer taking a direct part in hostilities.
Article 5 of Additional Protocol  II contains additional provisions aimed
at ensuring a minimum standard of humane treatment for persons who
are interned or detained for reasons related to a non-international armed
conflict.745

Accordingly, to the same extent as the local civilian population, detain-
ees and internees must be provided with food, drinking water, hygiene and
health care, and protected against the weather and the dangers arising from
the armed conflict.746 The wounded and sick must receive the medical care
required by their condition, without any distinction among them other than
on medical grounds.747 No persons deprived of their liberty may be subjected
to medical procedures that are not required by their state of health or that
are inconsistent with generally accepted medical standards.748 Detainees and
internees must be allowed to receive individual or collective relief shipments,
to practice their religion and to receive spiritual assistance.749 If made to work,
their working conditions and safeguards must be similar to those enjoyed by
the local civilian population.750 Moreover, except when families are accom-
modated together, women must be held in quarters separate from those of
men and under the immediate supervision of other women.751 Subject to the
restrictions deemed necessary by the competent authority, detainees and
internees must also be allowed to communicate with the world outside.752

744 AP II, Art. 6(5); CIHL, Rule 159.
745 AP II, Art. 5(1); CIHL, Rule 87.
746 AP II, Art. 5(1); CIHL, Rule 118.
747 AP II, Arts 5(1)(a) and 7(2); CIHL, Rule 88.
748 AP II, Art. 5(2)(e); CIHL, Rule 92.
749 AP II, Art. 5(1)(c)(d); CIHL, Rule 127.
750 AP II, Art. 5(1)(e); CIHL, Rule 95.
751 AP II, Art. 5(2)(a); CIHL, Rule 119.
752 AP II, Art. 5(2)(b); CIHL, Rule 125.

210 CHAPTER 5

Places of internment and detention must be situated at a safe distance from
the combat zone and, when they become particularly exposed to dangers
arising from the armed conflict, evacuated, provided that such evacuation
can be carried out under adequate conditions of safety.753 Likewise, once
persons deprived of their liberty are released, those responsible for the deci-
sion must do what is needed to ensure their safety.754

Finally, persons whose liberty is restricted by security measures such as house
arrest, assigned residence or other forms of surveillance not involving physical
custody must be afforded the same protections as detainees and internees except,
of course, the provisions related to the material conditions of their detention.755

(b) Judicial guarantees and procedural safeguards
In situations of non-international armed conflict, administrative and judi-
cial procedures, along with the determination and execution of sanctions by
the State authorities concerned, are generally regulated by national law. IHL
is not intended to replace such national provisions; instead, it seeks to estab-
lish a minimum standard that must be respected by all parties to a conflict,
including organized armed groups, regardless of national law.

Judicial guarantees in penal proceedings
Common Article 3 prohibits “the passing of sentences and the carrying out of
executions without previous judgment pronounced by a regularly constituted
court, affording all the judicial guarantees which are recognized as indispensa-
ble by civilized peoples.”756 Article 6 of Additional Protocol II further develops
this requirement and formulates the most fundamental fair-trial guarantees
for the prosecution and punishment of criminal offences related to the con-
flict.757 Accordingly, courts adjudicating criminal cases must offer guarantees
of independence and impartiality, allow the accused to be tried in his presence
and presume his innocence until proved guilty according to law. As a matter
of procedure, the accused must be informed without delay of the allegations
against him and must be afforded all the means and rights necessary to prepare
and conduct his defence. No one can be convicted of an offence except on
the basis of individual penal responsibility, and no one can be compelled to
testify against himself. No one can be held guilty for any act or omission that
did not constitute a criminal offence at the time it was committed, and no
heavier penalty may be imposed than was permissible at the time of the offence.

753 AP II, Art. 5(2)(c); CIHL, Rule 121.
754 AP II, Art. 5(4).
755 AP II, Art. 5(3); Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the

Additional Protocols, op. cit. (note 6), para 4595.
756 GC I–IV, common Art. 3(1).
757 AP II, Art. 6(1).

DETENTION AND INTERNMENT 211

Offenders must benefit from changes in the law providing for the possibility of
a lighter penalty than was permissible at the time of the offence.758 In no case
can the death penalty be pronounced on persons who were under the age of
18 at the time of the offence, or carried out on pregnant women or mothers
of young children.759 Any person convicted of an offence must be advised of
his judicial and other remedies.760 In this context, it should also be pointed
out that excessively long conflict-related judicial proceedings can have severe
humanitarian consequences for the individual concerned. They will also have
very serious consequences for the proper functioning of places of detention:
Rwanda and the Philippines are recent examples of States affected by inter-
nal armed conflicts where delays in the processing of judicial cases contrib-
uted to significant problems of overcrowding in various places of detention.761

Procedural safeguards for internment
While IHL governing non-international armed conflicts clearly refers to the
possibility of internment,762 i.e. of preventive detention for security reasons
without criminal charge, it fails to expressly regulate internment. While
there can be no doubt that internees benefit from the general provisions
governing the treatment and conditions of detention of persons deprived of
their liberty in non-international armed conflicts, treaty IHL remains silent
as to the procedural safeguards afforded to internees during procedures
concerning the initiation and review of their internment. Some guidance
can be drawn from the rules applicable to internment in situations of
international armed conflict. After all, common Article 3 encourages parties
to a conflict to conclude special agreements giving effect to all or part of the
other provisions of the Conventions in non-international armed conflicts
as well.763 In the view of the ICRC, the most important of these provisions
have in any case attained customary nature in non-international armed
conflicts, too.764 At least to the extent that they are designed to safeguard the
principles of humanity and the dictates of public conscience referred to in
the Martens Clause, they would arguably have to be regarded as binding also
in non-international armed conflicts.765 For example, it would be difficult
to reconcile a person’s indefinite internment for security reasons with
elementary considerations of humanity, unless the continued existence of

758 AP II, Art. 6(2); CIHL, Rule 101.
759 AP II, Art. 6(4).
760 AP II, Art. 6(3); CIHL, Rule 100.
761 See “Philippines: Protecting life and dignity in places of detention,” ICRC operational up-

date, 3 February 2010, and “Rwanda: 1995 Retrospective Newsletter,” ICRC, 26 January 1996.
762 AP II, Art. 5.
763 GC I–IV, common Art. 3(3).
764 CIHL, Rule 99.
765 For more details on the Martens Clause, see Chapter 1.II.3.

212 CHAPTER 5

the security threat justifying such a measure is the object of periodic reviews
by a competent court or administrative body. Also, wherever IHL governing
international armed conflicts refers to internment, it describes it as the most
severe security measure at the disposal of a belligerent party, one that may
be taken only for imperative reasons of security subject to periodic review.766
It may reasonably be concluded, therefore, that internment must always
remain a temporary measure of last resort in non-international armed
conflicts as well. Of course, when persons are interned by a governmental
party to a conflict, they will also benefit from the protection of human
rights law and the standards developed in the case-law of treaty-based
human rights bodies. Thus, both IHL and human rights law complement
national law in regulating internment and other forms of security detention
in situations of non-international armed conflict.

766 GC IV, Arts 41(1) and 78(1).

Detainees return to Rubavu Prison, in Ginsenyi, Rwanda, after a day’s work, 2014.

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Textbox 8: Procedural safeguards
for internment/administrative detention

In 2005, the ICRC adopted an institutional legal and policy position entitled “Procedural
Principles and Safeguards for Internment/Administrative Detention in Armed Conflict
and Other Situations of Violence.” This document was annexed to an ICRC report, IHL
and the Challenges of Contemporary Armed Conflicts, that was presented to the 30th
International Conference of the Red Cross and Red Crescent in 2007; it provides guidance
to the ICRC’s delegations in their operational dialogue with States and non-State armed
groups.767 In 2011, another ICRC report, entitled Strengthening Legal Protection for Victims
of Armed Conflicts, was submitted to the 31st International Conference: it identified the
protection of persons deprived of their liberty, including procedural safeguards in intern-
ment, as one of four areas that should be strengthened by developing existing IHL.768 The
Conference adopted a resolution inviting the ICRC to continue its efforts, in consultation
with States and other parties, “to identify and propose a range of options and its rec-
ommendations to: (…) ensure that international humanitarian law remains practical and
relevant in providing legal protection to all persons deprived of their liberty in relation
to armed conflict.”769 After having made its recommendations to the 32nd International
Conference in December 2015, the ICRC was invited to continue its work to facilitate con-
sultations on this issue, with a view to producing concrete and implementable outcomes,
though of a legally non-binding nature.

• For further details, see the 2005 position paper entitled “Procedural Principles
and Safeguards for Internment/Administrative Detention in Armed Conflict
and Other Situations of Violence,” available at: https://www.icrc.org/eng/as-
sets/files/other/irrc_858_pejic.pdf

• See also “Detention in non-international armed conflict: The ICRC’s work on
strengthening legal protection,” webpage, ICRC. Available at: https://www.
icrc.org/eng/what-we-do/other-activities/development-ihl/strengthening-le-
gal-protection-ihl-detention.htm

767 768 769

767 Jelena Pejic, “Procedural principles and safeguards for internment/administrative de-
tentionn in armed conflict and other situations of violence,” IRRC, Vol. 87, No. 858, June
2005, pp. 375–391.

768 31st International Conference of the Red Cross and Red Crescent, Geneva, Draft Resolu-
tion and Report, Strengthening legal protection for victims of armed conflicts, October 2011.
Available at: http://www.icrc.org/eng/assets/files/red-cross-crescent-movement/31st-inter-
national-conference/31-int-conference-strengthening-legal-protection-11-5-1-1-en.pdf

769 31st International Conference of the Red Cross and Red Crescent, Geneva, 28 Novem-
ber–1 December 2011, Resolution 1, Strengthening legal protection for victims of armed
conflicts, para. 6. Available at: http://www.icrc.org/eng/resources/documents/resolu-
tion/31-international-conference-resolution-1-2011.htm

214 CHAPTER 5

(c) Transfers of detainees
For the present purposes, the term “transfer” is used in the broadest possible
sense, covering any handover of a person from the control of one belligerent party
to that of another State or other authority, regardless of whether the individual
crosses an international border. The transfer of persons deprived of their liberty
has emerged as one of the defining features of non-international armed conflicts
over the past decade, especially where multinational forces or extraterritorial mili-
tary operations are concerned. Even in purely internal armed conflicts, the phe-
nomenon of foreign nationals joining armed groups has increased the likelihood
of States transferring conflict-related detainees back to their home governments.

Of course, humanitarian concerns about how detainees might be treated after
they are handed over to another authority or government are not new. For
instance, the Third and Fourth Geneva Conventions place specific constraints
on the transfer of individuals to other States and impose obligations to ensure
their appropriate treatment after transfer. Furthermore, detainees remain
protected under the principle of non-refoulement, according to which no
person may be transferred to a country or authority where he or she might
be in danger of being subjected to torture or other forms of ill-treatment,
arbitrary deprivation of life or persecution on account of his or her race,
religion, nationality, political opinion or membership in a particular social
group. The principle of non-refoulement is expressed, with some variation
in scope, in a number of international legal instruments, including in IHL,
refugee law, international human rights law, and some extradition treaties.
It is also an essential principle of customary international law. Treaty IHL
applicable in non-international armed conflicts contains no express reference
to the principle of non-refoulement; but it would be consistent with the
categorical prohibitions set out in common Article 3 to understand that
provision as prohibiting the transfer of persons to places where there are
substantial grounds for believing they will be in danger of being subjected to
violence to life and person, such as torture and other forms of ill-treatment,
or even murder.

➝ On transfers in situations of international armed conflict, see Sections
II.2.c (prisoners of war) and III.2.g (civilian internees) above.

3. Detention by non-State armed groups
By definition, all non-international armed conflicts involve at least one non-
State armed group. This means that IHL must also regulate the treatment
and protection of persons held by such groups.

DETENTION AND INTERNMENT 215

(a) Distinguishing hostage-taking from other forms of detention
In practice, when government soldiers or civilians are captured and detained by
non-State armed groups, States are often quick to accuse the latter of hostage-
taking, an act that common Article 3 prohibits in all circumstances. While this
description may be accurate as a matter of national criminal law, the concept of
hostage-taking within the meaning of international law is far more restrictive.
Although common Article  3 prohibits hostage-taking in all circumstances,
the relevant definition is not found in IHL, but in international criminal law.
Accordingly, hostage-taking is understood to denote the seizure or detention
of any person, irrespective of status, combined with the threat to kill, injure or
continue to detain the hostage, in order to compel a third party to do, or to
abstain from doing, any act as an explicit or implicit condition for the release
(or safety) of the hostage.770 It is this specific intent that distinguishes hostage-
taking from other forms of deprivation of liberty for reasons related to an armed
conflict.771

(b) Interpreting the obligations of non-State armed groups
It may legitimately be asked to what extent it is realistic to expect dissident
armed forces or organized armed groups to afford the protection of IHL to
captured government soldiers or other persons in their custody. Clearly, the
answer very much depends on the circumstances of each case. While a well-
organized non-State armed group controlling part of a State’s territory for a
prolonged period can be expected to respect and implement its obligations
under IHL to the letter, it may be significantly more difficult to do so for
loosely organized armed groups operating clandestinely and without any
significant control over territory or infrastructure. Of course, the fundamental
guarantees of humane treatment certainly constitute absolute minimum
standards to be respected by all weapon-bearers in all circumstances. It
is less certain, however, that unsophisticated non-State armed groups can
realistically be expected to afford persons in their custody the right to send
and receive correspondence, to receive relief parcels, or to undergo regular
medical examinations. Even where such groups exercise effective control over
part of a State’s territory, it remains open to doubt whether they could ever,
as a matter of law, conduct valid judicial proceedings in accordance with the
procedural requirements of IHL. The most realistic interpretation of the law
as it currently stands probably would be that non-State armed groups must
provide for the basic needs of persons detained by them to the same extent

770 Rome Statute, Art. 8(2)(a)(viii) and (c)(iii); International Criminal Court, Elements of
Crimes, War crime of taking hostages, Official Records of the Assembly of States Parties to the
Rome Statute of the International Criminal Court, First Session, 3–10 September 2002. See also
International Convention against the Taking of Hostages, 17 December 1979, Art. 1.

771 CIHL, commentary on Rule 96.

216 CHAPTER 5

as for those of the civilian population under their control or, in the absence
of such control, to the same extent as for those of their own members.772

773

772 AP II, Art. 5(1)(b); CIHL, commentary on Rule 118.
773 All ICRC documents available at: www.icrc.org

To go further (Specific issues arising in non-international armed conflicts)773

• Burundi: What the ICRC does for detainees during prison visits, film, ICRC,
2013. Available at: http://www.youtube.com/watch?v=vz1hhR5u9pA

• “Expert meeting on procedural safeguards for security detention in non-
international armed conflict, Chatham House and International Committee
of the Red Cross, London, 22–23 September 2008,” IRRC, Vol. 91, Number
876, December 2009, pp. 859–881.

• Deborah Casalin, “Taking prisoners: Reviewing the international
humanitarian law grounds for deprivation of liberty by armed opposition
groups,” IRRC, Vol. 93, No. 883, September 2011, pp. 743–757.

• David Tuck, “Detention by armed groups: Overcoming challenges to humani-
tarian action,” IRRC, Vol. 93, No. 883, September 2011, pp. 759–782.

• John B. Bellinger and Vijay M. Padmanabhan, “Detention operations in
contemporary conflicts: Four challenges for the Geneva Conventions and
other existing law,” American Journal of International Law, Vol. 105, No. 2,
April 2011, pp. 201–243.

• Knut Dörmann, “Detention in non-international armed conflicts,”
International Law Studies, Vol. 88, 2012, pp. 347–366.

How Does Law Protect in War?

• Document No. 269, United States, Treatment and Interrogation in Detention

• Case No. 243, Colombia, Constitutional Conformity of Protocol  II, in
particular question 7 b) and c)

• Case No. 260, Afghanistan, Code of Conduct for the Mujahideen

Chapter 6
Civilians in enemy-
controlled territory

Viet Nam, 1972. Children in the south cross paths with US soldiers.

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220 CHAPTER 6

Structure
I. General protection of civilians in the power of the enemy
II. Enemy nationals in the territory of a belligerent party
III. Inhabitants of occupied territories
IV. Humanitarian assistance
V. Specific issues arising in non-international armed conflicts

In a nutshell

➝ All civilians who find themselves in enemy-controlled territory
must be treated humanely in all circumstances, and no security
measures more severe than assigned residence or internment
may be imposed on them.

➝ In occupied territories, the occupying power represents a de
facto administrative authority that has a temporary right and
duty to maintain public order and safety in accordance with the
local laws already in force, but that may not introduce perman-
ent changes to the social, demographic, geographical, political
or economic order of the territory.

➝ IHL prohibits the use of starvation of the civilian population
as a method of warfare, and obliges belligerent parties and
non-belligerent States to allow and facilitate the delivery of
impartial humani tarian relief consignments for any civilian
popu lation affected by a situation of international armed con-
flict.

➝ In situations of non-international armed conflict, the protec-
tion afforded by IHL is not tied to nationality, allegiance or
status, but extends to all persons who are not, or no longer,
taking a direct part in the hostilities.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 221

774

In the course of armed conflicts, the civilian population or individual
civilians often find themselves within territory controlled by an adverse
belligerent party. In international armed conflicts, this may be because the
national territory of one State has been invaded and occupied by another, or
because nationals of one belligerent party reside in the territory of another.
In non-international armed conflicts, the belligerents and the civilian popu-
lation generally have the same nationality, but may be divided into factions
along ethnic, religious or political lines. Wherever civilians, their families
and property find themselves in the effective military and administrative
control of a belligerent enemy, there is a great risk that they will be treated
arbitrarily and abused. Moreover, civilians affected by armed conflict are
regularly deprived of the most basic goods and services essential to their
survival, particularly where hostilities have caused a breakdown of public
security and infrastructure, or where parts of the population have been dis-
placed. In such situations, starvation, sickness and crime quickly take their
toll and require, at the very least, immediate humanitarian assistance from
the outside. IHL therefore devotes considerable attention to the protection
of civilians who have fallen into the power of a belligerent party and to the
duty of belligerents to allow and facilitate humanitarian assistance to any
civilian population in need as a result of an armed conflict.

774 All ICRC documents available at: www.icrc.org

To go further774

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 8: The protection of civilians,
pp. 211–248.

• ICRC, Enhancing Protection for Civilians in Armed Conflict and Other
Situations of Violence, ICRC, 2012, 90 pp.

• “Civilians,” webpage, ICRC. Available at: https://www.icrc.org/en/war-and-
law/protected-persons/civilians

How Does Law Protect in War?

• Case No. 61, UN, Secretary-General’s Reports on the Protection of Civilians
in Armed Conflict

222 CHAPTER 6

I. GENERAL PROTECTION OF CIVILIANS
IN THE POWER OF THE ENEMY

The fundamental rules and principles of IHL governing the protection of
civilians who find themselves in the power of a belligerent party, whether
in its national territory or in occupied territory, are laid down in Articles 27
to 34 of the Fourth Geneva Convention and Articles 72 to 79 of Additional
Protocol I. Today, most of these provisions are recognized as having attained
the status of customary law.775

1. Protected persons
In situations of international armed conflict, the main legal instrument
protecting civilians in the power of the enemy is the Fourth Geneva
Convention. As we saw in Chapter 5, this Convention focuses on the
protection of persons who are not entitled to prisoner-of-war status and
“who, at a given moment and in any manner whatsoever, find themselves,
in case of a conflict or occupation, in the hands of a Party to the conflict or
Occupying Power of which they are not nationals.”776 Thus, the notion of
“protected person” within the meaning of the Fourth Geneva Convention
includes not only peaceful civilians, but also civilians who have directly
participated in hostilities and, in principle, even members of the armed
forces who for some reason have lost their entitlement to prisoner-of-war
status.

➝ On entitlement to prisoner-of-war status, see Chapter 5.I.2.

The Fourth Geneva Convention does not, however, oblige belligerent States
to protect their own nationals, the nationals of neutral States within their
territory, or the nationals of co-belligerent States, provided normal diplo-
matic relations are maintained with the State of nationality.777

➝ On the precise scope of protection of the Fourth Geneva Convention,
see Chapter 5.I.3.

It must be emphasized that even persons who fail to qualify both for
prisoner-of-war status and for protection under the Fourth Geneva Con-
vention remain protected by IHL. Most notably, Additional Protocol I provides
that all persons affected by an international armed conflict who are in the
power of a belligerent party, and who do not benefit from more favourable
treatment under a specific status regime of IHL, must be treated humanely

775 CIHL, Rules 52, 87–105 and 146.
776 GC IV, Art. 4(1) and (4).
777 GC IV, Art. 4(2). However, see also ICTY, The Prosecutor v. Dusko Tadić, op. cit. (note 69),

paras 163–169.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 223

in all circumstances and must benefit, as a minimum, from a number of fun-
damental guarantees, including judicial guarantees, that have become part of
customary international law.778 Moreover, there is a growing consensus that
all persons finding themselves within the effective territorial control or phys-
ical custody of a belligerent State must be regarded as being within the juris-
diction of that State and, therefore, as benefiting from the protection of
international human rights law. In sum, no persons finding themselves in the
power of a party to an international armed conflict can fall outside the pro-
tection of IHL.

2. Basic duties and responsibilities of belligerents
Irrespective of any individual responsibilities that may exist, belliger-
ent parties remain responsible for the treatment accorded by their agents
to persons in their power.779 Persons in the power of an adverse party to a
conflict may in no circumstances, not even voluntarily, renounce the rights
secured to them under IHL.780

(a) Humane treatment and non-discrimination
Persons who are in the power of a belligerent party must be treated humanely
at all times. In particular, they are entitled to respect for their person, honour,
family rights, religious convictions and practices, and for their manners and
customs, and must be protected against all acts or threats of violence, insults
and public curiosity.781 Accordingly, the following acts – or threats thereof –
are prohibited “at any time and in any place whatsoever, whether committed
by civilian or by military agents”:782

• violence to life and health, in particular murder, corporal punish-
ment, physical or mental torture and mutilation;783

• pillage and outrages upon personal dignity, in particular humiliating
or degrading treatment, and any form of sexual violence or abuse;784

• physical or moral coercion, in particular reprisals, hostage-taking,
collective punishment, and measures of intimidation or terrorism.785

Differences in treatment may sometimes be justifiable on the grounds of
health, age or sex; however, in all other circumstances, discrimination – on

778 See, in particular, AP I, Art. 75, and CIHL, Rules 87–105.
779 GC IV, Art. 29.
780 GC IV, Art. 8.
781 GC IV, Art. 27(1); AP I, Art. 75(1); CIHL, Rules 87 and 104–105.
782 AP I, Art. 75(2).
783 GC IV, Art. 32; AP I, Art. 75(2)(a); CIHL, Rules 89–92.
784 GC IV, Arts 27(2) and 33(2); AP I, Art. 75(2)(b); CIHL, Rules 52, 90 and 93.
785 GC IV, Arts 31, 33 and 34; AP I, Art. 75(2)(c), (d) and (e); CIHL, Rules 96, 103 and 146.

224 CHAPTER 6

the basis of race, colour, sex, language, religion or belief, political or other
opinion, national or social origin, wealth, birth or other status, or on any
other similar criteria – is strictly prohibited.786

(b) Right to communicate

Communication with Protecting Powers or the ICRC
Civilians in territory controlled by an adverse party to a conflict have
the right to communicate individually or collectively with the Protecting
Powers, the ICRC, the National Societies or any other organization able to
assist them. Such communication may include suggestions, complaints, pro-
tests or requests for assistance, or take any other form appropriate in the
circumstances.787 Belligerent parties must facilitate visits by delegates of the
Protecting Powers and of the ICRC, and, as much as possible, by represent-
atives of other relief organizations.788

Maintaining and restoring family links
All persons in the territory controlled by a belligerent party must be enabled
to give news of a strictly personal nature to members of their families, wher-
ever they may be, and to receive news from them,789 if necessary through
the assistance of the Central Tracing Agency and the National Societies.790
The belligerent parties must also facili tate enquiries by members of families
dispersed by the war, so that they can renew contact with one another and
meet, if possible. The belligerent parties must encourage, in particular, the
work of organizations engaged in this task, provided those organizations are
acceptable to them and comply with their security regulations.791

792

786 GC IV, Arts 13 and 27(3); AP I, Art. 75(1); CIHL, Rule 88.
787 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 214.
788 GC IV, Art. 30.
789 GC IV, Art. 25(1); CIHL, Rule 105.
790 GC IV, Art. 25(2).
791 GC IV, Art. 26.
792 All ICRC documents available at: www.icrc.org

To go further (Restoring family links)792

• Afghanistan: Helping Families Stay in Touch, film, ICRC, February 2014.
Available at: http://www.youtube.com/watch?v=XaNgpy3f1GQ

• ICRC e-learning course, Restoring Family Links and Psychosocial Support.
Available at: http://familylinks.icrc.org/en/Pages/NewsAndResources/Re-
sources/E-learning-RFLPSS.aspx

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 225

3. Right to take security measures
While IHL requires belligerent parties to respect and protect the civilian
population in territory under their control, it also expressly recognizes their
right to “take such measures of control and security in regard to protected
persons as may be necessary as a result of the war.”793 Depending on the
circumstances, this may include a ban on carrying firearms, restrictions of
movement within or outside certain areas, a duty to carry identity docu-
ments, or restrictions on political activities or on certain professions. While
IHL does not provide an exhaustive list of permissible security measures, it
specifies that, in any event, the most severe measures that may be imposed
are those of assigned residence and internment (on internment, see Chapter
5).794 The implicit criterion of necessity further suggests that security meas-
ures may not exceed what is reasonably required to achieve a legitimate
security purpose in the circumstances. Also, regardless of any actual or
perceived necessity, all security measures, including their specific purposes,
components and foreseeable consequences, must always remain within the
limits set by the fundamental guarantees and specific prohibitions derived
from the general duty of humane treatment.795 In sum, therefore, the broad
wording of this provision may leave belligerent parties a considerable

793 GC IV, Art. 27(4).
794 GC IV, Arts 41 and 78(1).
795 See Section 2.a.

• Olivier Dubois, Katharine Marshall and Siobhan Sparkes McNamara, “New
technologies and new policies: the ICRC’s evolving approach to working with
separated families,” IRRC, Vol. 94, No. 888, December 2012, pp. 1455–1479.

• ICRC, Restoring Family Links Strategy, ICRC, Geneva, 2009, 64 pp.

• ICRC, Accompanying the Families of Missing Persons: A Practical Handbook,
ICRC, Geneva, 2013, 158 pp.

• “Restoring Family Links,” webpage, ICRC. Available at: http://www.icrc.org/
eng/what-we-do/restoring-family-links/index.jsp

• “Restoring Family Links,” Movement website. Available at: http://familylinks.
icrc.org/en/Pages/home.aspx

How Does Law Protect in War?

• Document No. 34, ICRC, Tracing Service

226 CHAPTER 6

amount of discretion, but does not amount to a general derogatory clause in
favour of security considerations.796

4. Special protection for specific categories of person
Apart from the fundamental guarantees owed to every human being in
the power of a belligerent party, IHL affords special protection to various
categories of person who, owing to their sex, age, profession or status, are
particularly exposed to certain risks.

(a) Women
In time of war, women are often left to take care of children and other
dependents on their own and under extremely difficult circumstances. In
addition, they are particularly exposed to the risk of sexual violence and
abuse by weapon-bearers or organized criminal groups. IHL therefore
emphasizes that women must be “especially protected against any attack
on their honour, in particular against rape, enforced prostitution, or any
form of indecent assault.”797 Moreover, the cases of pregnant women and
mothers having dependent infants who are arrested, detained or interned
for reasons related to the armed conflict must be reviewed with the utmost
priority.798 To the maximum extent feasible, the death penalty should not be
pronounced, and may in any case not be carried out, on such women.799 800

796 See also J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note
386), p. 207.

797 GC IV, Art. 27(2); AP I, Art. 76(1); CIHL, Rules 93 and 134.
798 AP I, Art. 76(2).
799 AP I, Art. 76(3).
800 All ICRC documents available at: www.icrc.org

To go further (Women) 800

• Sexual Violence in Armed Conflicts: An Invisible Tragedy, film, ICRC, March
2014. Available at: http://www.youtube.com/watch?v=M0ER1uTt7VE

• Democratic Republic of the Congo: Rape Remains Rape, No Matter Who
Did It, film, ICRC, October 2014. Available at: http://www.youtube.com/
watch?v=OIeLyA8-cGQ

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 8: The protection of civilians,
pp. 213–217.

• Helen Durham and Tracey Gurd, Listening to the Silences: Women and War,
Martinus Nijhoff, Leiden/Boston, 2005, 276 pp.

• “Sexual Violence in armed conflict,” IRRC, Vol. 96 No. 894, Summer 2014.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 227

(b) Children

Duty to provide protection and care
Children are probably the most vulnerable group in any population affected
by armed conflict. Orphaned or otherwise left to their own resources, they
often have no choice but to seek safety, food and shelter with organized armed
groups or criminal gangs, where they become victims of forced recruitment,
slavery and sexual violence. Therefore, belli gerent parties must also ensure
that children under the age of 15 are not left to their own resources,801 and
that all children under 12 are equipped with identity discs or similar means
of identification.802 In particular, the parties to a conflict must provide chil-
dren with the care and assistance they require, facilitate their education and
religious practice,803 and protect them against any form of indecent assault.804

Recruitment
Children who are recruited into armed forces or armed groups are par-
ticularly exposed to violence and other dangers of war. As combatants
or as civilians directly participating in hostilities, they may even become
legitimate military targets themselves. Belligerent parties must therefore
take all feasible measures to prevent children under the age of 15 from directly
participating in hostilities and, in particular, may not recruit them into their
armed forces.805 While recruiting among people who are 15 or older but have

801 GC IV, Art. 24(1); CIHL, Rule 135.
802 GC IV, Art. 24(3).
803 GC IV, Art. 24(1); AP I, Art. 77(1); CIHL, Rules 104 and 135.
804 AP I, Art. 77(1); CIHL, Rule 93.
805 AP I, Art. 77(2); CIHL, Rules 136 and 137.

• “Women,” IRRC, Vol. 92, No. 877, March 2010.

• Charlotte Lindsey, “Women and war: An overview,” IRRC, No. 839, September
2000, pp. 561–580.

• ICRC Advisory Services, Prevention and Criminal Repression of Rape and
other Forms of Sexual Violence during Armed Conflicts, Legal factsheet,
ICRC, March 2015. Available at: https://www.icrc.org/en/download/file/4865/
prevention-criminal-repression-rape-sexual-violence-armed-conflicts-icrc-eng.pdf

• “Women,” webpage, ICRC. Available at:
https://www.icrc.org/en/war-and-law/protected-persons/women

• “Sexual violence in armed conflicts: Questions and answers,” ICRC, August
2016. Available at: https://www.icrc.org/en/document/sexual-violence-armed-
conflict-questions-and-answers

228 CHAPTER 6

not yet reached the age of 18, the parties to a conflict must endeavour to
give priority to those who are oldest.806 While the 1989 Convention on the
Rights of the Child initially adopted the same obligations,807 its Optional
Protocol of May 2000 lifted the age limit for compulsory recruitment to
18 years, called on States to raise the minimum age for voluntary recruit-
ment above 15 years and provided that non-State armed groups should
not under any circumstances recruit or use in hostilities children under 18
years of age.808 If children fall into the power of an adverse party after having
directly participated in hostilities, they continue to benefit from the special
protection accorded to children, whether or not they are prisoners of war.809

Evacuation
Belligerent parties should facilitate the accommodation of unaccompa-
nied children under the age of 15 in a neutral country for the duration of a
conflict.810 However, they may not evacuate children who are not their own
nationals to a foreign country, except on a temporary basis where required for
the health, medical treatment or safety of the children. In occupied territory,
such evacuation must be consistent with Article 49 of the Fourth Geneva

806 AP I, Art. 77(2).
807 Convention on the Rights of the Child, 20 November 1989, Art. 38(3).
808 Optional Protocol to the Convention on the Rights of the Child on the involvement of

children in armed conflict, 25 May 2000, Arts 2–4.
809 AP I, Art. 77(3).
810 GC IV, Art. 24(1) and (2).

Ganta, Liberia, on the border with Guinea, 2003. Female members of government armed
forces/militias on guard duty.

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CIVILIANS IN ENEMY-CONTROLLED TERRITORY 229

Convention. Any such evacuation must be conducted with the consent of
the parents or guardian or other responsible person, unless such responsible
persons cannot be found, and in any case under the supervision of the Pro-
tecting Power and with the agreement of the evacuating State, the receiving
State and the child’s State of nationality.811 To facilitate the return of evacu-
ated children to their families, the authorities concerned must provide the
ICRC’s Central Tracing Agency with relevant information for each child.812

813

811 AP I, Art. 78(1).
812 For a complete list of the information to be recorded, see AP I, Art. 78(3).
813 All ICRC documents available at: www.icrc.org

To go further (Children)813

• Democratic Republic of the Congo: Children of Conflict Return Home,
film, ICRC, 2013. Available at:

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 8: The Protection of Civilians,
pp. 217–220.

• Daniel Helle, “Optional Protocol on the involvement of children in armed
conflict to the Convention on the Rights of the Child,” IRRC, Vol. 82, No. 839,
September 2000.

• ICRC, Children Associated with Armed Forces or Armed Groups, ICRC, Geneva,
September 2013, 14 pp.

• “Children,” webpage, ICRC. Available at:
https://www.icrc.org/en/war-and-law/protected-persons/children

How Does Law Protect in War?

• Case No. 237, ICC, The Prosecutor v. Thomas Lubanga Dyilo

• Case No. 276, Sierra Leone, Special Court Ruling on the Recruitment of Children

230 CHAPTER 6

(c) Journalists and war correspondents
Journalists working in areas of armed conflict are inevitably exposed to
the incidental dangers of warfare. The greatest risk they incur because of
their specific role is that of being detained for alleged espionage, or of being
deliberately attacked by forces, groups or individuals opposed to inde-
pendent media reports from the area in question. In recent years, demands
have been made for journalists reporting from conflict zones to be given
a separate status or protective emblem in order to enhance their protec-
tion during armed conflict. In reality, however, journalists face dangers
in conflict areas, not for want of legal protection, but because of a lack of
respect for the protection already afforded to them under IHL. Additional
Protocol  I expressly affirms that “ journalists engaged in dangerous pro-
fessional missions in areas of armed conflict” qualify as civilians under
IHL,814 and requires that they be protected as such, provided they do not
“take action adversely affecting their status as civilians.”815 The only action
for which civilians can be deprived of protection against direct attacks is
direct participation in hostilities.816 If journalists are formally accredited
to the armed forces, whether as “war correspondents” or, less technically,
as “embedded journalists,” they remain civilians, but are entitled to pris-
oner-of-war status upon capture.817 IHL does not provide journalists with
a right of access to conflict-affected areas or persons but, in principle,
grants them the same rights and subjects them to the same restrictions
as ordinary civilians. It is thus entirely up to belligerent parties to decide
whether they want to grant journalists privileges or, within the bounds of
IHL, whether they want to impose more severe restrictions on them than
are applied to the general civilian population. Additional Protocol I never-
theless recommends that the State of nationality or residence, or that State
in which the media organization employing them has its headquarters,
issue identity cards to journalists on dangerous professional missions.818
Given that journalists are simply civilians, such cards do not confer any
particular status, rights or privileges under IHL but, in practice, may help
to protect journalists from wrongful accusations of espionage or other
hostile activities.

814 AP I, Art. 79(1).
815 AP I, Art. 79(2); CIHL, Rule 34.
816 CIHL, Rule 34. See also Chapter 3.I.4.
817 GC III, Art. 4(A)(4).
818 AP I, Art. 79(3). Annex II to AP I provides a model identity card for that purpose.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 231

(d) Refugees, the stateless and the internally displaced
Refugees819 and stateless persons820 caught up in an armed conflict may find
themselves in a very difficult situation. They are not nationals of the territorial
State, nor can they rely on the protection of their State of origin or State of last
residence. It is therefore important not to exclude them from the protection of
IHL, or otherwise place them at a disadvantage, based on formalistic criteria of
nationality that do not correspond to the reality of their situation.

Thus, the Fourth Geneva Convention provides that belligerent parties shall not
consider persons as enemy nationals merely because they are nationals de jure of
an opposing party to a conflict when, as refugees fleeing persecution, they cannot
de facto rely on the protection of their State of nationality.821 Additional Protocol I
provides that persons who, before the beginning of hostilities, were recognized
as stateless or refugees under international law, or under the national law of the
State of refuge or residence, must be treated as protected persons within the
meaning of the Fourth Geneva Convention in all circumstances and without

819 According to Article 1(A)(2) of the 1951 Convention relating to the Status of Refugees, the
term refugee describes “any person who (…) owing to a well-founded fear of being perse-
cuted for reasons of race, religion, nationality, membership of a particular social group,
or political opinion, is outside the country of his nationality, and is unable to or, owing to
such fear, is unwilling to avail himself of the protection of that country…”

820 According to Article 1 of the 1954 Convention relating to the Status of Stateless Persons,
“the term ‘stateless person’ means a person who is not considered as a national by any
State under the operation of its law.”

821 GC IV, Art. 44.

Syrian refugees at the assembly point in Bustana, Syrian Arab Republic, before crossing into
Jordan and the refugee camp at Ruwaished, 2013.

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232 CHAPTER 6

any adverse distinction.822 Most notably, should such persons fall into the power
of an adverse party to the conflict, they may not be denied the protection of the
Fourth Geneva Convention even if they are nationals of the detaining power.823

Internally displaced persons are “persons or groups of persons who have been
forced or obliged to flee or to leave their homes or places of habitual residence,
in particular as a result of or in order to avoid the effects of armed conflict,
situations of generalized violence, violations of human rights or natural or
human-made disasters, and who have not crossed an inter nationally recog-
nized State border.”824 Although internal displacement is a major cause of
humanitarian crisis in many armed conflicts, treaty IHL does not specifically
address the issue, but simply affords displaced persons the same general pro-
tection as the civilian population. Furthermore, as long as they remain within
the territory of their State of origin, displaced persons cannot benefit from
refugee status and the attached rights under the 1951 Convention relating to
the Status of Refugees. In order to address this gap in the law, the UN Human
Rights Commission adopted a soft-law instrument, the Guiding Principles on
Internal Displacement, in 1998. These principles provide non-binding guid-
ance to States and other authorities or organizations confronted with internal

822 AP I, Art. 73.
823 See also GC IV, Art. 70(2), on the protection of refugees in occupied territory who are the

occupying power’s own nationals.
824 United Nations Guiding Principles on Internal Displacement, document E/CN.4/

1998/53/Add.2, 1998 (Deng Principles), Art. 2.

Ouham region, Bossonga, Central African Republic, 2013. A group of displaced persons fleeing
violence reach the outskirts of the town, where they will seek refuge at the Catholic mission.

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CIVILIANS IN ENEMY-CONTROLLED TERRITORY 233

displacement. They also identify rights and guarantees aiming to protect
persons from forced displacement, and to protect and assist them both during
such displacement and during their return or resettlement and reintegra-
tion.825 It was only in 2009, with the adoption of the African Union Conven-
tion for the Protection and Assistance of Internally Displaced Persons in
Africa (the Kampala Convention), that legal protection of intern ally displaced
persons was regulated in a specific international treaty.826 827

II. ENEMY NATIONALS IN THE TERRITORY
OF A BELLIGERENT PARTY

1. Protected persons as “enemy nationals”
At the outbreak of war, nationals of one belligerent party who are resident
or otherwise present within the territory of an opposing party may find
themselves in a very difficult situation. They may have left their country of
origin decades earlier to build a new life in another country and, because
of the war, may suddenly be considered “enemy nationals” by their country

825 Ibid., Arts 1 and 3.
826 The African Union Convention for the Protection and Assistance of Internally Displaced

Persons in Africa (Kampala Convention) was adopted on 23 October 2009 and entered
into force on 6 December 2012; as of June 2016, it had been signed by 40 and ratified by
25 Member States of the African Union.

827 All ICRC documents available at: www.icrc.org

To go further (Journalists, the displaced and refugees)827

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 8: The protection of civilians,
pp. 220, 226–230 and 237.

• “Migration and displacement,” IRRC, Vol. 99, No. 904, 2018.

• “Refugees and Displaced Persons,” webpage, ICRC. Available at: https://www.
icrc.org/en/war-and-law/protected-persons/refugees-displaced-persons

How Does Law Protect in War?

• Case No. 37, Protection of Journalists

• Case No. 196, Sri Lanka, Conflict in the Vanni

• Case No. 228, Case Study, Armed Conflicts in the Great Lakes Region (1994–2005)

• Case No. 274, Case Study, Armed Conflicts in Sierra Leone, Liberia and
Guinea (1980–2005)

234 CHAPTER 6

of residence. One well-known example of this is the approximately 30,000
Japanese nationals in the United States who were collectively interned for the
duration of World War II, along with around 80,000 US citizens of Japanese
descent. In order to avoid the severe humanitarian impact of such general-
ized security measures, the Fourth Geneva Convention establishes a regime
of protection for persons present in the territory of a belligerent party who
are of enemy nationality, or whose State of origin does not maintain normal
diplomatic relations with the territorial State.

2. Right to leave and transfers to another country

Right to leave
The most important right granted to protected persons is the right to leave
the territory of a belligerent party, whether immediately, when conflict
breaks out, or later, while it is being fought. The territorial State may refuse a
protected person’s departure if that would be contrary to its “national inter-
ests,”828 a criterion that seems to be broader than consider ations of “State
security.” In fact, based on the argument of national interest, the territo-
rial State could legitimately refuse or restrict the repatriation, for example,
of male enemy nationals of fighting age, of scientists or other experts who
could make an effective contribution to the enemy’s war effort, or arguably
even of persons whose continued presence is needed by the territorial State
for economic reasons.829 Nevertheless, in view of the potential humanitarian
consequences of the excessive use of restrictive measures, belligerent parties
should use their right to refuse the departure of protected persons with
utmost restraint. In any case, the applications of such persons to leave must
be decided as rapidly as possible and in accordance with regularly estab-
lished procedures, which must include the right to appeal an initial refusal
or reconsideration by an appropriate court or administrative board.830 Per-
mitted departures must be carried out in satisfactory conditions in terms of
safety, hygiene, sanitation and food, and those who are granted permission
to leave must be able to take with them the funds needed for their journey
and “a reasonable amount of their effects and articles of personal use.”831
While this would seem to allow protected persons to take with them as much
of their property as they can personally carry, the national control measures
usually enacted at the outset of a conflict are likely to prohibit the export of
larger amounts of capital or movable property.832

828 GC IV, Art. 35(1).
829 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 236.
830 GC IV, Art. 35(1).
831 GC IV, Arts 35(1) and 36(1).
832 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 236.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 235

Transfers to another country
In principle, a belligerent party may law fully transfer protected persons
present within its territory to that of another State party to the Fourth Geneva
Convention and willing and able to provide them with the protection they are
entitled to under IHL. In line with the customary principle of non-refoule-
ment, however, protected persons may in no circumstances be transferred to
a country where they may have reason to fear persecution for their political
opinions or religious beliefs.833 This prohibition constitutes no obstacle to the
repatriation or return of protected persons after the cessation of hostilities,834
or to their extradition in relation to offences against ordinary criminal law and
based on extradition treaties pre-dating the conflict.835 Just as is the case for
persons deprived of their liberty, responsibility for the protection of persons
lawfully transferred to another State passes to the receiving State for such time
as they remain in its custody. Here, too, if the receiving State fails to fulfil its
obligations under IHL in any important respect, the transferring State must
take effective measures to correct the situation or ensure that the protected
persons in question are returned to its jurisdiction.836

3. Non-repatriated persons

Treatment
Non-repatriated persons who remain within the territory of an adverse party
to a conflict are protected persons under the Fourth Geneva Convention and
benefit from the full protection of IHL. In principle, with a few exceptions,
their situation should continue to be regulated by the law applicable to foreign
nationals in time of peace. In any case, the territorial State must ensure that
protected persons are authorized to move from areas particularly exposed to
the dangers of war to the same extent as the local population, and that they
are given the same treatment in terms of health care, social assistance and the
opportunity to find paid employment so as to be able to support themselves.
Protected persons must also be allowed to practise their religion, to benefit
from spiritual assistance and to receive individual or collective relief or allow-
ances sent to them by their next of kin, their country of origin, the Protecting
Power, or relief societies.837 Where measures of security and control imposed
by the territorial State prevent protected persons from finding paid employ-
ment or from otherwise supporting themselves, that State must provide
such protected persons and their dependents with the necessary support.838

833 GC IV, Art. 45(3).
834 GC IV, Art. 45(2).
835 GC IV, Art. 45(5).
836 GC IV, Art. 45(3).
837 GC IV, Arts 38 and 39(3).
838 GC IV, Art. 39(2).

236 CHAPTER 6

Protected persons may be compelled to work only to the same extent as nation-
als of the territorial State, and must benefit from the same working conditions
and safeguards concerning pay, working hours, clothing and equipment,
training and compensation for accidents and illness.839 However, protected
persons of enemy nationality may not be compelled to do work directly related
to the conduct of military operations.840

Security measures
Within the limits set by IHL, the territorial State may subject protected persons
to any measures of control and security it may deem necessary “as a result of
the war.”841 The general principles governing security measures with regard to
persons protected by the Fourth Geneva Convention apply here as well. This
means that the territorial State enjoys a great deal of latitude in determin-
ing the kind, severity and duration of the security measures to be imposed,
provided that the fundamental guarantees afforded by IHL are upheld at all
times and provided also that no security measure is more severe than assigned
residence or internment.842 Restrictive measures taken regarding protected
persons and their property must be cancelled as soon as possible after the end
of hostilities.843 844

839 GC IV, Art. 40(1) and (3).
840 GC IV, Art. 40(2).
841 GC IV, Art. 27(4).
842 GC IV, Art. 41(1).
843 GC IV, Art. 46.
844 All ICRC documents available at: www.icrc.org

To go further (Enemy nationals in the territory of a belligerent party)844

• Marco Sassòli, “The concept of security in international law relating to armed
conflicts,” in Cecilia M. Bailliet (ed.), Security: A Multidisciplinary Normative
Approach, Martinus Nijhoff, Leiden/Boston, 2009, pp. 7–23.

How Does Law Protect in War?

• Case No. 162, Eritrea/Ethiopia, Award on Civilian Internees and Civilian Property

• Case No. 175, UN, Detention of Foreigners

• Case No. 216, ICTY, The Prosecutor v. Blaskić

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 237

III. INHABITANTS OF OCCUPIED TERRITORIES

In situations of belligerent occupation, a belligerent State exercises military
authority over all or part of the territory of an opposing party to the conflict.845
This position of almost absolute power over the territory, infrastructure and
population of an enemy State has in the past led to the most shocking abuse.
It is sufficient to remember the policies of deportation, enslavement and
extermination, and the looting, rape and abuse committed by occupying
powers in the context of World War II, to understand the desperate need
for protection of the populations concerned. Apart from exposing the
population to direct abuse by a hostile power, belligerent occupation can
also have complex legal and political implications beyond the realm of
IHL. In particular, contexts of long-term occupation without any realistic
prospect of political resolution, or contexts of “transformative” occupation
intended to change the local political system, can profoundly destabilize
entire societies and result in widespread and persistent human suffering.
The modern law of occupation, as reflected in the Hague Regulations, the
Fourth Geneva Convention and Additional Protocol I, does not question the
lawfulness of belligerent occupation, but recognizes the de facto authority of
the occupying power and takes its legitimate security interests into account.
At the same time, it aims to prevent the introduction of unwarranted
changes to the intrinsic characteristics of the occupied territory, to protect

845 See Chapter 2.IV.

Kuneitra checkpoint, Israeli-occupied Golan, 2013. Families bid a tearful farewell to students
returning to their studies at Damascus University.

G
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238 CHAPTER 6

the inhabitants from arbitrary decisions and abuse, and to allow them to
lead as normal a life as possible.

1. The occupying power as a temporary de facto authority

(a) Responsibility for public order and safety
The Hague Regulations describe the basic role and responsibilities of an
occupying power as follows: “The authority of the legitimate power having
in fact passed into the hands of the occupant, the latter shall take all the
measures in his power to restore, and ensure, as far as possible, public order
and safety, while respecting, unless absolutely prevented, the laws in force
in the country.”846 Thus, for the duration of the occupation, the occupying
power de facto replaces the legitimate government (but without devolution
of sovereignty) and has a legal right and duty to ensure public order and
safety in accordance with the laws already in force in the territory. Signifi-
cant restrictions to the occupying power’s authority, compared to that of
the legitimate sovereign, prohibit the introduction of permanent changes to
the social, demographic, geographical, political and economic structure of
the occupied territory, the exploitation for profit of its natural, cultural and
economic resources, and any other exercise of its authority that is in con-
tradiction with its duties towards the occupied territory and its inhabitants.
In particular, as has been pointed out, the occupying power may not impose
any security measures more severe than assigned residence or internment
on protected persons under its control.847 In sum, the law of occupation
could be described as a legal regime tailor-made for the temporary admin-
istration of territories belonging to a hostile State. Any permanent changes
introduced into the legal and political order of an occupied territory must
be based on a valid peace treaty or, exceptionally, on a resolution adopted by
the UN Security Council in line with its responsibility for maintaining or
restoring international peace and security.

(b) Responsibility for public administration and services
Apart from ensuring public order and safety, the occupying power also bears
ultimate responsibility for the continued functioning of public institutions
and services for the benefit of the population under occupation. The occu-
pying power must, to the fullest extent of the means available to it, ensure
that the civilian population has the basic items needed for its survival, such

846 Hague Regulations, Art. 43. Experts generally agree that this provision, as reflected in
the French text, imposes on the occupying power an obligation to restore “public order
and civil life,” the meaning of which is much broader than the term “public safety” used
in the English version. See ICRC, Occupation and Other Forms of Administration, op. cit.
(note 79), pp. 56–57.

847 See Chapter 5.III.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 239

as food, medical supplies, clothing and shelter.848 Likewise, with the co –
operation of the national and local authorities, it must ensure and maintain
medical services, public health and hygiene,849 facilitate adequate education
and care for children,850 and permit the provision of spiritual assistance851
and humanitarian relief 852 within the occupied territory. The occupying
power can also collect the taxes, dues and tolls imposed by local legislation
on behalf of the occupied State, but must use such revenue for the adminis-
tration and benefit of the occupied territory.853

(c) Respect for public officials and judges
In principle, public officials and judges in the occupied territory must be
allowed to retain their status and to continue to carry out their duties in the
service of the inhabitants without unwarranted interference or intimida-
tion.854 For example, the Fourth Geneva Convention provides that, as long
as they pose no obstacle to the effective administration of justice or to the
occupying power’s full compliance with IHL, the criminal tribunals of the
occupied territory should continue to adjudicate all offences by protected
persons under local legislation.855 Should public officials and judges abstain
from fulfilling their functions for reasons of conscience, however, they may
not be exposed to sanctions or to measures of coercion or discrimination.856
This principle is subject to two exceptions. First, the occupying power retains
its right to requisition compulsory labour from public officials and judges
whose work is “necessary either for the needs of the army of occupation, or
for the public utility services, or for the feeding, sheltering, clothing, trans-
portation or health of the population of the occupied country.”857 Second, the
occupying power may come to the conclusion that the effective implemen-
tation of its duties under IHL requires the removal of public officials from
their posts and the establishment of its own administration and courts.858
In reality, however, occupying authorities tend to remove only government
officials and other political agents, and to continue to rely on local officials for
the non-political administration of the occupied territory.859

848 GC IV, Art. 55; AP I, Art. 69(1).
849 GC IV, Art. 56(1); AP I, Art. 14(1).
850 GC IV, Art. 50.
851 GC IV, Art. 58.
852 GC IV, Arts 59–63; CIHL, Rule 55.
853 Hague Regulations, Art. 48.
854 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 304.
855 GC IV, Art. 64(1).
856 GC IV, Art. 54(1).
857 GC IV, Arts 51(2) and 54(2).
858 GC IV, Art. 54(2).
859 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 308.

240 CHAPTER 6

2. Protection of the inhabitants
The provisions of IHL specifically designed to govern situations of belliger-
ent occupation can be found primarily in the Hague Regulations860 and the
Fourth Geneva Convention,861 supplemented by individual provisions from
Additional Protocol I.862 While the Hague Regulations protect the population
of the occupied territory as a whole,863 the Fourth Geneva Convention is based
on the concept of “protected person,” which includes all persons present in
occupied territories except: (a) the nationals of the occupying power and its
co-belligerents, and (b) those entitled to prisoner-of-war status.864 Also pro-
tected are persons formally recognized as refugees, regardless of their nation-
ality.865 While the respective scopes of protection are not identical for those
different categories of person, developments in customary IHL and human
rights law since World War II have rendered the differences largely irrelevant
in practice.

(a) Humane treatment
More than a hundred years ago, the Hague Regulations were already
requiring that, in occupied territory, the lives and property of the inhabitants,
their family honour and rights, and their religious convictions and practice
be respected,866 and prohibited the infliction of collective punishment “upon
the population on account of the acts of individuals for which they cannot
be regarded as jointly and severally responsible.”867 Today, the general
obligation of humane treatment and non-discrimination expressed in the
Fourth Geneva Convention and Additional Protocol  I also applies to the
population of occupied territories,868 as do the specific duties, prohibitions
and guarantees derived from that obligation.869 Therefore, modern IHL
governing belligerent occupation does not contain a separate reaffirmation
of these fundamental guarantees but focuses on additional topics relevant to
the specific circumstances of occupied territories, such as the inviolability of
the rights and allegiance of the inhabitants, the prohibition of demographic
changes, and the protection of private and public property and of the legal
order in territories subject to belligerent occupation.

860 Hague Regulations, Arts 42–56.
861 GC IV, Arts 47–78.
862 AP I, Arts 44(3), 63, 69, 73 and 85(4)(a).
863 The relevant provisions of the Hague Regulations refer to “inhabitants” (Arts 44, 45 and 52),

the “population” (Art. 50) and “persons” (Art. 46).
864 GC IV, Art. 4.
865 AP I, Art. 73.
866 Hague Regulations, Art. 46(1).
867 Hague Regulations, Art. 50.
868 GC IV, Art. 27(1) and (3); AP I, Art. 75(1); CIHL, Rules 87 and 88.
869 GC IV, Arts 27–34; AP I, Arts 72–79.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 241

(b) Rights, duties and allegiance of the population

Inviolability and non-renunciation of rights
In situations of occupation, particular importance is given to protecting the
population from attempts by the occupying power to abuse its position of
strength and introduce changes to the political status, structure and insti-
tutions of the occupied territory, whether through unilateral acts or on the
basis of forced bilateral agreements with the occupied State. The Fourth
Geneva Convention therefore emphasizes that no agreement concluded
between belligerent parties, annexation or other change to the institutions
or government of an occupied territory may deprive the inhabitants of the
benefits of the Convention.870 Nor may protected persons renounce all or
part of the rights afforded to them under the Fourth Geneva Convention or
under any special agreements between the belligerent parties.871

Duty of obedience and respect for allegiance
Also, while the inhabitants of occupied territory have a duty of obedience
towards the de facto authorities of the occupying power, they have no corres-
ponding duty of allegiance. Thus, they cannot be compelled to swear alle-
giance to the occupying power,872 to serve in its armed or auxiliary forces,873
or to furnish information about the armed forces or means of defence of
the occupied State.874 Nor may the occupying power use pressure or propa-
ganda aimed at securing voluntary enlistment in the occupying forces,875 or
deliberately restrict employment opportunities in an occupied territory so
as to induce the inhabitants to work in its service.876 For the same reason,
protected persons may not be compelled to undertake any work that would
oblige them to participate personally in military operations against their
own country or to use force to ensure the security of installations where
compulsory labour is performed, or that would involve them in an organ-
ization of a military or semi-military character.877 More generally, the req-
uisition of services (compulsory work) must be ordered by the commander
of the occupied locality,878 and is permitted only for protected persons
over 18 years of age and only to the extent necessary: (a) for the needs of
the army of occupation, or (b) for the public utility services, or (c) for the

870 GC IV, Art. 47.
871 GC IV, Art. 8
872 Hague Regulations, Art. 45.
873 GC IV, Art. 51(1).
874 Hague Regulations, Art. 44.
875 GC IV, Art. 51(1).
876 GC IV, Art. 52(2).
877 GC IV, Art. 51(2) and (4); Hague Regulations, Art. 52(1).
878 Hague Regulations, Art. 52(2).

242 CHAPTER 6

feeding, sheltering, clothing, transportation or health of the population of
the occupied country.879 In all such cases, requisitioned work must be carried
out within the occupied territory and must correspond to each individual’s
physical and intellectual capacities. Workers must be paid a fair salary and
must benefit from the legislation in force in the occupied country concern-
ing working conditions and, in particular, the safeguards concerning wages,
working hours, equipment, preliminary training and compensation for occu-
pational accidents and diseases.880

(c) Prohibition of transfers, deportation and colonization

Prohibition of transfers and deportations
Another danger in situations of occupation is that the occupying power will
introduce demographic changes in furtherance of its territorial or political
ambitions, most notably through deportations from and population transfers
within occupied territories. In view of the enormous suffering caused by the
deportation of millions of civilians during World War II, the Fourth Geneva
Convention and customary IHL now absolutely prohibit both individual and
mass forcible transfers within occupied territory and deportations of pro-
tected persons (including those deprived of their liberty) from occupied ter-
ritory, regardless of their motive and destination.881

Exception for temporary evacuations
Nevertheless, the Fourth Geneva Convention recognizes that the security
of the population or imperative military considerations may require the
total or partial evacuation of an area and may even render inevitable the
temporary transfer of protected persons outside the occupied territory. In
such exceptional circumstances, the Protecting Power must be informed
as soon as the evacuation or transfer has taken place,882 and all persons
concerned must be returned to their area of departure as soon as hostilities
there have ceased.883 During any such transfer, protected persons must be
treated humanely and provided with the necessary food, water, clothing and
medical care. Moreover, suitable precautions must be taken to ensure their
safety and to prevent their separation from relatives.884

879 GC IV, Art. 51(2).
880 GC IV, Art. 51(3); CIHL, Rule 95.
881 GC IV, Art. 49(1); CIHL, Rules 129 and 130.
882 GC IV, Art. 49(4).
883 GC IV, Art. 49(2); CIHL, Rule 132.
884 GC IV, Art. 49(3); CIHL, Rules 105 and 131.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 243

Exception for voluntary displacement and departures
The aim of this prohibition is not, however, to prevent protected persons from
voluntarily moving within occupied territory or from leaving it altogether.
This is important because protected persons may of their own accord want
to seek refuge from the dangers of military operations in other areas within
the occupied territory. Also, foreign nationals may wish to be repatriated,
and nationals of the occupied country may have been exposed to ethnic or
political discrimination or persecution prior to the occupation or may have
other legitimate reasons for leaving the territory.885 The Fourth Geneva Con-
vention therefore does not prohibit voluntary departures from occupied ter-
ritory by protected persons of any nationality; it even provides those who are
not nationals of the occupied State with an express right to leave comparable
to protected persons in a belligerent party’s own territory.886 The Convention
also provides that, unless required for the security of the population or for
imperative military reasons, the occupying power may not retain protected
persons in areas of the occupied territory that are particularly exposed to the
dangers of war.887 In fact, the belligerent parties must endeavour to evacuate
besieged and encircled areas888 and to shelter parts of the population in safety
zones889 or neutralized zones890 away from their usual place of residence.

Prohibition of colonization
IHL also absolutely prohibits the deportation or transfer of parts of the occu-
pying power’s own civilian population into the occupied territory.891 This
prohibition is intended to prevent the colonization of occupied territories by
nationals of the occupying power, and the gradual establishment of “facts
on the ground” that may eventually result in a de facto annexation of the
territory in question. A well-known case in point is the longstanding Israeli
policy of establishing settlements for parts of its own population inside the
occupied Palestinian territory. The ICRC has consistently taken the position
that this policy is in clear violation of IHL and has had grave humanitarian
consequences for decades.892

885 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 279.
886 GC IV, Art. 48.
887 GC IV, Art. 49(5).
888 GC IV, Art. 17.
889 GC IV, Art. 14.
890 GC IV, Art. 15.
891 GC IV, Art. 49(6); CIHL, Rule 130.
892 Peter Maurer, “Challenges to international humanitarian law: Israel’s occupation policy,”

IRRC, Vol. 94, No. 888, Winter 2012, pp. 1503–1510.

244 CHAPTER 6

3. Protection of property

(a) General prohibition of pillage and destruction of property
As a general rule, when a territory is occupied, its entire infrastructure, its
population, and the private property of its inhabitants fall into the hands of
a hostile army. Throughout the history of warfare, arbitrary acts of revenge,
pillage and destruction by marauding armies have caused enormous suffer-
ing among the civilian population, needlessly aggravated the damage caused
by the war and placed obstacles in the way of recovery, reconstruction and
eventual reconciliation. IHL therefore unequivocally prohibits the pillage of
any type of property, whether it belongs to private persons, to communities
or to the State.893 It also prohibits the destruction by the occupying power
of any movable or immovable property, whether private or public, “except
where such destruction is rendered absolutely necessary by military oper-
ations.”894 According to the ICRC, the expression “‘military operations” in
this provision refers to “the movements, manoeuvres and other action taken by
the armed forces with a view to fighting.”895 As a consequence, the destruction
of property is permissible only to the extent absolutely required for the conduct
of hostilities, and cannot be ordered on merely punitive, deterrent or adminis-
trative grounds. In any case, neither prohibition affects the occupying power’s
right to requisition or seize public and, in exceptional cases, private property.

(b) Protection of public property
In line with its role as a temporary de facto authority, the occupying power
is regarded as simply the administrator and usufructuary of the immovable
property belonging to the occupied State, including public buildings, real
estate, forests and agricultural estates situated in the occupied territory.
This means that the occupying power must safeguard the capital of these
properties and administer them in accordance with the rules of usufruct.896
Civilian hospitals may be requisitioned only temporarily and only in cases of
urgent necessity for the care of wounded and sick military personnel. In each
such case, suitable arrangements must first be made for the accommodation
and care of the hospital’s civilian patients and for meeting needs in the
civilian population for hospital accommodation.897 The material and stores
of civilian hospitals, however, cannot be requisitioned as long as they are

893 Hague Regulations, Arts 28 and 47; GC IV, Art. 33(2); CIHL, Rule 52. See also J.S. Pictet
(ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), pp. 226–227.

894 Hague Regulations, Art. 23(g); GC IV, Art. 53. See also Hague Regulations, Art. 54, with
regard to submarine cables.

895 ICRC, “Interpretation by the ICRC of Article 53 of the Fourth Geneva Convention of
12 August 1949, with particular reference to the expression ‘military operations’,” official
statement, 25 November 1981.

896 Hague Regulations, Art. 55; CIHL, Rule 51(a) and (b).
897 GC IV, Art. 57(1).

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 245

needed by the civilian population.898 With regard to movable property of
the occupied State, the occupying power’s right to confiscate is limited to
cash, equivalent funds and realizable securities, and to movable property
that can be used for military operations, such as arms depots, means of
transportation, stores and supplies.899 The property of municipalities and
of institutions dedicated to religion, charity and education, the arts and
sciences, even when State property, must be treated as private property. All
seizure or destruction of, or wilful damage done to such institutions, to
historic monuments, or to works of art and science, is prohibited.900

(c) Protection of private property
In principle, the confiscation of private property by the occupying power is
prohibited.901 However, this prohibition is subject to two important excep-
tions that significantly restrict the protection of private property. First, private
property that may be used for military operations (such as communication
devices, means of transportation and weaponry) may be seized, but must be
restored or its owner compensated at the end of the conflict.902 Second, the
occupying power may lawfully requisition other goods or money from the
inhabitants.903 Both types of requisition involve the unilateral expropriation
of the inhabitants and must be carried out in accordance with certain rules.
First, requisitions may not be carried out for purposes other than covering
the needs of the occupation army (including those related to its security) or
of the administration of the occupied territory and must always be in pro-
portion to the resources of the occupied country.904 In no case may money,
goods or services be requisitioned for the needs or benefit of the occupy-
ing power’s domestic government, administration or population. To avoid
abuse, goods may be requisitioned and money collected only after an express
order from the commander-in-chief in the occupied territory;905 and only
against delivery of a formal receipt for all funds and goods received.906 The
collection of money should be carried out in accordance with the rules of
assessment and incidence of the taxes collected on behalf of the occupied
State.907 When the occupying power requisitions goods, such as foodstuffs

898 GC IV, Art. 57(2).
899 Hague Regulations, Art. 53(1).
900 Hague Regulations, Art. 56; CIHL, Rule 40 A.
901 Hague Regulations, Art. 46(2); CIHL, Rule 51(c).
902 Hague Regulations, Art. 53(2); CIHL, Rule 49.
903 Hague Regulations, Art. 52(1).
904 Hague Regulations, Art. 49; GC IV, Art. 55(2).
905 Hague Regulations, Arts 51(1) and 52(2).
906 Hague Regulations, Arts 51(3) and 52(3).
907 Hague Regulations, Art. 51(2).

246 CHAPTER 6

or medical supplies, the needs of the civilian population must be taken into
account, and fair value must be paid for any goods received.908

(d) Protection of cultural property
The general duty of belligerent parties to safeguard and respect cultural prop-
erty also applies in occupied territory.909 Thus, besides the duties of both the
occupying and the occupied State with regard to the protection of cultural
property during the conduct of hostilities,910 the occupying power may not
requisition cultural property situated in the occupied territory and must
protect it from any form of vandalism, theft, pillage or misappropriation.911
In particular, the occupying power must prohibit and prevent: (a) any illicit
export, other removal or transfer of ownership of cultural property; (b) any
archaeological excavation not strictly required to safeguard, record or pre-
serve cultural property; and (c) any alteration to, or change of use of, cultural
property intended to conceal or destroy cultural, historical or scientific evi-
dence.912 The occupying authorities must also provide the competent national
authorities of the occupied State with all necessary and feasible support for
safeguarding and preserving its cultural property.913 Wherever possible, per-
missible excavations, alterations, or changes to the use of cultural property in
occupied territory must be carried out in close cooperation with the compe-
tent national authorities of the territory.914

4. Protection of legal order

(a) Duty to respect local legislation “unless absolutely prevented”
The Hague Regulations require that the occupying power, in exercising its
de facto authority, respect the laws in force in the occupied territory “unless
absolutely prevented.”915 The Fourth Geneva Convention contains a number of
provisions on penal legislation that are accepted as authoritatively interpret-
ing this reservation as applying to the legal system of the occupied territory
as a whole, i.e. including not only penal law, but also civil, constitutional and
administrative law.916 Accordingly, the occupying power may repeal or suspend
local laws only in two cases, namely where they constitute a threat to its secu-
rity or an obstacle to the application of IHL. For example, an occupying power

908 GC IV, Art. 55(2).
909 Hague Convention on Cultural Property, Art. 18(2); Second Protocol to the Hague

Convention on Cultural Property, Art. 3(1); CIHL, Rule 38.
910 See Chapter 3.II.2.a.
911 Hague Convention on Cultural Property, Art. 4(3).
912 Second Protocol to the Hague Convention on Cultural Property, Art. 9(1).
913 Hague Convention on Cultural Property, Art. 5(1) and (2).
914 Second Protocol to the Hague Convention on Cultural Property, Art. 9(2).
915 Hague Regulations, Art. 43.
916 J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit. (note 386), p. 335.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 247

could lawfully abrogate a local law obliging the population to engage in armed
resistance, or local legislation imposing a regime of racial discrimination con-
trary to the principles of humane treatment and of non-discrimination.917 It
would not be permissible, however, for the occupying power to facilitate the
recruitment of inhabitants into its armed or auxiliary forces by suspending a
local law prohibiting voluntary military service on behalf of another State. Of
course, the duty to respect and safeguard the pre-existing legal order of the
occupied territory also applies to local authorities whose legislative activities
are effectively controlled by the occupying power and who therefore lack the
independence required to be able to act in the interest of the local population.

(b) General authority to legislate
The occupying power’s duty to respect and apply the local law of the occupied
territory “unless absolutely prevented” also involves a qualified prohibition
against introducing new laws. In interpreting the clause “unless absolutely pre-
vented” as it applies to penal legislation, the Fourth Geneva Convention recog-
nizes that the occupying power may promulgate new penal provisions for three
purposes only: (a) to enable the occupying power to fulfil its obligations under
IHL, (b) to maintain the orderly government of the territory, and (c) to ensure
the security of the personnel, property and communication infrastructure of
the occupying power’s armed forces and administration.918 This list of legit-
imate legislative purposes is exhaustive. It also provides authoritative guidance
for construing the occupying power’s legislative powers in other areas, such
as administrative and procedural law. For example, if necessary, the occupy-
ing power must be allowed to promulgate new legislation aimed at: giving the
delegates of the Protecting Power or the ICRC access to protected persons held
in solitary confinement; introducing a general prohibition forbidding civilians
to carry weapons; or at establishing a system of procedural guarantees for the
periodic review of security measures taken in the occupied territory, such as
assigned residence and internment.

(c) Special rules on penal legislation

Promulgation and application by the occupying power
In principle, in situ ations of belligerent occupation, existing local criminal
tribunals should continue to adjudicate all cases relating to offences against
the penal legislation in force in the occupied territory.919 However, any penal
provisions promulgated by the occupying power in accordance with its
legislative powers must be non-retroactive and can come into force only after
they have been published and brought to the knowledge of the inhabitants

917 Ibid.
918 GC IV, Art. 64(2).
919 GC IV, Art. 64(1).

248 CHAPTER 6

in their own language.920 Offences against penal provisions so promulgated
may be adjudicated by the occupying power’s own military courts, provided
they have been regularly constituted and are non-political. This excludes any
form of special or ad hoc tribunal constituted for political purposes without
sufficient supervision by the regular military justice system. Moreover, first-
instance courts must necessarily, and courts of appeal should preferably, sit
in the occupied territory.921 The military courts of the occupying power may
apply only penal provisions that were applicable at the time of the offence
(nulla poena sine lege) and that are in accordance with other general principles
of law, in particular the principle that any penalty must be proportionate to the
offence.922 Other general principles of law relevant to penal proceedings include
the presumption of innocence (in dubio pro reo) and the prohibition against
trying the same person twice on the same charge, or double jeopardy (non bis
in idem / res judicata).

Permissible penalties
When determining the sentence for any offence against penal provisions
promulgated by the occupying power, the courts must take into consideration
the fact that the accused is not a national of the occupying power and conse-
quently has no duty of allegiance towards it.923 Minor offences solely intended
to harm the occupying power, and that do not involve an attempt to kill or
wound its military or administrative personnel, to seriously damage its prop-
erty or installations, or to cause grave collective danger, may not be punished
more severely than by simple imprisonment or by internment, in either case of
a duration proportionate to the offence. The rationale for using internment as
opposed to simple imprisonment as a sanction for minor offences against the
occupying power is to give relatively harmless offenders motivated by patriot-
ism the benefit of conditions that are more lenient and less stigmatizing than
those afforded petty criminals.924 More serious offences against the penal pro-
visions promulgated by the occupying power may be punished more severely
but always with due respect for the humane treatment requirements of IHL,
most notably the prohibitions against collective punishment and against cruel,
inhuman and degrading punishment. The death penalty may be imposed only
for espionage, serious acts of sabotage and intentional homicide, and only if:
(a) such offences were already punishable by death under the local law prior
to the occupation;925 (b) the accused was at least 18 years of age at the time of

920 GC IV, Art. 65.
921 GC IV, Art. 66.
922 GC IV, Art. 67; CIHL, Rule 101.
923 GC IV, Art. 67.
924 GC IV, Art. 68(1). On punitive internment, see also Chapter 5.III.1.a.
925 GC IV, Art. 68(2).

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 249

the offence;926 and (c) the attention of the court has been particularly called to
the fact that the accused is not bound to the occupying power by any duty of
allegiance, since he is not one of its nationals.927

Offences committed before occupation
The occupying power’s right to exercise criminal jurisdiction in the occu-
pied territory is temporally restricted to the period during which it actu-
ally exercises military control over the territory. The occupying power may
therefore not arrest, prosecute or convict protected persons for acts com-
mitted before the occupation, or during a temporary interruption thereof,
with the exception of breaches of the laws and customs of war, for which
there is universal jurisdiction.928 This jurisdictional limitation even applies
to refugees who are the occupying power’s own nationals, provided that they
sought refuge in the territory of the occupied State before the outbreak of
hostilities and are not accused of offences under common law that would
have justified their extradition under the law of the occupied State applicable
in peacetime.929 930

926 GC IV, Art. 68(4).
927 GC IV, Art. 68(3).
928 GC IV, Art. 70(1).
929 GC IV, Art. 70(2).
930 All ICRC documents available at: www.icrc.org

To go further (Inhabitants of occupied territories)930

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 8: The protection of civilians,
pp. 231–248.

• Peter Maurer, “Challenges to international humanitarian law: Israel’s
occupation policy,” IRRC, Vol. 94, No. 888, 2012, pp. 1503–1510.

• Alan Baker, “International humanitarian law, ICRC and Israel’s status in the
Territories,” IRRC, Vol. 94, No. 888, 2012, pp.1511–1521.

• Tristan Ferraro, “Determining the beginning and end of an occupation under
international humanitarian law,” IRRC, Vol. 94, No. 885, 2012, pp. 133–163.

• “Occupation,” IRRC, Vol. 94, No. 885, Spring 2012.

250 CHAPTER 6

➝ See also the references listed at the end of Chapter 2.

IV. HUMANITARIAN ASSISTANCE

1. Primary responsibility
The provisions of IHL on humanitarian assistance are based on the assump-
tion that each belligerent party has the primary obligation to meet the basic
needs of the population under its control. While this duty is presumed to
be self-evident as it relates to territorial States and their own population, it
is expressly spelled out for contexts of belligerent occupation. The Fourth
Geneva Convention specifically provides that, “[t]o the fullest extent of the
means available to it, the Occupying Power has the duty of ensuring the
food and medical supplies of the population” and, “if the resources of the
occupied territory are inadequate,” must bring in the necessary foodstuffs,
medical stores, clothing, bedding, means of shelter, other supplies essential
to the survival of the civilian population and objects necessary for religious
worship.931 In principle, therefore, humanitarian assistance should be under-
stood as a subsidiary, complementary and temporary means of helping the
belligerent party concerned to fulfil its own obligations towards the popula-
tion under its control.

2. Basic duty to allow and facilitate relief to civilians
IHL prohibits the use of starvation of the civilian population as a method of
warfare,932 and obliges each belligerent party and non-belligerent States to

931 GC IV, Art. 55(1); AP I, Art. 69(1).
932 AP I, Art. 54(1); CIHL, Rule 53. See also Chapter 3.II.2.c.

How Does Law Protect in War?

• Case No. 123, ICJ/Israel, Separation Wall/Security Fence in the Occupied
Palestinian Territory

• Case No. 125, Israel, Applicability of the Fourth Geneva Convention to
Occupied Territories

• Case No. 141, United Kingdom, Position on Applicability of Fourth Convention

• Case No. 161, Eritrea/Ethiopia, Awards on Occupation

• Case No. 236, ICJ, Democratic Republic of the Congo/Uganda, Armed
Activities on the Territory of the Congo

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 251

allow and facilitate impartial humanitarian relief for civilian populations
in need of supplies essential to their survival.933 The treaty provisions regu-
lating such humanitarian assistance can be categorized into three distinct
duties: (a) the general duty of all States and each belligerent party to allow
and facilitate the free passage of relief consignments intended for civilians
in other States; (b) the particular duty of the occupying power to ensure the
provision of essential supplies to the civilian population of the occupied ter-
ritory; and (c) the duty of belligerent parties to allow and facilitate the provi-
sion of humanitarian relief to other territories under their control. IHL also
provides the civilian population and individual civilians with the right to
communicate their needs to the Protecting Power and relief organizations,
and regulates the duties of belligerent parties with regard to humanitarian
personnel participating in such relief operations.

(a) Free passage of relief consignments to civilians in other States
In situations of international armed conflict, the Fourth Geneva
Convention and Additional Protocol I establish that all belligerent parties
and non-belligerent States have a general duty to allow and facilitate the
free passage of relief consignments aimed at providing supplies essential
for the survival of any civilian population outside their territory or
control.934 Humanitarian relief shipments must be protected against the
dangers arising from military operations.935 They must be forwarded as
rapidly as possible and may not be delayed or diverted from their intended
purpose except in cases of urgent necessity in the interest of the civilian
population concerned.936 Each State or belligerent party allowing free
passage may, however, inspect such shipments and require that they be
distributed under the local supervision of the Protecting Power.937 The
free passage of humanitarian assistance to civilians in need may not be
refused on the grounds that the delivery of such goods and services could
be used to support the general war effort or the economy of the enemy.
Such a refusal could be justified only in exceptional circumstances, where
there are serious reasons to believe that the supplies in question may be
diverted for military purposes rather than distributed to the intended
beneficiaries, or where relief shipments would flood a conflict area with
quantities of goods and services clearly exceeding the needs of the civilian

933 CIHL, Rules 55 and 56.
934 GC IV, Arts 23(1), 59(3) and 61(3); AP I, Art. 70(2); CIHL, Rule 55.
935 GC IV, Art. 59(3); AP I, Art. 70(4).
936 GC IV, Art. 23(4); AP I, Art. 70(3) and (4).
937 GC IV, Arts 23(3) and (4), and 59(4); AP I, Art. 70(3).

252 CHAPTER 6

population, thus depriving such action of its humanitarian necessity and
justification.938

(b) Relief consignments for civilians in occupied territory
The occupying power has a legal duty to ensure, to the fullest extent of the
means available to it, the provision of food, medical supplies, clothing,
bedding, shelter, and other supplies essential to the survival of the civilian
population.939 Accordingly, if all or part of the occupied territory is inade-
quately supplied, the occupying power must either bring in the necessary
goods or allow relief operations in behalf of the civilian population by other
States or by impartial humanitarian organizations such as the ICRC.940 In
principle, protected persons in occupied territories must also be permitted to
receive individual relief consignments sent to them.941 The delivery of human-
itarian assistance by other States, organizations or private individuals does
not, however, relieve the occupying power of any of its responsibilities
towards the population of the occupied territory.942 Once such relief consign-
ments have arrived in the occupied territory, the occupying power must facil-
itate their rapid distribution943 and may not divert them from their intended
purpose, except in cases of urgent necessity in the interest of the local popu-
lation and with the consent of the Protecting Power.944 The distribution of
humanitarian relief supplies in occupied territory must be carried out with
the cooperation and under the supervision of the Protecting Power or of an
impartial humanitarian organization such as the ICRC.945

(c) Relief consignments for civilians in non-occupied territory
If the civilian population of any territory other than occupied territory is
not adequately provided with the supplies essential to its survival, treaty IHL
does not expressly oblige the belligerent party controlling that territory to
ensure adequate supplies. However, in the view of the ICRC, the obligation to
meet the basic needs of the civilian population, besides being an essential
element of State sovereignty, can be inferred by way of interpretation from
the object and purpose of IHL and from the obligation incumbent upon
parties to a conflict to treat all persons in their power humanely. In all cases,
IHL requires that relief actions “be undertaken, subject to the agreement of

938 GC IV, Art. 23(2); J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit.
(note 386), pp. 182–183.

939 GC IV, Art. 55(1); AP I, Art. 69(1).
940 GC IV, Art. 59(1) and (2); CIHL, Rule 55.
941 GC IV, Art. 62.
942 GC IV, Art. 60.
943 GC IV, Art. 61(2).
944 GC IV, Art. 60.
945 GC IV, Art. 61(1).

ICRC vehicles arrive at a British checkpoint outside the city of Basra in southern Iraq, Saturday,
29 March 2003. An attempt by British forces surrounding Basra to open the way for badly
needed humanitarian aid encountered resistance from Iraqi troops and paramilitaries. The ICRC
vehicles had to turn back for security reasons.

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population, thus depriving such action of its humanitarian necessity and
justification.938

(b) Relief consignments for civilians in occupied territory
The occupying power has a legal duty to ensure, to the fullest extent of the
means available to it, the provision of food, medical supplies, clothing,
bedding, shelter, and other supplies essential to the survival of the civilian
population.939 Accordingly, if all or part of the occupied territory is inade-
quately supplied, the occupying power must either bring in the necessary
goods or allow relief operations in behalf of the civilian population by other
States or by impartial humanitarian organizations such as the ICRC.940 In
principle, protected persons in occupied territories must also be permitted to
receive individual relief consignments sent to them.941 The delivery of human-
itarian assistance by other States, organizations or private individuals does
not, however, relieve the occupying power of any of its responsibilities
towards the population of the occupied territory.942 Once such relief consign-
ments have arrived in the occupied territory, the occupying power must facil-
itate their rapid distribution943 and may not divert them from their intended
purpose, except in cases of urgent necessity in the interest of the local popu-
lation and with the consent of the Protecting Power.944 The distribution of
humanitarian relief supplies in occupied territory must be carried out with
the cooperation and under the supervision of the Protecting Power or of an
impartial humanitarian organization such as the ICRC.945

(c) Relief consignments for civilians in non-occupied territory
If the civilian population of any territory other than occupied territory is
not adequately provided with the supplies essential to its survival, treaty IHL
does not expressly oblige the belligerent party controlling that territory to
ensure adequate supplies. However, in the view of the ICRC, the obligation to
meet the basic needs of the civilian population, besides being an essential
element of State sovereignty, can be inferred by way of interpretation from
the object and purpose of IHL and from the obligation incumbent upon
parties to a conflict to treat all persons in their power humanely. In all cases,
IHL requires that relief actions “be undertaken, subject to the agreement of

938 GC IV, Art. 23(2); J.S. Pictet (ed.), Commentary on the Fourth Geneva Convention, op. cit.
(note 386), pp. 182–183.

939 GC IV, Art. 55(1); AP I, Art. 69(1).
940 GC IV, Art. 59(1) and (2); CIHL, Rule 55.
941 GC IV, Art. 62.
942 GC IV, Art. 60.
943 GC IV, Art. 61(2).
944 GC IV, Art. 60.
945 GC IV, Art. 61(1).

ICRC vehicles arrive at a British checkpoint outside the city of Basra in southern Iraq, Saturday,
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vehicles had to turn back for security reasons.

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the Parties concerned.”946 IHL specifies that any such relief action must be
humanitarian, impartial and non-discriminatory in character, but requires
that, in the distribution of relief consignments, priority be given to particu-
larly vulnerable persons, such as children, expectant mothers, maternity
cases and nursing mothers.947 The requirement of consent reflects primarily
a compromise in favour of national sovereignty. Its practical consequences
should not be overstated, however, as the party in territorial control, whether
the legitimate government, a national liberation movement or a multi national
force mandated by the UN, is likely to have a strong political interest, if not
a legal obligation under national law, to ensure adequate supplies for the
civilian population. If a civilian population lacks supplies that are essential
to its survival and if a humanitarian organization that provides relief on an
impartial and non-discriminatory basis is able to remedy the situation, the
State or belligerent party concerned has a legal obligation under customary
IHL to give its consent.948 IHL also stipulates that offers of impartial humani-
tarian relief may not be regarded as interference in an armed conflict or as
unfriendly acts,949 and that the States concerned and each belligerent party
must even encourage and facilitate effective international coordination of

946 AP I, Art. 70(1).
947 Ibid.
948 CIHL, commentary on Rule 55, p. 197.
949 AP I, Art. 70(1).

254 CHAPTER 6

such assistance.950 Finally, once relief consignments have arrived in a conflict
area, the belligerent parties must protect them from the dangers of war and
facilitate their rapid distribution.951

3. Relief organizations and personnel
The Fourth Geneva Convention stipulates that all protected persons,
including those deprived of their liberty, have the right to communicate
their needs to Protecting Powers, relief organizations such as the ICRC and
the National Societies, or any other organizations offering humanitarian
assistance.952 Belligerent parties must, within the bounds of military or
security considerations, grant such organizations the freedom of movement,
rights of access and other facilities necessary to visit protected persons
wherever they may be, and to distribute relief supplies and educational,
recreational or religious materials to them.953 The number of organizations
allowed to carry out their activities in the areas concerned may be limited,
but such limitation must not hinder the supply of effective and adequate relief
to all protected persons.954 Where necessary, and with the approval of the
territorial State, relief personnel may participate in the transportation and
distribution of relief consignments.955 Such personnel and their equipment
must be respected and protected.956 Each belligerent party receiving relief
consignments must support such relief personnel to the fullest extent
practicable and may not restrict their activities and movements except
where temporarily required for reasons of imperative military necessity.957
Relief personnel must take into account the security requirements of the
party in whose territory they are carrying out their duties and may under no
circumstances exceed the terms of their mission. The mission of personnel
who do not respect these conditions may be terminated.958

950 AP I, Art. 70(5).
951 AP I, Art. 70(4).
952 GC IV, Art. 30(1).
953 GC IV, Arts 30(2) and (3) and 142(1); CIHL, Rule 56.
954 GC IV, Art. 142(2).
955 AP I, Art. 71(1).
956 AP I, Art. 71(2); CIHL, Rules 31 and 32.
957 AP I, Art. 71(3); CIHL, Rule 56.
958 AP I, Art. 71(4).

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 255

959

V. SPECIFIC ISSUES ARISING
IN NON-INTERNATIONAL ARMED CONFLICTS

1. The civilian population in non-international armed conflicts
Non-international armed conflicts take place, not between States, but
between States and organized armed groups or between such groups. Most
non-international armed conflicts split the population of the affected States
into opposing factions supporting one or the other party. While in the proxy
conflicts of the Cold War the opposing factions were usually politically
motivated, in many contemporary non-international armed conflicts the
divisions between the parties mirror ethnic, religious or linguistic differences.
All non-international armed conflicts have in common, however, that they

959 All ICRC documents available at: www.icrc.org

To go further (Humanitarian assistance)959

• Liberia: Hope at Last, film, ICRC, 2006. Available at: https://avarchives.icrc.org/
Film/1051

• Michael Bothe, “Relief actions: The position of the recipient State,” in Frits
Kalshoven (ed.), Assisting the Victims of Armed Conflict and Other Disasters,
Martinus Nijhoff, Dordrecht, 1989, pp. 91–98.

• Rebecca Barber, “Facilitating humanitarian assistance in international
humanitarian and human rights law,” IRRC, Vol. 91, No. 874, June 2009, pp.
371–399.

• Emanuela-Chiara Gillard, “The law regulating cross-border relief operations,”
IRRC, Vol. 95, No. 890, Summer 2013, pp. 351–382.

• Jelena Pejic, “The right to food in situations of armed conflict: The legal
framework,” IRRC, Vol. 83, No. 844, December 2001, pp. 1097–1110.

• Felix Schwendimann, “The legal framework of humanitarian access in armed
conflict,” IRRC, Vol. 93, No. 884, December 2011, pp. 993–1008.

How Does Law Protect in War?

• Case No. 41, ICRC, Assistance Policy

• Case No. 124, Israel/Gaza, Operation Cast Lead

• Case No. 177, UN, Security Council Resolution 688 on Northern Iraq

• Case No. 278, Angola, Famine as a Weapon

256 CHAPTER 6

may involve nationals of the same State on opposing sides, thus making it
difficult to accurately determine which part of the civilian population belongs
to each belligerent or has fallen into the power of an adverse party. All non-
international armed conflicts also have in common that the fighting forces of
a least one party to the conflict are formed of armed non-State actors who, for
all purposes other than the conduct of hostilities, are not provided with any
legal status different from that of the civilian population.960 IHL governing
non-international armed conflicts therefore does not protect civilians based
on their nationality, allegiance or status, or on the fact that they are in the
power of an adverse party. Instead, it simply protects all persons who are
not, or no longer, taking a direct part in hostilities, regardless of their status
during the hostilities and regardless also of whether they are in the power of a
State or of a non-State party. As will be seen, this specific approach permeates
the entire body of IHL governing non-international armed conflicts and is
therefore crucial to understanding it.

2. Humane treatment
The cornerstone of IHL governing non-international armed conflicts is
common Article 3. Often held to be the single most important provision of
contemporary treaty IHL, common Article 3 has rightly been described as a
“Convention in miniature” within the Geneva Conventions.961 In the view of
the ICJ, it is a “minimum yardstick” expressing elementary considerations of
humanity that must be regarded as binding in any armed conflict, regardless
of treaty obligations.962 In essence, common Article 3 provides that each party
to a non-international armed conflict, whether represented by a government
or an organized armed group, must comply as a minimum with the following
basic rule:

“Persons taking no active part in the hostilities, including members
of armed forces who have laid down their arms and those placed
‘hors de combat’ by sickness, wounds, detention, or any other cause,
shall in all circumstances be treated humanely, without any adverse
distinction founded on race, colour, religion or faith, sex, birth or
wealth, or any other similar criteria.”963

More specifically, common Article 3 prohibits the following acts “at any
time and in any place whatsoever”:

960 On the protection of the civilian population during hostilities, see Chapter 3.
961 ICRC, Commentary on the First Geneva Convention, 2nd ed. (2016), op. cit. (note 63), Art. 3.
962 ICJ, Nicaragua case, op. cit. (note 26), para. 218. Confirmed in ICTY, The Prosecutor v.

Dusko Tadić, op. cit. (note 69), para. 102.
963 GC I–IV, common Art. 3(1).

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 257

(a) violence to life and person, in particular murder, mutilation,
cruel treatment and torture;

(b) hostage-taking;
(c) outrages upon personal dignity, in particular humiliating and

degrading treatment;
(d) the passing of sentences and the carrying out of executions with-

out previous judgment pronounced by a regularly constituted
court, affording all the judicial guarantees which are recognized
as indispensable by civilized peoples.

Additional Protocol  II develops and supplements the protection provided
by common Article 3, most notably by formulating fundamental guaran-
tees aimed at ensuring the humane treatment of all persons who do not, or
no longer, take a direct part in hostilities, whether or not their liberty has
been restricted. Such persons are entitled to respect for their person, honour
and convictions and religious practices, and must in all circumstances be
treated humanely, without any adverse distinction.964 Additional Protocol II
develops the list of acts that are prohibited “at any time and in any place
whatsoever” as follows:

(a) violence to the life, health and physical or mental well-being of
persons, in particular murder, cruel treatment such as torture,
mutilation or any form of corporal punishment;

(b) collective punishments;
(c) taking of hostages;
(d) acts of terrorism;
(e) outrages upon personal dignity, in particular humiliating and

degrading treatment, rape, enforced prostitution and any form
of indecent assault;

(f ) slavery and the slave trade in all their forms;
(g) pillage;
(h) threats to commit any of the foregoing acts.965

These fundamental guarantees of humane treatment for persons not directly
participating in hostilities are part of customary IHL applicable in non-in-
ternational armed conflicts.966

3. Special protection for children
Experience shows that children affected by non-international armed
conflicts are particularly exposed to the risk of being separated from their

964 AP II, Art. 4(1).
965 AP II, Art. 4(2).
966 CIHL, Rules 87–105.

258 CHAPTER 6

families, recruited as child soldiers, or otherwise physically and mentally
abused. Additional Protocol  II therefore provides that, if required for
their protection, children should be temporarily removed from the area of
hostilities to a safer area within the country, whenever possible with the
consent of the children’s parents or other guardians. In any event, evacuated
children must be accompanied by persons responsible for their safety and
well-being. All appropriate steps must be taken to facilitate the reunification
of families who have been temporarily separated and, in the meantime,
children must be given an education in keeping with the wishes of their
parents or others responsible for their care. In no case may children below
the age of 15 be recruited into armed forces or armed groups, or allowed to
take part in hostilities. Moreover, children who are captured after having
directly participated in hostilities contrary to this prohibition remain
entitled to the special protection afforded to children under IHL.967

➝ On the prohibition against child recruitment under human rights
law, see Section I.4.b. above.

4. Prohibition of forced displacement
The forced movement of parts of the civilian population has been a recurrent
problem in non-international armed conflicts. Often described as “ethnic
cleansing,” such forced movements are usually rooted in policies of ethnic or
racial hatred; they tend to be accompanied by the most shocking atrocities,
ranging from systematic rape, looting and murder to outright genocide.968
Needless to say, in almost all cases the humanitarian consequences of forced
population movements are disastrous. Additional Protocol II therefore pro-
hibits the parties to a conflict from ordering the forced displacement of the
civilian population for reasons related to the conflict, unless required for the
security of the civilians involved or for imperative military reasons.969 It is
clear that this prohibition is not intended to prevent the voluntary move-
ment of the civilian population or of individual civilians trying to escape the
dangers of the combat zone, or for any other reason,970 nor does it cover
forced displacements for reasons unrelated to the armed conflict, such as the
forcible evacuation of areas affected by natural disasters.971 In those excep-
tional cases where forcible displacement within a territory is permitted, all

967 AP II, Art. 4(3).
968 The conflicts in the former Yugoslavia (1991–1999) and the genocide in Rwanda (1994)

are well-documented examples of such policies.
969 AP II, Art. 17(1); CIHL, Rule 129 B.
970 Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Protocols,

op.cit. (note 6), para. 4851.
971 Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Protocols,

op. cit. (note 6), para. 4855.

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 259

possible measures must be taken to ensure that the civilian population can
be received under satisfactory conditions of shelter, hygiene, health, safety
and nutrition.972 Additional Protocol II also provides that civilians may not
be compelled to leave “their own territory” for reasons connected with the
conflict.973 In principle, this means that civilians may not be expelled from
the national territory of a State party to a conflict, as has tragically happened
in a number of non-international armed conflicts.974 In situations where an
extensive part of the territory is controlled by an insurgent party, this prohi-
bition could arguably be interpreted as also covering the expulsion of civil-
ians from such areas.975

5. Relief consignments in non-international armed conflicts
Treaty IHL regulating humanitarian assistance in situations of non-interna-
tional armed conflict is not as developed as that governing international
armed conflicts. Nevertheless, just as in situations of international armed
conflict, customary and treaty IHL governing non-international armed con-
flicts prohibits the use of starvation of the civilian population as a method

972 AP II, Art. 17(1); CIHL, Rule 131.
973 AP II, Art. 17(2).
974 For example, the expulsion from Kosovo to Albania and the former Yugoslav Republic

of Macedonia of approximately 800,000 ethnic Albanians by Yugoslav forces in the
spring of 1999.

975 Y. Sandoz, C. Swinarski, B. Zimmermann (eds), Commentary on the Additional Protocols,
op. cit. (note 6), para. 4859.

ICRC physical rehabilitation centre in Najaf, Iraq, 2014. Father and son awaiting an assessment.

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of warfare976 and obliges each party to a conflict to allow and facilitate the
delivery of impartial humanitarian relief consignments for civilians in need
of supplies essential to their survival.977 More specifically, Additional Pro-
tocol  II provides: “If the civilian population is suffering undue hardship
owing to a lack of the supplies essential for its survival, such as foodstuffs
and medical supplies, relief actions for the civilian population which are of
an exclusively humanitarian and impartial nature and which are conducted
without any adverse distinction shall be undertaken subject to the consent of
the High Contracting Party concerned.”978

Both common Article 3 and Additional Protocol  II also stipulate that
impartial relief organizations, such as the ICRC or the National Societies,
may offer to perform their traditional functions for the victims of an armed
conflict.979 Humanitarian relief operations inevitably require the consent of
the territorial State. This requirement may prove problematic, particularly
where the relief supplies in question are destined for territory controlled by
an insurgent party to a conflict. Nevertheless, today, any arbitrary refusal by
a government to allow impartial humanitarian assistance to its own popu-
lation in such areas would, most likely, have to be regarded as unlawful not
only as a matter of customary IHL, but also as a matter of human rights
law.980

981

976 AP II, Art. 14; CIHL, Rule 53. See also Chapter 3.II.2.c.
977 CIHL, Rules 55 and 56.
978 AP II, Art. 18(2).
979 GC I–IV, common Art. 3(2); AP II, Art. 18(1).
980 CIHL, commentary on Rule 55.
981 All ICRC documents available at: www.icrc.org

To go further (Specific issues arising in non-international armed conflicts)981

• Jan Willms, “Without order, anything goes? The prohibition of forced
displacement in non-international armed conflict,” IRRC, Vol. 91, No. 875,
December 2009, pp. 547–565.

• ICRC, Enhancing Protection for Civilians in Armed Conflict and Other
Situations of Violence, ICRC, Geneva, 2012, 90 pp.

• “Civilians,” webpage, ICRC. Available at: https://www.icrc.org/en/war-and-
law/protected-persons/civilians

CIVILIANS IN ENEMY-CONTROLLED TERRITORY 261

How Does Law Protect in War?

• Case No. 153, ICJ, Nicaragua v. United States

• Case No. 164, Sudan, Report of the UN Commission of Inquiry on Darfur

• Case No. 274, Armed Conflicts in Sierra Leone, Liberia and Guinea (1980–2005)

• Case, UN Security Council Resolution on the Conflict in Syria (only
available online)

Chapter 7
Implementation and
enforcement of IHL

Geneva International Conference Centre, Switzerland. 31st International Conference of the
Red Cross and Red Crescent, 2011.

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Structure
I. Factors influencing compliance with IHL
II. Duty of belligerents “to respect and to ensure respect”
III. Ensuring respect at international level
IV. State responsibility and reparations
V. Individual criminal responsibility for violations of IHL
VI. Judicial enforcement
VII. Non-judicial enforcement
VIII. Specific issues arising in non-international armed conflicts

In a nutshell

➝ All States must respect and ensure respect for IHL in all cir-
cumstances. More specifically, States must take all necessary
measures to implement IHL within their own jurisdictions;
they must not encourage violations by belligerent parties, and
must exert their influence, as far as possible, to end such viola-
tions.

➝ Moreover, all States must strive to find and prosecute or extra-
dite any person alleged to have committed or ordered the com-
mission of war crimes, and take all measures necessary to end
any other violations of IHL.

➝ Military commanders and other superiors bear criminal re-
sponsibility for war crimes committed by persons under their
effective control, if they failed to take all necessary and reason-
able measures within their power to prevent or repress such
crimes, or to refer the matter to the competent authorities for
investigation and prosecution.

➝ As a general rule, national institutions and procedures are re-
sponsible for the adjudication and/or prosecution of IHL vio-
lations, while international mechanisms play a subsidiary and
complementary role and are activated only if national mecha-
nisms fail to operate effectively.

➝ In non-international armed conflicts, non-State armed groups
must also ensure respect for IHL, and prevent and punish vio-
lations.

➝ In practice, the effective implementation and enforcement of
IHL still largely depends on non-judicial mechanisms for mon-
itoring, complaints and implementation.

IMPLEMENTATION AND ENFORCEMENT OF IHL 265

982
As we have seen in the preceding chapters, over the course of the last 150
years, IHL has become one of the most extensively codified areas of inter-
national law, supplemented by a comprehensive body of customary rules.
Today, IHL imposes wide-ranging restrictions on the means and methods
of warfare, and provides detailed regimes of protection for the civilian pop-
ulation and other categories of people affected by conflict. In doing so, con-
temporary IHL effectively disproves Cicero’s dictum, silent enim leges inter
arma (in times of war, the laws fall silent), and makes it abundantly clear
that armed conflicts, and those who engage in them, are not exempt from
the rule of law.

Experience has shown, however, that the mere existence of humanitarian rules
does not prevent or alleviate the immense suffering caused by armed con-
flicts, or ensure acceptable conduct by belligerents. Indeed, as the ICRC has
observed, “the main cause of suffering during armed conflicts and of violations
of IHL remains the failure to implement existing norms – whether owing to
an absence of political will or for another reason – rather than a lack of rules
or their inadequacy.”983 It is therefore extremely important to examine the
factors that influence compliance with IHL, as well as the various individual
and collective measures that may be adopted to implement or enforce IHL.

I. FACTORS INFLUENCING COMPLIANCE WITH IHL

Difficulties relating to the implementation and enforcement of IHL in actual
conflict situations are often regarded as a weakness of this body of law. What
purpose does the law of armed conflict serve when its rules are not respected
and cannot be effectively enforced? Why should the same rules apply both to

982 All ICRC documents available at: www.icrc.org
983 ICRC, “‘International humanitarian law and the challenges of contemporary armed con-

flicts’ Document prepared for the 30th International Conference of the Red Cross and
Red Crescent, Geneva, Switzerland, 26–30 November 2007,” Geneva, Switzerland, 26–30
November 2007, IRRC, Vol. 89, No. 867, September 2007, p. 721.

To go further982

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 13: Implementation mechanisms,
State responsibility and Criminal repression, pp. 354–444.

• “Generating respect for the law,” IRRC, Vol. 96, No. 895/896, Autumn–Winter
2014.

266 CHAPTER 7

aggressor States and to States exercising their right to self-defence, or to both
law-abiding belligerents and those who deliberately break the law? Why
should belligerent action be restrained at all, when the whole purpose of
war is to survive a potentially deadly threat from the enemy? Indeed, IHL is
violated in almost all armed conflicts and by virtually all belligerent parties.
Some of the atrocities committed in war have unleashed unspeakable horror
and suffering on civilians and combatants alike. It is also true, however,
that belligerents regularly show remarkable restraint and humanity, even
under the most difficult circumstances, and often above and beyond what is
required by IHL.

A broad range of factors influence compliance with IHL during war,
including:

• Self-interest: the oldest and most effective motive for restricting
the means and methods of warfare has always been military, eco-
nomic and administrative self-interest. Particularly in terri torial
conflicts, the destruction of the enemy’s logistical, industrial and
agricultural infrastructure and the killing or displacement of large
numbers of civilians not only renders military invasion and oc-
cupation more difficult, but also requires extensive humanitarian
assistance and reconstruction efforts in the territories concerned.
The tolerance of widespread violations and abuse by individual
soldiers also undermines the discipline of the operating forces as a
whole and significantly diminishes their military value.

• Expectation of reciprocity: at least in classic confrontations be-
tween uniformed armed forces or groups, the expectation of reci-
procity continues to influence the behaviour of belligerents, even
though IHL is binding regardless of whether it is respected by an
enemy. Belligerents are more likely to treat captured civilians and
prisoners of war with humanity and consideration if they can be
confident that the opposing party will do the same. Expectations of
reciprocity are increasingly undermined, however, in asymmetrical
confrontations between highly organized, well-equipped belliger-
ents and loosely organized forces, unable or unwilling to respect
IHL.

• Mutual trust and respect: although relations between belligerents
may have deteriorated to the point of armed conflict, their uncon-
ditional compliance with the laws and customs of war provides
a basis for mutual respect and trust, which are indispensable to
future efforts to achieve peace and reconciliation.

IMPLEMENTATION AND ENFORCEMENT OF IHL 267

• Public opinion: particularly given the rapid development of com-
munication technology during the past two decades, omnipresent
media reporting of ongoing armed conflicts can have a decisive
impact on domestic public opinion and exert considerable pres-
sure on governments to ensure that their armed forces respect
IHL. In certain cases, such reports may also trigger national or
international inquiries, or even domestic or international crim-
inal proceedings against alleged perpetrators. For example, in
2003, reports of the systematic torture and abuse of Iraqi prisoners
held by the United States in Abu Ghraib prison caused a public
scandal that greatly damaged the reputation of the United States
government, and ultimately led to the prosecution and conviction
of several members of the armed forces.

• Criminalization as a deterrent: last but not least, the conduct of
belligerent parties and the individual politicians, soldiers and ci-
vilians acting on their behalf is also influenced by the prospect
and stigma of criminal prosecution and sanctions. The primary
responsibility for prosecuting IHL violations traditionally falls to
States themselves. However, during the past two decades, several
international criminal courts and tribunals have been success fully
established. In spite of many difficulties and limitations, these
bodies have considerably increased the effectiveness of prosecu-
tions and the probability of sanctions for violations of IHL in cases
where States are unable or unwilling to assume their primary
responsibility in this respect. 984

984 All ICRC documents available at: www.icrc.org

To go further (Factors influencing compliance with IHL)984

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 13: Implementation Mech-
anisms, pp. 441–444.

• ICRC, The Roots of Behaviour in War: A Survey of the Literature, ICRC,
Geneva, 2004, 120 pp.

• Greenberg Research Inc., The People on War Report: ICRC Worldwide
Consultation on the Rules of War, 1999, 102 pp.

• Olivier Bangerter, “Reasons why armed groups choose to respect inter national
humanitarian law or not,” IRRC, Vol. 93, No. 882, June 2011, pp. 353–384.

268 CHAPTER 7

II. DUTY OF BELLIGERENTS
“TO RESPECT AND TO ENSURE RESPECT”

1. The general principle
The general principle governing the enforcement and implementation of
IHL is that each State has a duty to respect and to ensure respect for IHL
in all circumstances.985 At the most basic level, it reflects the legal maxim
pacta sunt servanda, according to which States must fulfil all obligations
arising from a treaty to which they are party.986 The treaty-law term “in all
circumstances” also implies the principle of non-reciprocity, according to
which belligerents must respect their humanitarian obligations even when
those obligations are violated by their adversary.987 Indeed, it is a particular
feature of IHL that non-respect for humanitarian treaty obligations by one
party cannot justify the suspension or termination of the treaty by any other
party.988 Nor can the denunciation of IHL treaties by a belligerent party
take effect until after the end of any armed conflict ongoing at the time the
denunciation was issued.989 Moreover, belligerent reprisals are permitted
only in extremely specific circumstances and must never be directed against
protected persons or objects.990 The ICJ even held that the duty to respect
and ensure respect constituted a general principle of IHL, applicable in all
armed conflicts and irrespective of treaty obligations.991 Conceptually, this
duty has several aspects, namely: (1) a negative duty to abstain from any
deliberate violation of IHL; (2) a positive internal duty to ensure the national
implementation and application of IHL; and (3) a positive external duty of
States to exert bilateral or multilateral pressure on other States or belligerent
parties to comply with IHL.

2. National implementation and enforcement
In line with their duty to respect and to ensure respect for IHL, belligerent
parties and non-belligerent States are expressly required to take “all neces-
sary measures” to fulfil their obligations within their jurisdictions.992 This
may include a broad range of preventive, supervisory, and punitive meas-
ures, including: (a) domestic legislation and regulations; (b) instructions,

985 GC I–IV, common Art. 1; AP I, Art. 1(1); CIHL, Rule 139.
986 Vienna Convention on the Law of Treaties, Art. 26.
987 GC I–IV, common Arts 1 and 3; CIHL, Rule 140.
988 Vienna Convention on the Law of Treaties, Art. 60(5).
989 GC I–IV, Arts 63, 62, 142 and 158 respectively; AP I, Art. 99; AP II, Art. 25.
990 GC I, Art. 46; GC II, Art. 47; GC III, Art. 13; GC IV, Art. 33; CIHL, Rules 145–147.
991 ICJ, Nicaragua case, op. cit. (note 26), para. 220.
992 AP I, Art. 80(1). See also GC I, Art. 49(2); GC II, Art. 50(2); GC III, Art. 129(2); GC IV

Art. 146(2).

IMPLEMENTATION AND ENFORCEMENT OF IHL 269

military orders and legal advice; (c) training and the dissemination of all
pertinent information; (d) the establishment of national IHL committees;
(e) technical preparation; and (f) criminal repression.

(a) Domestic legislation and regulations
To ensure that IHL is respected in practice, it must become part of national
law. Depending on the national legal system, IHL treaties may become directly
binding as a matter of national law (self-executing treaty law).993 Where treaty
law does not automatically apply,994 States have an international legal obli-
gation to pass the relevant legislative acts to incorporate its provisions in
national law.995 In order to implement certain treaty provisions, States may
need to pass new legislation at domestic level in order to bring national crim-
inal law and proceedings into line with these provisions (nulla poena sine lege).
For example, both the 1949 Geneva Conventions and Additional Protocol  I
expressly require States to “enact any legislation necessary to provide effective
penal sanctions for persons committing, or ordering to be committed” grave
breaches of IHL,996 and to ensure that their national legislation adequately
prevents and punishes misuse of the distinctive emblems of the red cross, red
crescent and red crystal.997 There is no formal procedure for “incorporating”
customary IHL in national law. However, in certain countries, customary
international law may be directly invoked in judicial proceedings.998

(b) Orders, instructions and legal advice
In addition to enacting the relevant legislation, States and belligerent parties
must also “give orders and instructions to ensure observance” of IHL and
“supervise their execution.”999 The role of military commanders is of particular
importance in this respect. States and belligerent parties must require military
commanders to prevent and, where necessary, put an end to IHL violations
committed by members of the armed forces under their command, or other
persons under their control, and to report such violations to the competent
authorities.1000 In particular, commanders must ensure, commensurate with
their level of responsibility, that members of the armed forces under their
command are aware of their obligations under IHL.1001 If commanders become

993 See, for example, the French Constitution (1958), Art. 55.
994 This is the case, for example, in the United Kingdom.
995 See the references to national implementing legislation in GC I, Art. 48; GC II, Art. 49;

GC III, Art. 128; GC IV, Art. 145; AP I, Art. 84.
996 GC I, Art. 49(1); GC II, Art. 50(1); GC III, Art. 129(1); GC IV, Art. 146(1); AP I, Art. 85(1).
997 GC I, Art. 54; GC II, Art. 55.
998 This is the case, for example, in Israel. See High Court of Justice, Public Committee

against Torture in Israel et al. v. Government of Israel et al., 769/02, 2005, para. 19.
999 AP I, Art. 80(2). See also GC I, Art. 45 and GC II, Art. 46.
1000 AP I, Art. 87(1).
1001 AP I, Art. 87(2); CIHL Rule 142.

270 CHAPTER 7

aware that subordinates, or other persons under their control, have committed,
or are about to commit, violations of IHL, they must take the necessary steps
to prevent such violations and, where appropriate, initiate disciplinary or
penal action against the perpetrators.1002 In order to enable military
commanders to fulfil their responsibilities, States and belligerent parties must
ensure that, whenever necessary, legal advisers properly trained in IHL are
available at the appropriate command level to provide advice on the application
of IHL, and that the appropriate instruction is given to the armed forces.1003 As
indicated in Section V below, the special role of commanders does not relieve
their subordinates of personal criminal responsibility for IHL violations.

(c) Training and dissemination
In order to ensure respect for IHL, not only commanders, but all members
of the armed forces must be adequately trained in its application. States must
include IHL in military doctrine and training programmes, and take it into
account when selecting military equipment. They must also ensure that an
effective sanctions system exists both in peacetime and in wartime, and that
all military and civilian authorities responsible for the practical application
of IHL during armed conflict are fully acquainted with the relevant trea-
ties.1004 For example, persons involved in the legal review of new weapons,

1002 AP I, Art. 87(3).
1003 AP I, Art. 82; CIHL, Rule 141.
1004 AP I, Art. 83(2).

China, 2014. Military officers from around the world at the ICRC’s Senior Workshop on Interna-
tional Rules governing Military Operations (SWIRMO).

P.
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IMPLEMENTATION AND ENFORCEMENT OF IHL 271

means or methods of warfare must be fully aware of all the applicable pro-
visions of international law relating to the permissibility of such means or
methods of warfare.1005 Furthermore, authorities involved in investigating
and prosecuting war crimes must be familiar not only with the substantive
provisions of IHL, but also with the applicable judicial guarantees or other
procedural safeguards. Moreover, troops participating in UN ‘peace-sup-
port operations’ must be fully acquainted with the principles and rules of
IHL.1006 Beyond ensuring that all military and civilian authorities receive
IHL training in line with their responsibilities and needs, States are also
obliged to disseminate IHL as widely as possible, including by encouraging
the study of IHL at university level.1007 The ultimate goal is to ensure that the
entire population is familiar with – and supports – the basic principles of
IHL, thus creating a social environment conducive to ensuring compliance
with this crucial body of law.

(d) National IHL committees
Thanks to the encouragement and support of the ICRC, more than 100 States
have already established national IHL committees to advise and assist their
governments on the implementation and dissemination of IHL.1008 While IHL
does not expressly require the creation of such committees, they have proved
useful in helping States to fulfil their IHL obligations and to coordinate the
relevant government services and agencies. Ideally, national IHL commit-
tees should be composed of representatives of all State services responsible
for the implementation and enforcement of IHL – such as the ministries of
defence, foreign affairs, internal affairs, justice and education – as well as
senior members of the armed forces, members of the legislative and judici-
ary branches, academic experts and representatives of National Societies.
National IHL committees are often best placed to evaluate whether a State’s
IHL obligations have been adequately incorporated in the domestic legal order
and, if they have not, to propose the relevant remedies. They can monitor,
provide guidance and advise national authorities on the interpretation and
application of IHL. They can also play an important role in the national dis-
semination and promotion of IHL, and training related thereto, in military,
governmental and academic circles. Depending on the context, it may also
be useful for national IHL committees to share expertise, experience, good
practices and challenges, and to cooperate in matters relating to IHL.

1005 AP I, Art. 36.
1006 United Nations Secretary-General’s Bulletin: Observance by United Nations Forces of

International Humanitarian Law, op. cit. (note 113), Section 3.
1007 GC I, Art. 47; GC II, Art. 48; GC III, Art. 127; GC IV, Art. 144; AP I, Art. 83. See also AP

II, Art. 19; CIHL, Rules 142 and 143.
1008 The list is available at: https://www.icrc.org/en/download/file/1135/table-of-national-ihl-

committees-icrc-eng.pdf

272 CHAPTER 7

(e) Technical preparations
In order to ensure respect for IHL in situations of armed conflict, certain
technical measures should already be taken in peacetime.1009 This includes,
first and foremost, the systematic legal review of new weapons, means and
methods of warfare as required by Article 36 of Additional Protocol I, in order
to examine their permissibility under IHL and other applicable provisions of
international law. It is also possible for a previously lawful weapon system
already in the arsenal of a State to become unlawful following the ratification
or entry into force of a new weapons treaty, as was the case with the ratifica-
tion by the Syrian Arab Republic of the Chemical Weapons Convention in
2013, and the entry into force in numerous States of the Anti-Personnel Mine
Ban Convention or the Convention on Cluster Munitions. States must there-
fore establish procedures to identify and destroy such weapon systems.

➝ On the obligation to conduct legal weapons reviews, see Chapter 3.V.5.

In order to protect hospitals, ambulances and medical personnel in situ-
ations of armed conflict, each State party to the 1949 Geneva Conventions
should – already in peace time – notify the other States of the names of the
societies that it has authorized to assist the regular medical services of its
armed forces.1010 Moreover, in practical terms, the relevant infrastructure
should be marked with the distinctive emblem of the red cross, red crescent
or red crystal during peacetime, and medical aircraft, including helicop-
ters, should be marked and equipped with the technical means necessary
to allow their identification by an opposing belligerent party. It should be
noted, however, that such measures remain subject to the restrictions and
regulations governing the peacetime use of the emblem.1011 Similarly, civil
defence installations, vehicles and personnel, cultural property and instal-
lations containing dangerous forces, such as dams or nuclear plants, should
be marked with the respective distinctive signs foreseen under IHL.1012

➝ On the use of the distinctive emblem, see Chapter 4.V.

Last but not least, in terms of technical measures to better protect
the civilian population in armed conflicts, States may jointly establish

1009 GC I–IV, common Art. 2 refers to “provisions which shall be implemented in peacetime.”
1010 GC I, Art. 26(2).
1011 GC I, Art. 44; GC II, Art. 44; AP I, Art. 18; Art. 13 of the Regulations on the use of the

Emblem of the Red Cross or the Red Crescent by the National Societies, adopted by
the 20th International Conference of the Red Cross (Vienna, 1965) and revised by the
Council of Delegates (Budapest, 1991).

1012 AP I, Arts 56(7) and 66(7); AP I, Annex I, Art. 16; Hague Convention on Cultural
Property, Art. 6.

IMPLEMENTATION AND ENFORCEMENT OF IHL 273

demilitarized zones already in peacetime.1013 They may also unilaterally
establish hospital and safety zones and localities, in which case they must
notify each other accordingly.1014 Furthermore, in order to avoid or mini-
mize the exposure of civilians and civilian objects to incidental injury or
damage, States should endeavour to separate fixed installations likely to
become military targets during conflict from those likely to remain civilian
objects. In particular, States should avoid locating such potential military
targets in, or near, densely populated areas.1015

➝ On hospital and safety zones and localities, see Chapter 4.IV.1.

➝ On demilitarized zones, see Chapter 3.II.3.b.

➝ On precautions against attacks, see Chapter 3.III.3.

(f ) Criminal repression and suppression of violations
States also have a duty to investigate alleged war crimes and prosecute or extra-
dite suspected perpetrators, and to put an end to any other violations of IHL.1016
1017

1013 AP I, Art. 60(2).
1014 GC I, Art. 23 and Annex I, Art. 7; GC IV, Art. 14 and Annex I, Art. 7.
1015 AP I, Art. 58; CIHL, Rule 23.
1016 See Section V.3. below.
1017 All ICRC documents available at: www.icrc.org

To go further (Duty of belligerents to “respect and to ensure respect”)1017

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect in
War?, ICRC, Geneva, 2011, Vol. I, Chapter 13: Implementation mechanisms,
pp. 356–363.

• Knut Dörmann and Jose Serralvo-Perez, “Common Article 1 to the Geneva
Conventions and the obligation to prevent international humanitarian law
violations,” IRRC, Vol. 96, No. 895/896, Autumn–Winter 2014.

• Elizabeth Stubbins Bates, “Towards effective military training in international
humanitarian law,” IRRC, Vol. 96, No. 895/896, Autumn–Winter 2014.

• ICRC, “National Enforcement of International Humanitarian Law,” informa-
tion kit, ICRC, Geneva, 2014. Available at: https://www.icrc.org/eng/resourc-
es/documents/legal-fact-sheet/national-enforcement-ihl-information-kit.htm

274 CHAPTER 7

III. ENSURING RESPECT AT INTERNATIONAL LEVEL

1. Erga omnes character of humanitarian obligations
IHL gives rise to erga omnes obligations, namely legal duties not only
towards opposing belligerent parties, but towards all other States party
to a particular treaty or, in the case of customary law, towards the inter-
national community as a whole.1018 Therefore, all States, irrespective of their
involvement in an armed conflict, are legally entitled to issue a demand to
any belligerent party to respect IHL and to put an end to alleged violations.
Beyond this discretionary right, however, the external aspect of the
obligation to ensure respect for IHL in all circumstances also implies that
States have a negative duty not to encourage violations of IHL by belligerent
parties,1019 as well as a positive duty to exert their influence, as far as possible,
to end such violations.1020

2. Means of influence available to individual States
Individual States may try to influence belligerent parties through diplomatic
channels, confidential representations or public appeals, and through legal

1018 GC I–IV, common Art. 1.
1019 See Section IV.2.
1020 ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016, op. cit. (note 63),

Art. 1; CIHL, Rule 144.

• ICRC, The Domestic Implementation of International Humanitarian Law:
A Manual, ICRC, Geneva, 2013, 341 pp.

• ICRC, Decision-Making Process in Military Combat Operations, ICRC,
Geneva, 2013, 53 pp.

• ICRC, Integrating the Law, ICRC, Geneva, 2007, 43 pp.

• ICRC, Commentary on the First Geneva Convention, 2nd ed.,
ICRC/Cambridge University Press, 2016, Article 1.

How Does Law Protect in War?

• Document No. 29, European Union Guidelines on Promoting Compliance
with International Humanitarian Law

• Document No. 52, First Periodical Meeting, Chairman’s Report

• Case No. 69, Ivory Coast, National Interministerial Commission

• Case No. 139, UN, Resolutions and Conference on Respect for the Fourth
Convention

IMPLEMENTATION AND ENFORCEMENT OF IHL 275

action before any competent international judicial forum.1021 However,
violations of IHL by one State cannot in themselves provide a legal basis for
armed intervention by third States, whether in the form of “humanitarian
intervention,” or action in accordance with what has become known,
within the UN framework, as the “responsibility to protect” (R2P).1022 The
lawfulness of the use of force between States is a matter of jus ad bellum,
regulated by the UN Charter and customary law, which is a normative
framework distinct from IHL. In practice, individual States or groups of
States regularly bring their concerns regarding respect for IHL in certain
contexts before regional or international organizations, such as the African
Union or the UN, which are often able to exert stronger political, economic
or military influence than individual States.

3. Enforcement through the UN system

(a) Duty to “ensure respect” for IHL and the objectives of the UN
IHL violations are committed in virtually all armed conflicts by nearly all
the parties involved. As long as unlawful conduct remains limited to iso-
lated and sporadic acts committed by individual soldiers or units, they can
be dealt with adequately through the internal preventive, supervisory and
repressive mechanisms of the party concerned. Where IHL violations reach
a certain level of gravity or frequency, however, treaty IHL expressly refers
States to the UN system. Thus, in situations involving serious violations of
the 1949 Geneva Conventions or of Additional Protocol I, the States party
to these instruments are obliged “to act, jointly or individually, in co-oper-
ation with the United Nations and in conformity with the United Nations
Charter.”1023 Indeed, it is one of the specific objectives of the UN to achieve
international cooperation, inter alia, in solving international humanitarian
problems and promoting respect for human rights.1024 Moreover, serious
IHL violations are likely to exacerbate ongoing conflicts and, therefore,
further undermine international peace and security.

(b) The duty to “ensure respect” and the “responsibility to protect”
The duty of States to cooperate with the UN in responding to serious
violations of IHL is partly reflected in the concept of the responsibility to
protect (R2P). R2P, which is non-binding, was adopted in 2005 within the

1021 See Section VII.
1022 See Section III.3.b. See also 2005 World Summit Outcome, A/RES/60/1, United Nations,

New York, 24 October 2005, paras 138–139. Available at: https://www.google.com/url?sa
=t& rc t=j&q=&esrc=s&sou rce=web&cd=1& ved=2a hU K Ew i m5MqM6P_ k A hV Pa-
VAKHZCFBTEQFjAAegQIABAC&url=https%3A%2F%2Fwww.un.org%2Fen%2Fde-
velopment%2Fdesa%2Fpopulation%2Fmigration%2Fgeneralassembly%2Fdocs%2F-
globalcompact%2FA_RES_60_1.pdf&usg=AOvVaw0B3qbnusgSK4gk8x3m7ZKA

1023 AP I, Art. 89.
1024 UN Charter, Art. 1.

276 CHAPTER 7

UN framework and is based on the following three pillars: (1) States are
responsible for protecting their own citizens from “mass crime,” namely
genocide, war crimes, crimes against humanity, and ethnic cleansing;
(2)  the international community is responsible for assisting States in
fulfilling their own primary responsibility; and (3) if a State manifestly fails
to protect its citizens, and peaceful measures have failed, the international
community must be prepared to intervene, including through the use of
coercive measures such as economic sanctions or, subject to authorization
by the UN Security Council, military intervention.1025 While R2P is not
legally binding, it has a broader scope than IHL in that it also covers crimes
other than IHL violations, and explicitly provides for the possibility of
military intervention, if authorized by the UN.

(c) The role of UN organs, mechanisms and agencies
In the majority of contemporary armed conflicts, one or several UN organs,
mechanisms or agencies are involved in some way. First and foremost, at the
political level, the UN Security Council, the UN Secretary-General, the UN
General Assembly,1026 the Human Rights Council, and the various Special
Rapporteurs, expert groups and agencies established or mandated within
the UN framework regularly express their concerns, views and recom-
mendations with regard to IHL violations. Moreover, the Offices of the
United Nations High Commissioner for Refugees (UNHCR) and for
Human Rights (OHCHR), as well as UN entities such as the World Food
Programme (WFP), the United Nations Development Programme (UNDP)
and the United Nations Children’s Fund (UNICEF), often deal with, and
provide assistance to, persons affected by armed conflict, including victims
of IHL violations. Although UN organs and agencies are not necessarily
neutral and impartial humanitarian actors, their public statements and
practice certainly have a considerable impact on belligerent parties and
international public opinion in general. It is beyond the scope of this book
to provide a comprehensive overview at this point of how UN organs, mech-
anisms and agencies contribute to ensuring respect for IHL, but we will
briefly consider the unique role of the UN Security Council in this regard.

(d) The special role of the UN Security Council
If the UN Security Council deems that the scale or intensity of IHL viola-
tions occurring in a particular context is a threat to international peace and
security, it can decide on measures to be taken under Chapters VI and VII
of the UN Charter, in order to put an end to the unlawful conduct. In prac-
tice, the Council will first adopt a resolution calling on the State concerned

1025 See 2005 World Summit Outcome, op. cit. (note 1022).
1026 For examples, see the case studies from How Does Law Protect in War? in “To go further

(Ensuring respect internationally).”

IMPLEMENTATION AND ENFORCEMENT OF IHL 277

to respect its international obligations.1027 Depending on the circumstances,
the Council may also call on all other States to cease or abstain from provid-
ing support to the perpetrator.1028 The Council may also deploy peacekeep-
ers to supervise the proper implementation of its resolutions, or to observe
how the situation develops on the ground. Should the State in question be
unwilling to cooperate with the UN, the Council may impose economic
sanctions or other coercive measures including, as a last resort, the use of
force. It is important to note, however, that the primary purpose of action
taken by the Security Council, in accordance with the UN Charter, is to
maintain or restore international peace and security, and not necessarily to
ensure respect for IHL.

Since the end of the Cold War, the Security Council’s work has increasingly
involved measures to ensure IHL compliance. The Security Council is
currently the only multilateral institution capable of effectively enforcing
international law, even against the will of the States concerned. Despite
the Council’s primarily political mandate and selective practice, some
of its responses to serious violations of IHL have contributed decisively
to strengthening the credibility and implementation of this body of law.
Measures worthy of mention include the establishment of the ICTY and the
ICTR,1029 the creation of the United Nations Compensation Commission
for Iraq,1030 and the referral of the situations in Darfur and in Libya to the
ICC.1031 Another important recent development is that the Security Council
now almost routinely includes protection activities in the mandates of UN
peacekeeping forces, State coalitions and regional organizations, including
authorization to use force – if necessary – to protect civilians and guarantee
humanitarian access.1032 The Security Council has also created several
working groups and engaged in debates on the protection of vulnerable
categories of people, such as civilians, children and humanitarian workers

1027 The UN Security Council has done this in various resolutions concerning, inter alia,
the conflicts in Iraq (e.g. Resolution 1483, 22 May 2003), Lebanon (Resolution 1701,
11 August 2006), Somalia (Resolution 1863, 16 January 2009), Afghanistan (e.g. Resolu-
tion 1917, 22 March 2010) and Sudan (e.g. Resolution 1919, 29 April 2010).

1028 For example, UN Security Council Resolutions 465 of 1 March 1980 (para. 7) and 471 of
5 June 1980 (para. 5) concerning Israel and the occupied Palestinian territory.

1029 UN Security Council Resolutions 827 (25 May 1993) and 955 (8 November 1994), respectively.
1030 UN Security Council Resolution 692 (20 May 1991).
1031 UN Security Council Resolutions 1593 (31 March 2005) and 1970 (26 February 2011).
1032 UN peacekeeping missions tasked with such a protective mandate include: UNAMSIL

in Sierra Leone; MONUC and MONUSCO in the Democratic Republic of the Congo;
UNMIS in Sudan; MINURCAT in the Central African Republic and Chad; UNIFIL in
Lebanon; and UNOCI in Côte d’Ivoire. Examples of regional peacekeeping forces or co-
alitions of States having such a mandate are the joint UN/African Union forces in Darfur
(UNAMID), the European Union forces in Chad, the Central African Republic and the
Democratic Republic of the Congo, and the French forces in Côte d’Ivoire.

278 CHAPTER 7

in armed conflicts.1033 Last but not least, in a resolution addressing the
protection of civilians in armed conflicts in general, the Security Council
has also urged all States to respect IHL, without reference to any specific
conflict.1034

4. Multilateral conferences

(a) International Conference of the Red Cross and Red Crescent
The quadrennial International Conference of the Red Cross and Red Crescent
brings together all States party to the 1949 Geneva Conventions and all the
Movement’s components, namely the ICRC, the National Societies and the
International Federation. The International Conference is the supreme delib-
erative body of the Movement. It endeavours to foster unity within the Move-
ment and to debate important humanitarian issues. The resolutions adopted
during the Conference guide its participants in carrying out their humanitar-
ian activities. While the Conference aims to promote respect for IHL and to
contribute to its development, it carefully avoids being drawn into questions
relating to the implementation of IHL in specific contexts, as the participants
are wary of the Conference becoming politicized – and possibly polarized.

(b) Meetings of States Parties
Additional Protocol I provides for the possibility of a meeting of the High
Contracting Parties to “consider general problems concerning the applica-
tion of the Conventions and of the Protocol.”1035 These meetings are to be
convened by Switzerland, as the depositary of the Protocol, at the request
of one or more States party to the Protocol, albeit only on the approval of
the majority of States Parties. The purpose of the meeting is limited to con-
sidering general problems relating to the application of IHL; participating
States can neither investigate specific contexts nor adjudicate or otherwise
pronounce on the merits of allegations involving IHL violations. No such
meeting has been organized since Additional Protocol I came into force.

Instead, in 1998, the Swiss government convened the First Periodical Meeting
of States party to the Geneva Conventions on general problems relating to
the application of IHL, based on the mandate given to the depositary by the
26th International Conference of the Red Cross and Red Crescent (1995). The
meeting was attended by representatives of the 129 States party to the 1949
Geneva Conventions at the time and 36 observer delegations. The discus-
sions centred on two general topics relating to the implementation of IHL,

1033 See, for example, UN Security Council Resolutions 1674 (28 April 2006), 1612
(26 July 2005) and 1502 (26 August 2003). For information on a number of issues and
debates, see http://www.securitycouncilreport.org/thematic-general-issues.php

1034 UN Security Council Resolution 1265 (17 September 1999), para. 4.
1035 AP I, Art. 7.

IMPLEMENTATION AND ENFORCEMENT OF IHL 279

namely: (1) respect for and security of the personnel of humanitarian organ-
izations; (2) armed conflicts linked to the disintegration of State structures.
At the request of States, the debates were informal and no new texts were
negotiated. However, a non-binding report was produced by the chairperson.
Although such periodic meetings do provide a forum for States party to the
Conventions to discuss general issues relating to the implementation of IHL,
no further meetings have been organized to date.
1036

1036 All ICRC documents available at: www.icrc.org

To go further (Ensuring respect internationally)1036

• François Bugnion, “The International Conference of the Red Cross and
Red  Crescent: Challenges, key issues and achievements,” IRRC, Vol. 91, No.
876, December 2009, pp. 675–712.

• Katharine Fortin, “Complementarity between the ICRC and the United
Nations and international humanitarian law and international human rights
law, 1948–1968,” IRRC, Vol. 94, No. 888, December 2012, pp. 1433–1454.

• Toni Pfanner, “Various mechanisms and approaches for implementing inter-
national humanitarian law and protecting and assisting war victims,” IRRC,
Vol. 91, No. 874, June 2009, pp. 279–328.

• Marco Roscini, “The United Nations Security Council and the Enforcement
of International Humanitarian Law,” Israel Law Review, Vol. 43, pp. 330–359.

• ICRC, Commentary on the First Geneva Convention, 2nd ed., ICRC/Cambridge
University Press, 2016, Article 1.

280 CHAPTER 7

How Does Law Protect in War?

• Case No. 57, UN, Guidelines for United Nations Forces

• Document No. 59, UN, Review of Peace Operations

• Document No. 122, ICRC Appeals on the Near East [Part C., paras 10–11]

• Case No. 171, Iran/Iraq, United Nations Security Council Assessing Violations
of International Humanitarian Law

• Case No. 211, ICTY, The Prosecutor v. Tadic, Part. A

• Case No. 234, ICTR, The Prosecutor v. Jean-Paul Akayesu

Textbox 9: Swiss/ICRC initiative on strengthening
compliance with IHL

Since 2011, the ICRC has been involved in a joint initiative with the Swiss government aimed
at strengthening compliance with IHL by establishing more effective international mecha-
nisms. Unlike most other branches of international law, IHL has a limited number of com-
pliance mechanisms, and no specific institutional structure to enable States to meet on a
regular basis to discuss IHL issues.

The mandate for the initiative was provided by a resolution adopted at the 31st International
Conference of the Red Cross and Red Crescent in 2011, which drew on the ICRC’s thinking,
over a long period of time, on the challenges posed by lack of compliance with IHL. The joint
ICRC/Swiss consultation process has primarily involved a series of multilateral meetings of
States, with background documents that contain key questions designed to facilitate debate.
Bilateral discussions have also been held with States and other relevant stakeholders. A wide
range of possible options have been put forward, including periodic reporting, meetings of
States, fact-finding, good offices, early warnings, urgent appeals and thematic discussions. As
the consultation process has progressed, discussions have increasingly focused on particular
functions that the majority of participating States have designated as a priority, including
establishing meetings of States, as the cornerstone of this system. These meetings could
provide a forum for regular dialogue between States on IHL issues and serve as an anchor
for several compliance functions, including periodic national reporting on compliance with
IHL, and regular thematic discussions on IHL issues. However, further work is required to
define the details of these functions.

Establishing a new IHL compliance system involves many complex issues and challenges,
and much work still remains to be done. One of the key challenges is that the system will be a
voluntary one, as States are unwilling to amend the 1949 Geneva Conventions or adopt a new

IMPLEMENTATION AND ENFORCEMENT OF IHL 281

treaty to address the issue. It will therefore be crucial to ensure the regular participation of all
States. The ICRC and Switzerland issued a report of the four-year consultation process and
submitted a draft resolution for consideration at the International Conference in December
2015. No agreement could be reached during the International Conference; however
States decided to continue working towards an inclusive, State-driven intergovernmental
process. Many States also reaffirmed their commitment to respecting IHL, including
through bilateral dialogue with the ICRC, and to enhance its implementation through the
International Conference and regional IHL forums. The ICRC will pursue a strengthened
dialogue with States on their IHL obligations and continue working on the compliance issue.

• For further details, see 31st International Conference of the Red Cross and Red
Crescent, Resolution 1 – Strengthening legal protection for victims of armed conflicts,
2011.

• See also “Strengthening Compliance with International Humanitarian Law
(IHL): The Work of the ICRC and the Swiss Government,” webpage, ICRC.
Available at: https://www.icrc.org/eng/what-we-do/other-activities/develop-
ment-ihl/strengthening-legal-protection-compliance.htm

IV. STATE RESPONSIBILITY AND REPARATIONS

Apart from a few instances, the failure of States to respect IHL entails the
same consequences as any other internationally wrongful act, as regulated
in the 1969 Vienna Convention on the Law of Treaties and the 2001 Draft
Articles on Responsibility of States for Internationally Wrongful Acts, drawn
up by the International Law Commission of the UN General Assembly.1037

1. Responsibility of States for the conduct of their agents
Under international law, States are responsible for the conduct of persons or
entities acting on their behalf or with their authorization or endorsement.
This includes not only government personnel, such as members of the armed
forces and the police or intelligence agencies (de jure State agents),1038 but
also persons empowered by national law to exercise governmental authori-
ty,1039 or persons acting on the instructions or under control of a State, such
as private military or security contractors (de facto State agents).1040 The State

1037 Draft articles on responsibility of States for internationally wrongful acts, with
commentaries, Yearbook of the International Law Commission, 2001, Vol. II, Part Two,
New York and Geneva, 2007, pp. 26–30.

1038 Draft Articles on State Responsibility, op. cit. (note 1037), Art. 4.
1039 Draft Articles on State Responsibility, op. cit. (note 1037), Art. 5.
1040 Draft articles on responsibility of States for internationally wrongful acts, with commen-

taries, Article 8, commentary, paras 1.2, in Yearbook of the International Law Commis-
sion, 2001, Vol. II, Part Two, New York and Geneva, 2007, p. 47; CIHL, Rule 149.

282 CHAPTER 7

remains legally responsible for the actions of its agents, provided they were
acting in their official capacity, even if those agents exceeded their authority
or disobeyed instructions.1041 In international armed conflicts, the respon-
sibility of States extends to “all acts committed by persons forming part of
their armed forces,” including acts committed outside their official capacity
as members of the armed forces.1042 In principle, therefore, all military oper-
ations carried out on behalf of a State may be directly attributed to that State,
regardless of where they take place, where their impact is felt, or whether
they contravene the instructions of the State.

2. Contribution to the unlawful conduct of belligerent parties
A non-belligerent State may be held internationally responsible for assisting
or abetting IHL violations committed by a belligerent State if: (1) the assist-
ing State is aware that the conduct of the assisted State is unlawful, and (2) its
assistance is intended to – and actually does – facilitate that conduct.1043 For
the assisting State to be held internationally responsible, its assistance must
significantly contribute, but need not be indispensable or essential, to the
unlawful conduct of the assisted State.1044 Moreover, while the assisting State
does not necessarily need to be aware of the unlawfulness of the assisted
conduct, it must be aware of the factual circumstances that make it unlawful.
Nevertheless, legal responsibility for providing unlawful support must be
distinguished from direct responsibility for the supported violation of IHL.
Thus, when a belligerent party resorts to means and methods of warfare
contrary to IHL, other States knowingly assisting such operations by pro-
viding financial assistance, intelligence, weapons, personnel, or logistical
support will be legally responsible for providing internationally wrongful
support, but not necessarily for the operations themselves. For example, in
the Nicaragua Case (1986), the ICJ ruled that the duty of States to respect
and ensure respect for the 1949 Geneva Conventions implied “an obligation
not to encourage persons or groups engaged in the conflict in Nicaragua
to act in violation of the provisions of Article 3 common to the four 1949
Geneva Conventions,” and that the United States had violated this obliga-
tion by disseminating a manual on guerrilla warfare that provided opera-
tional guidance contrary to the principles of IHL. The ICJ did not, however,
find any grounds to conclude that any resulting IHL violations committed
by the insurgents were, as such, directly imputable to the United States.1045

1041 Draft Articles on State Responsibility, op. cit. (note 1037), Art. 7.
1042 Hague Regulations, Art. 3; AP I, Art. 91. See also GC I, Art. 51; GC II, Art. 52; GC III,

Art. 131; GC IV, Art. 148.
1043 Draft Articles on State Responsibility, op. cit. (note 1037), Art. 16, Commentary, para. 3.
1044 Draft Articles on State Responsibility, op. cit. (note 1037), Art. 16, Commentary, para. 5.
1045 ICJ, Nicaragua case, op. cit. (note 26), paras 220 and 292.

IMPLEMENTATION AND ENFORCEMENT OF IHL 283

Nevertheless, it cannot be excluded that activities significantly contributing
to serious violations of IHL may entail a State duty to provide reparations,
but also individual criminal responsibility for the personnel involved.1046

3. Reparations
When IHL is violated, the State that is responsible has a legal duty of repar-
ation independent of specific treaty obligations. As the Permanent Court
of International Justice famously stated, “It is a principle of international
law, and even a general conception of law, that any breach of an engagement
involves an obligation to make reparation (…) Reparation is the indispens-
able complement of a failure to apply a convention, and there is no necessity
for this to be stated in the convention itself.” 1047 Today, the duty to make
reparation for violations is an integral part of IHL applicable in all armed
conflicts1048 and, for individuals, an integral part of international criminal
law.1049 Thus, victims of serious violations of IHL should receive reparation
that, depending on the gravity of the violation and the loss or injury caused,
may take various forms, including restitution (i.e. re-establishing the orig-
inal situation), rehabilitation (e.g. in medical, psychological, legal or social
terms), satisfaction (e.g. acknowledgement or apology), and guarantees of
non-repetition.1050 Financial compensation, in particular, should be pro-
vided for economically assessable damage, such as physical, mental, mate-
rial or moral harm, and loss of earnings or earning potential.1051

Because IHL violations frequently result in extensive damage and involve
large numbers of victims, monetary compensation awarded on the basis of
individual judicial proceedings could easily become an excessive procedural
and financial burden, without any realistic prospect of a satisfactory settle-
ment. Moreover, while Article 75 of the Rome Statute recognizes the right of
victims to claim reparation from individual perpetrators, individual claims

1046 Rome Statute, Art. 25(3).
1047 Permanent Court of International Justice, Factory at Chorzów, Jurisdiction, Judgment,

13 September 1928, p. 29. Article 31 of the Draft Articles on State Responsibility (op. cit.,
see note 1037) stipulates that: “the responsible State is under an obligation to make full
reparation for the injury caused by the internationally wrongful act.” See also ICJ, The
Wall Opinion, op. cit. (note 35), paras 152–153; ICJ, DRC v. Uganda, op. cit. (note 80),
para. 259.

1048 Hague Regulations, Art. 3; AP I, Art. 91; Second Protocol to the Hague Convention on
Cultural Property, Art. 38; CIHL, Rule 150.

1049 Rome Statute, Art. 75.
1050 Draft Articles on State Responsibility, op. cit. (note 1037), Arts 30–31 and 34–39.
1051 For more information, see United Nations, United Nations Basic Principles and Guidelines

on the Right to a Remedy and Reparation for Victims of Gross Violations of International
Human Rights Law and Serious Violations of International Humanitarian Law, document
A/RES/60/147, 21 March 2006, in particular paras 15–23. Available at: https://www.ohchr.
org/EN/ProfessionalInterest/Pages/RemedyAndReparation.aspx

284 CHAPTER 7

against belligerent States are often precluded by express provisions in peace
settlements, sovereign immunity or the non-self-executing nature of the
right to reparation under international law. Therefore, victims often have to
submit complaints to their own government, which may then include such
claims as part of a peace treaty or other political settlement with the oppos-
ing party to the conf lict.1052 Reparation may be provided to individ uals
through mechanisms established by the UN Security Council,1053 or
unilaterally by national legislation, executive bodies or courts. Where IHL
violations also violate human rights law, such as in the case of torture or
other cruel or inhuman treatment in detention, victims may pursue indi-
vidual claims through regional or universal human rights mechanisms.1054
In practice, the sensitive issue of reparations is often better handled through
collective political settlements, complemented by more inclusive or compre-
hensive reparation and reconciliation measures, including those provided by
means of transitional justice mechanisms, such as truth and reconciliation
commissions. Historical examples of such collective settlements include the
Potsdam Conference (1945) and the Paris peace treaties (1947), which dealt
with the issue of war reparations to be paid by Germany and the other Axis
Powers to the Soviet Union, and the Reparations Agreement between Israel
and the Federal Republic of Germany (Luxembourg, 1952), which addressed
the Holocaust reparations to be paid by West Germany to Israel.
1055

1052 See, e.g., the Commission for Real Property Claims of Displaced Persons and Refugees
in Bosnia and Herzegovina, established by the Agreement on Refugees and Displaced
Persons annexed to the Dayton Peace Accords of 14 December 1995.

1053 See, e.g., the United Nations Compensation Commission established by UN Secu-
rity Council Resolution 687 (3 April 1991) and UN Security Council Resolution 692
(20 May 1991), for individual claims resulting from the 1990 Iraqi invasion of Kuwait.

1054 See Section VI.2.
1055 All ICRC documents available at: www.icrc.org

To go further (State responsibility and reparations)1055

• Natalino Ronzitti, “Access to justice and compensation for violations of the
law of war,” in Francesco Francioni (ed.), Access to Justice as a Human Right,
Oxford University Press, Oxford, 2007, pp. 95–134.

• “Sanctions,” IRRC, Vol. 90, No. 870, June 2008.

• Emanuela-Chiara Gillard, “Reparation for violations of international
humanitarian law,” IRRC, Vol. 85, No. 851, September 2003, pp. 529–553.

IMPLEMENTATION AND ENFORCEMENT OF IHL 285

V. INDIVIDUAL CRIMINAL RESPONSIBILITY
FOR VIOLATIONS OF IHL

1. Individual criminal responsibility

(a) Scope of criminal and civil responsibility
After World War II, the International Military Tribunals at Nuremberg and
Tokyo prosecuted suspected war criminals based on the assumption that the
principle of individual criminal responsibility for war crimes had become
part of customary international law.1056 Today, the principle of individual
criminal responsibility for war crimes in both international and non-interna-
tional armed conflicts is recognized in numerous IHL treaties,1057 and in the

1056 Charter of the International Military Tribunal, Annex to the Agreement for the prose-
cution and punishment of the major war criminals of the European Axis, 8 August 1945,
Art. 6; Charter of the International Military Tribunal for the Far East, 19 January 1946
and as amended, 26 April 1946, Art. 5.

1057 See, most notably, GC I, Art. 49; GC II, Art. 50; GC III, Art. 129; GC IV, Art. 146; AP I, Art.
85; Hague Convention on Cultural Property, Art. 28; Second Protocol to the Hague Con-
vention on Cultural Property, Arts. 15 and 22; Amended Protocol II to the Convention on
Certain Conventional Weapons, Art. 14; Anti-Personnel Mine Ban Convention, Art. 9; Con-
vention on Cluster Munitions, Art. 9. The Convention on Certain Conventional Weapons,

• Liesbeth Zegveld, “Remedies for victims of violations of international
humanitarian law,” IRRC, Vol. 85, No. 851, September 2003, pp. 497–527.

• Marco Sassòli, “State responsibility for violations of international
humanitarian law,” IRRC, Vol. 84, No. 846, June 2002, pp. 401–434.

• Dieter Fleck, “International accountability for violations of the ius in bello:
The impact of the ICRC Study on customary international humanitarian law,”
Journal of Conflict and Security Law, Vol. 11, No. 2, 2006, pp. 179–199.

• Yaël Ronen, “Avoid or compensate? Liability for incidental injury to civilians
inflicted during armed conflict,” Vanderbilt Journal of Transnational Law, Vol.
42, No. 1, 2009, pp. 181–225.

How does Law Protect in War?

• Case No. 53, International Law Commission, Articles on State Responsibility

• Case No. 153, ICJ, Nicaragua v. United States

• Case No. 164, Sudan, Report of the UN Commission of Inquiry on Darfur,
paras 593–600

• Case No. 180, UN Compensation Commission, Recommendations

• Case No. 222, United States, Kadić et al. v. Karadzić

286 CHAPTER 7

Statutes of the ICTY, the ICTR, the Special Court for Sierra Leone (SCSL) and
the ICC;1058 and its customary nature can no longer be disputed in relation to
any type of armed conflict.1059

In prosecuting individuals for war crimes, difficult questions arise not only
with regard to the objective characteristics and subjective intent of each
crime, but also with regard to criteria relating to attempted crimes, acting
as an accessory to a crime and various defence pleas or justifications. While
IHL provides only limited guidance in this respect, the statutes and prac-
tice of the international courts and tribunals have significantly contributed
to clarifying general questions of international criminal law. Thus, individ-
uals are criminally responsible not only for committing or issuing orders
to commit war crimes, but also for planning, preparing, or attempting to
commit war crimes, and for instigating, assisting, facilitating, or otherwise
aiding or abetting others in the commission of war crimes.1060

Individual responsibility for war crimes is not limited to criminal responsi-
bility, but also includes personal civil liability for any resulting harm. Most
notably, the ICC may “make an order directly against a convicted person
specifying appropriate reparations to, or in respect of, victims, including
restitution, compensation and rehabilitation.”1061 The Statutes of the ICTY
and the ICTR restrict these tribunals to ordering the restitution of “any
property and proceeds acquired by criminal conduct, including by means of
duress, to their rightful owner.”1062 However, claims for compensation may
be filed within the framework of institutions and procedures established
under national law.

(b) Responsibility of superiors and commanders
International criminal law not only penalizes persons who actively
commit war crimes or issue orders to that effect, but also covers crimes
resulting from a failure to act as required by IHL.1063 In particular, military
commanders have an explicit personal duty to intervene in cases of ongoing
or impending violations of IHL committed by persons acting under their

the Anti-Personnel Mine Ban Convention and the Convention on Cluster Munitions do not
per se create international responsibility of individuals for war crimes; instead, they place an
obligation on States to take measures to suppress violations of these conventions.

1058 ICTY Statute, Arts 2 and 3; ICTR Statute, Arts 4 and 5; SCSL Statute, Art. 1; Rome Statute,
Arts 5, 8 and 25.

1059 CIHL, Rule 151.
1060 Rome Statute, Art. 25; ICTY Statute, Art. 7; ICTR Statute, Art. 6; SCSL Statute, Art. 6;

CIHL, Rule 152.
1061 Rome Statute, Art. 75(2).
1062 ICTY Statute, Art. 24(3); ICTR Statute, Art. 23(3).
1063 AP I, Art. 86(1).

IMPLEMENTATION AND ENFORCEMENT OF IHL 287

command and other persons under their control.1064 The same duty is also
implied for su periors other than military commanders, such as political
leaders or representatives of civilian authorities. Thus, Additional Protocol I
provides that an IHL violation committed by a subordinate does not absolve
his or her superiors of penal or disciplinary responsibility, if “they knew,
or had information which should have enabled them to conclude in the
circumstances at the time, that he was committing or was going to commit
such a breach and if they did not take all feasible measures within their
power to prevent or repress the breach.”1065

In the field of international criminal law, the doctrine of command and
superior responsibility was shaped by the international military tribunals
that prosecuted military and political leaders for mass crimes committed
during World War II. Building on the criteria established by these tribunals,
the contemporary doctrine of command and superior responsibility rests on
three cumulative elements, namely: (1) the existence of a de facto superior-
subordinate relationship providing the superior with effective control over
the conduct of the perpetrators; (2) the superior’s knowledge, or his or her
culpable lack thereof, that a crime has been, or is about to be, committed;
and (3) the superior’s failure to prevent, put an end to, or punish the crime.

In line with these elements, the Rome Statute provides that military com-
manders and other superiors are criminally responsible for war crimes com-
mitted by persons under their effective control if they have failed to take all
necessary and reasonable measures within their power to prevent or repress
such crimes or to submit the matter to the competent authorities for investi-
gation and prosecution. In the case of military commanders, such criminal
responsibility arises only if they “knew or, owing to the circumstances at the
time, should have known” that their forces were committing or were about
to commit war crimes and, in the case of other superiors, only if they “knew
or consciously disregarded information clearly indicating” that their subor-
dinates were committing or about to commit war crimes, and if these crimes
concerned activities within their effective responsibility and control.1066

(c) Superior orders
During the war crimes trials that took place after World War II, many
defendants invoked superior orders as a defence, claiming that they could
not be held accountable for the crimes committed. The case-law of these
trials eventually resulted in the development of a customary rule applica-
ble in all armed conflicts, whereby obeying a superior order does not relieve

1064 AP I, Art. 87(1).
1065 AP I, Art. 86(2); CIHL, Rule 153.
1066 Rome Statute, Art. 28.

288 CHAPTER 7

a subordinate of criminal responsibility, if the subordinate knew that the act
ordered was unlawful, or if he should have known so because of its mani-
festly unlawful nature.1067 Where an order is manifestly unlawful, all com-
batants have a customary duty to disobey.1068 In codifying this customary
rule, the Rome Statute provides that persons who have committed a crime
under the orders of a government or superior, whether military or civilian,
shall not be relieved of their criminal responsibility unless: (a) they were
under a legal obligation to obey; (b) they did not know that the order was
unlawful; and (c) the order was not manifestly unlawful, such as would be
the case, for example, for any order to commit genocide or crimes against
humanity.1069 Conceivably, superior orders may also become a valid defence
plea for perpetrators in cases where disobedience is likely to entail indivi dual
or collective punishment involving summary execution or serious bodily
harm.1070 Finally, situations involving superior orders that do not relieve
the perpetrator of criminal responsibility may still be taken into account in
determining the gravity of his or her personal culpability, and the severity
of the sanction to be imposed.

(d) Irrelevance of combatant’s privilege
The combatant’s privilege afforded by IHL to members of the armed forces
of a party to an international armed conflict cannot serve as a defence plea
in a war crimes trial. While the combatants’ “right to participate directly in
hostilities” entails immunity from prosecution for lawful acts of war that
would otherwise constitute offences under the national law of the capturing
State, they enjoy no such immunity for violations of IHL that are punishable
under national or international criminal law.1071

(e) Irrelevance of official capacity
Any privileges or immunities attached to the official capacity of a head of State
or government, a member of a government or parliament, an elected represen-
tative or a government official, cannot exempt such persons from international
criminal responsibility, or provide grounds for reducing their sentence.1072

(f ) Mistake of fact or mistake of law
Mistakes of fact or law may provide grounds for excluding criminal respon-
sibility only if they negate the subjective intent (mens rea) required to

1067 CIHL, Rule 155.
1068 CIHL, Rule 154.
1069 Rome Statute, Art. 33.
1070 Rome Statute, Art. 31(1)(d).
1071 On the obligation of the detaining State to take repressive measures, see GC III,

Art. 129(2) and (3).
1072 Rome Statute, Art. 27.

IMPLEMENTATION AND ENFORCEMENT OF IHL 289

commit the crime.1073 In other words, it is not the perpetrator’s subjective
knowledge of the unlawfulness of an act that is decisive, but his awareness
of the facts that make that act unlawful. For example, soldiers disguising
themselves as civilians in order to carry out a lethal surprise attack against
an insurgent commander cannot claim a mistake of law because they erro-
neously believed that the treacherous killing of an enemy constitutes a war
crime only in international armed conflict.1074 Conversely, a sniper targeting
a uniformed enemy cannot be held criminally responsible for the war crime
of attacking civilians simply because the targeted person subsequently turns
out to be a civilian wearing a military uniform.

(g) Self-defence
Exceptionally, criminal responsibility for war crimes is excluded in situ-
ations of self-defence, namely where persons take reasonable action to
defend themselves, others, or property essential to their survival or to the
success of a military mission, against an imminent and unlawful use of
force and in a manner proportionate to the danger. Conducting a defensive
military operation cannot, in itself, justify a plea of self-defence or exclude
criminal responsibility.1075

2. War crimes
Serious violations of IHL are considered war crimes punishable under inter-
national criminal law.1076 This essentially includes any violations described as
“grave breaches” of the 1949 Geneva Conventions and Additional Protocol I,
and other serious violations of IHL recognized as war crimes in the Rome
Statute1077 or in customary law.1078 In substantive terms, the extensive lists of
war crimes provided by the 1949 Geneva Conventions, Additional Protocol I
and the Rome Statute essentially comprise violations of the core protection
afforded either to persons and objects in the power of the enemy or to persons
and objects protected against attack in the conduct of hostilities.

For persons and objects in the power of a belligerent party, this includes
crimes such as murder, torture and other forms of inhuman treatment,
including sexual violence, pillage and wanton destruction, hostage-taking,
unlawful imprisonment and the denial of a fair trial, as well as forced recruit-
ment into hostile armed forces, child recruitment and unlawful deportations

1073 Rome Statute, Art. 32.
1074 Rome Statute, Art. 8(2)(e)(ix).
1075 Rome Statute, Art. 31(1)(c).
1076 CIHL, Rule 156.
1077 See GC I, Art. 50; GC II, Art. 51; GC III, Art. 130; GC IV, Art. 147; AP I, Art. 85; Rome

Statute, Art. 8(2)(a) and (b).
1078 For the definition of war crimes in customary IHL, see CIHL, Rule 156.

290 CHAPTER 7

and transfers. During the conduct of hostilities, this includes, most notably,
the deliberate violation of the principles of distinction and of proportionality,
and of the prohibitions against perfidy and denial of quarter, and the use of
certain prohibited weapons.1079 For each war crime, a number of objective
(factual, or actus reus) and subjective (mental, or mens rea) criteria must be
met for the deed to be punishable under international law. For crimes listed
in the Rome Statute, these elements have been authoritatively identified in
the Elements of Crimes adopted by the States party to the Statute.1080

The international criminalization of serious violations of IHL does not
ne cessarily require a legal basis in treaty law, but can also arise as a matter
of international custom. This was demonstrated by the Nuremberg trials
in 1945–1946 with regard to international armed conflict, and by the case-
law of the ICTY and the ICTR in connection with non-international armed
conflict. International crimes include not only war crimes, but also crimes
against humanity, genocide and, the crime of aggression.1081 These inter-
national crimes should not be confused with acts that States party to certain
treaties are obliged to criminalize under their domestic legislation, but which
are not covered by international criminal law. For example, the Convention
against Torture does not criminalize torture as a matter of international
law, but obliges States Parties to criminalize torture (including attempted
torture, complicity and participation) under national law.1082 Hence, torture
committed for reasons related to an armed conflict constitutes a war crime,
and torture committed as part of a widespread or systematic attack directed
against any civilian population amounts to a crime against humanity1083
or, in certain circumstances, to genocide.1084 Torture committed in other
situ ations still constitutes a grave violation of human rights law, and must
be prosecuted by States under national legislation. However, it cannot be
adjudicated by the ICC as an international crime.

3. Duty of States to investigate and prosecute or extradite
As a matter of treaty IHL, States party to the 1949 Geneva Conventions
and Additional Protocol  I are required to search for persons alleged to

1079 AP I, Art. 85(3) and (4).
1080 Rome Statute, Art. 9; Elements of Crimes, Official Records of the Assembly of States

Parties to the Rome Statute of the International Criminal Court, First session, New York,
3–10 September 2002, part II. B. For the Elements of Crimes adopted at the 2010 Review
Conference, see Official Records of the Review Conference of the Rome Statute of the Inter-
national Criminal Court, Kampala, 31 May–11 June 2010.

1081 Rome Statute, Arts 6, 7 and 8 bis.
1082 Convention against Torture, Art. 4(1).
1083 Rome Statute, Art. 7(1)(f ).
1084 Rome Statute, Art. 6(b).

IMPLEMENTATION AND ENFORCEMENT OF IHL 291

have committed, or to have ordered to be committed, crimes categorized
as “grave breaches” of these treaties, and to bring such persons, regardless
of their nationality, before their own courts. Alternatively, and always in
accordance with the relevant principles of national and international law,
States may extradite such suspects for trial to another State, provided that
State has made out a prima facie case.1085 States must also take the “measures
necessary” for the suppression of all other violations of the Conventions and
of Additional Protocol  I,1086 including those resulting from a failure to act
when under a duty to do so.1087 The use of the expression “shall take meas-
ures necessary for the suppression of all acts contrary to the provisions of
the Convention” implies that States may take a wide range of measures to
ensure that violations of the Conventions are stopped and that measures
are taken to prevent their recurrence.1088 In practice, this requires States to
ensure that even violations of IHL not classed as war crimes can and will be
prosecuted under national law, thus emphasizing the importance of domes-
tic courts to the national implementation of IHL.

Moreover, as a matter of customary international law, States have the right to
establish, for their national courts, universal jurisdiction over all war crimes,
including those not categorized as “grave breaches” of the 1949 Geneva
Conventions and Additional Protocol I.1089 States have a duty to investigate
all war crimes over which they have established jurisdiction – at least all
crimes allegedly committed by their nationals or armed forces, or on their
territory – and, if appropriate, to initiate prosecutions.1090 In no case may
national statutes of limitation apply to war crimes.1091 It goes without saying
that persons accused of war crimes or crimes against humanity must benefit
from the same fundamental guarantees as any other person deprived of his
or her liberty, and should be prosecuted in accordance with the applicable
rules of national and international law.1092 States must, subject to other rele-
vant treaties concerning international cooperation in criminal proceedings,
provide each other with the greatest possible assistance and, where required,
cooperate with the UN to facilitate the investigation and prosecution of war
crimes, including grave breaches.1093 Finally, in addition to the 1949 Geneva

1085 GC I, Art. 49(2); GC II, Art. 50(2); GC III, Art. 129(2); GC IV, Art. 146(2).
1086 GC I, Art. 49(3); GC II, Art. 50(3); GC III, Art. 129(3); GC IV, Art. 146(3); AP I, Art. 85.
1087 GC I, Art. 49(3); GC II, Art. 50(3); GC III, Art. 129(3); GC IV, Art. 146(3); AP I, Arts 85

and 86(1).
1088 ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016, op. cit. (note 63), Art. 49.
1089 CIHL, Rule 157.
1090 CIHL, Rule 158.
1091 Rome Statute, Art. 29; CIHL, Rule 160.
1092 AP I, Art. 75(7).
1093 AP I, Arts 88(1) and (3), and 89; CIHL, Rule 161.

292 CHAPTER 7

Conventions and Additional Protocol I, a number of other treaties that may
apply in armed conflicts require States Parties to establish universal juris-
diction over certain crimes.1094 1095

1094 See, in particular, Convention against Torture, Art. 5; Convention on the Safety of
United Nations and Associated Personnel, 9 December 1994, Art. 10; Inter-American
Convention on Forced Disappearance of Persons, 9 June 1994, Art. 4; Second Protocol
to the Hague Convention on Cultural Property, Art. 16(1).

1095 All ICRC documents available at: www.icrc.org

To go further (Individual criminal responsibility for violations of IHL)1095

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Pro-
tect in War?, ICRC, Geneva, 2011, Vol. I, Chapter 13: Criminal repression,
pp. 395–426.

• Knut Dörmann, Elements of War Crimes under the Statute of the International
Criminal Court, Cambridge University Press, Cambridge, 2002.

• Héctor Olasolo, The Criminal Responsibility of Senior Political and Military
Leaders as Principals to International Crimes, Hart Publishers, Oxford, 2009,
354 pp.

• Jamie Allan Williamson, “Some considerations on command responsibility
and criminal liability,” IRRC, Vol. 90, No. 870, June 2008, pp. 303–317.

• Marko Divac Öberg, “The absorption of grave breaches into war crimes law,”
IRRC, Vol. 91, No. 873, March 2009, pp. 163–183.

• Paola Gaeta, “The defense of superior order: The Statute of the International
Criminal Court versus customary international law,” European Journal of
International Law, Vol. 10, 1999, pp. 172–191.

• ICRC, Preventing and Repressing International Crimes: Towards an
“Integrated” Approach Based in Domestic Practice, Vol. I, ICRC, Geneva,
2014, 108 pp.

IMPLEMENTATION AND ENFORCEMENT OF IHL 293

VI. JUDICIAL ENFORCEMENT

Whenever possible, violations of IHL should be prosecuted and adjudicated
through national institutions and procedures, with international mech-
anisms generally playing a subsidiary and complementary role, activated
only in cases where national accountability mechanisms fail to function
effectively. In certain States affected by conflict, such as Israel, Colombia or
the United States, national courts have played an important role in interpret-
ing and implementing IHL, whereas in other States, the enforcement of IHL
through national courts has proved more difficult. At the international level,
several judicial bodies are capable of adjudicating cases involving violations
of IHL, each from a different perspective.

1. International Court of Justice
The ICJ, as the principal UN judicial body, contributes to the implementa-
tion and enforcement of IHL through its decisions on contentious cases and
its advisory opinions. Disputes between States involving alleged violations of
IHL may be examined by the ICJ, if the States involved have agreed to submit
to its jurisdiction, whether on an ad hoc basis for a specific case, or through
an optional declaration accepting its jurisdiction for future cases.1096 Impor-
tant, contentious cases involving violations of IHL adjudicated by the ICJ have
included the Nicaragua Case (1986)1097 and the Congo Case (2005).1098 More-
over, on the request of the UN General Assembly, the Security Council and
other authorized UN bodies and agencies, the ICJ may issue advisory opinions

1096 ICJ Statute, Art. 36(2).
1097 ICJ, Nicaragua case, op. cit. (note 26).
1098 ICJ, DRC v. Uganda, op. cit. (note 80).

How Does Law Protect in War?

• Case No. 68, Belgium, Law on Universal Jurisdiction

• Document No. 96, United States Military Tribunal at Nuremberg, United
States v. Wilhelm List

• Case No. 102, United States, In re Yamashita

• Case No. 117, United States, United States v. William L. Calley, Jr.

• Case No. 211, ICTY, The Prosecutor v. Tadic (Part A, paras 79–84)

• Case No. 233, Luxembourg, Law on Cooperation with the International
Criminal Courts

294 CHAPTER 7

on the legality under IHL of certain aspects of the conduct of States.1099 Thus,
the ICJ has issued advisory opinions on the “legality of the threat or use of
nuclear weapons” (1996)1100 and on the “legal consequences of the construc-
tion of a wall in the occupied Palestinian territory” (2004).1101 When exam-
ining a case or issuing an opinion on a matter linked to an armed conflict,
the ICJ quite naturally applies IHL because, unlike many other international
judicial bodies, it is not bound to apply only one particular treaty, but is free
to refer to all applicable international law, whatever its source, as long as it is
relevant to the dispute and binding on all the parties involved.1102

2. International human rights bodies
Depending on the type of IHL violation concerned, individual victims may
bring individual complaints, including reparation claims, before the judicial
and quasi-judicial implementing bodies of universal and regional human
rights treaties. From an enforcement perspective, it is important to remem-
ber that the lex specialis character of IHL does not suspend the applicability
of human rights law, but merely determines its interpretation during armed
conflicts.1103 Consequently, violations of IHL that also violate human rights
law may be pursued through the individual complaints procedures provided
under the relevant human rights treaties. For example, the ECHR has adju-
dicated several human rights cases concerning not only occupied territories,
but also combat operations, including attacks by military aircraft in non-in-
ternational armed conflicts.1104 In many cases, however, the question of juris-
diction is likely to be problematic, particularly in the case of extraterritorial
aerial operations involving no territorial control.1105 Thus, the various judicial
institutions complement rather than compete with each other. Moreover, the
Inter-American Commission on Human Rights (IACHR) has not hesitated
to refer to IHL where necessary for the application and interpretation of the
American Convention on Human Rights in situations of armed conflict.1106

1099 UN Charter, Art. 96.
1100 ICJ, Legality of the Threat or Use of Nuclear Weapons, op. cit. (note 37).
1101 ICJ, The Wall Opinion, op. cit. (note 35).
1102 ICJ Statute, Article 38(1).
1103 On the lex specialis principle, see Chapter 1.III.2.
1104 ECHR, Cyprus v. Turkey, Merits, App. No. 25781/94, 10 May 2001; ECHR, Al-Skeini and

others v. UK, App. No. 55721/07, 7 July 2011; ECHR, Isayeva, Yusopova and Bazayeva v.
Russia, App. No. 57947/00, 57948/00 and 57949/00, 24 February 2005; ECHR, Issa et al.
v. Turkey, App. No. 31821/96, 16 November 2004.

1105 ECHR, Bankovic and others v. Belgium and 16 other Contracting States, App. No.
52207/99, 12 December 2001.

1106 See, e.g., IACHR, Caracoles Community, No. 30/82, 8 March 1982, para. 5 of the Pre-
amble in conjunction with para. 2 of the operative part; IACHR, La Tablada case, op.
cit. (note 36), paras 158 and 195; IACHR, Report on the Massacre of the Jesuits in El Sal-
vador, Report No. 136/99, Ignacio Ellacuría et al. v. El Salvador, Case 10. 488, para. 237,
22  December 1999.

IMPLEMENTATION AND ENFORCEMENT OF IHL 295

While the continued applicability of human rights law during armed conflicts
can hardly be disputed as a matter of law,1107 the growing trend to examine
the conduct of belligerent parties through human rights mechanisms is
not entirely unproblematic, not least because the human rights obligations
under the purview of these mechanisms are binding only on States. Most
contemporary armed conflicts, however, are non-international, and by
definition involve at least one non-State party. Examining armed conflicts
through human rights mechanisms means that only the conduct of the States
involved can be adjudicated, whereas any violations of IHL committed by
non-State armed groups will avoid such scrutiny and must be dealt with
in different fora. This lack of equality certainly does nothing to overcome
the traditional reluctance of States to accept any mandatory form of judicial
supervision of their military operations in armed conflicts. It must also be
emphasized that IHL is not just the “human rights law of armed conflicts,”
as it protects not only human beings, but also civilian and cultural property,
the environment and, to a certain extent, the continuity of the political order
of States. Thus, many forms of conduct that constitute flagrant violations
of IHL do not fall within the purview of human rights mechanisms, and
therefore cannot be adjudicated by them.

Overall, the increasing involvement of judicial and quasi-judicial human
rights mechanisms in examining and adjudicating human rights abuses
committed by belligerent States certainly has, in spite of various obstacles
and limitations, significantly contributed to renewing the international
community’s interest in IHL, and to the improved implementation and en-
forcement of this body of law in contemporary situations of armed conflict.

3. International criminal courts and tribunals
The case-law of international criminal courts and tribunals has played a deci-
sive role in shaping the contemporary interpretation and application of IHL.
From the International Military Tribunals at Nuremberg and Tokyo after
World War II to the ad hoc Tribunals for the former Yugoslavia and Rwanda,
the international prosecution and adjudication of suspected war criminals
has required the development of an extremely broad range of detailed, yet
practice-oriented and realistic criteria for determining the margins of lawful
conduct in armed conflict.

In 1998, these developments culminated in the establishment of the ICC.1108
The Court is currently the only permanent international judicial body

1107 On IHL and human rights law, see Chapter 1.III.2.
1108 The Rome Statute was adopted on 17 July 1998 and entered into force on 1 July 2002, after

60 States had become party thereto. As of 1 November 2014, 122 States were party to the
Rome Statute.

296 CHAPTER 7

specifically mandated to prosecute violations of IHL. Within the scope of its
jurisdiction, the Court examines allegations of war crimes, crimes against
humanity, genocide and, from 2017, the crime of aggression. The Court may
exercise its jurisdiction in three situations: if the accused is a national of a
State party to the Rome Statute; if the alleged crime took place on the terri-
tory of a State Party (including registered vessels or aircraft); or if a case is
referred to the Court by the UN Security Council.1109 Moreover, the Court’s
jurisdiction is subsidiary to that of national courts, and may be exercised
only when national courts are unwilling or unable to assume their primary
responsibility to investigate or prosecute.1110 In order to ensure the primacy
of their national jurisdiction, many States party to the Rome Statute have
introduced domestic legislation that gives national courts jurisdiction over
the crimes listed in the Statute.

A number of ad hoc tribunals and special courts have also been established
to examine allegations of international crimes in specific contexts. In addi-
tion to the International Criminal Tribunals for the former Yugoslavia (1993)
and Rwanda (1994), established by the UN Security Council, these institu-
tions include the Special Court for Sierra Leone (2002) and the Extraordinary
Chambers in the Courts of Cambodia (2003), both of which were established
by treaties signed between the UN and the relevant governments as “hybrid”
institutions, prosecuting serious crimes, under both international and domes-
tic law, allegedly committed during the conflict in Sierra Leone and Pol Pot’s
regime in Cambodia. Additionally, special panels or chambers within existing
national tribunals have also been created pursuant to national legislation, such
as the War Crimes Chamber in Bosnia and Herzegovina (2002) and the
Special Panels for Serious Crimes in Timor-Leste (2000).

In spite of the ICC’s comprehensive mandate and jurisdiction, its practical
impact remains limited by the fact that several major military powers, including
the United States, the Russian Federation and China, have yet to become
party to the Rome Statute. The Court faces a number of challenges, including
accusations of bias for prosecuting only leaders from less influential African
States, while ignoring crimes committed by representatives of richer and
more powerful States. Moreover, both the ad hoc tribunals and the ICC face
challenges relating to budgets, the speed of their work and geographic distance
from the contexts under examination. These problems highlight the limitations
of international criminal prosecution as a mechanism for the comprehensive
adjudication of violations of IHL. The fact of the matter is that relations between
States continue to be based on the concept of national sovereignty and on an

1109 Rome Statute, Arts 12 and 13.
1110 Rome Statute, Arts 17 and 20.

IMPLEMENTATION AND ENFORCEMENT OF IHL 297

uneven distribution of political and military power. Moreover, the widespread
violence, destruction and destabilization that accompany most armed conflicts
make it difficult to conduct the independent and reliable investigations required
for criminal trials. Furthermore, in terms of quantitative capacity, international
judicial bodies will always be limited to adjudicating a small number of major
cases, whereas the vast majority of allegations will have to be dealt with by local
courts, or through extrajudicial mechanisms that aim to provide justice and
reconciliation.

This being said, the successful prosecution of war criminals by international
courts and tribunals has served as a powerful deterrent, and strengthened
respect for and compliance with IHL.1111

1111 All ICRC documents available at: www.icrc.org

To go further (Judicial enforcement)1111

• Yusuf Aksar, Implementing International Humanitarian Law: From the
Ad-Hoc Tribunals to a Permanent International Criminal Court, Routledge,
London/New York, 2004, 314 pp.

• Cordula Droege, “Elective affinities? Human rights and humanitarian law,”
IRRC, Vol. 90, No. 871, September 2008, pp. 501–548.

• Vincent Chetail, “The contribution of the International Court of Justice to
international humanitarian law,” IRRC, Vol. 85, No. 850, June 2003, pp. 235–269.

• “International criminal tribunals,” IRRC, Vol. 88, No. 861, March 2006.

How does Law Protect in War?

• Case No. 23, The International Criminal Court

• Case No. 62, ICJ, Nuclear Weapons Advisory Opinion

• Case No. 165, Sudan, Arrest Warrant for Omar Al-Bashir

• Case No. 192, Inter–American Commission on Human Right, Tablada

• Case No. 230, UN, Statute of the ICTR

• Case No. 236, ICJ, Democratic Republic of the Congo/Uganda, Armed Activ-
ities on the Territory of the Congo

• Case No. 282, ECHR, Isayeva v. Russia

298 CHAPTER 7

VII. NON-JUDICIAL ENFORCEMENT

As shown above, international judicial mechanisms face a number of
challenges. Consequently, enforcement of IHL is still largely dependent
on more traditional, alternative monitoring, complaint and implementa-
tion mechanisms. In practice, when one belligerent State violates IHL, the
injured State is likely to first issue a formal protest and call for an end to the
unlawful conduct. Of course, the injured State may also demand that other
States cease or abstain from assisting the incriminated State in its unlawful
conduct. Secondly, the injured State may request one or several other States
to exert their influence on the incriminated State, or to provide their good
offices, for example by agreeing to serve as a Protecting Power. With the
agreement of the incriminated State, it may also initiate an official concil-
iation or enquiry procedure, or activate the International Humanitarian
Fact-Finding Commission. In the worst case scenario, the injured State may
resort to limited self-help measures, most notably in the form of belligerent
reprisals. Finally, the ICRC and other humanitarian organizations have a
right of humanitarian initiative to assist victims of armed conflicts.

1. Protecting Powers and their substitutes
At the outset of any international armed conflict, belligerent States are
obliged to designate Protecting Powers, and to apply the 1949 Geneva Con-
ventions “with the cooperation and under the scrutiny of the Protecting
Powers whose duty it is to safeguard the interests of the Parties to the con-
flict.”1112 The diplomatic institution of the Protecting Powers is not exclusive
to situations of armed conflict, but has developed over centuries to enable
a State, through its good offices and in a wide variety of situations, to safe-
guard the interests of another State vis-à-vis a third State. In international
armed conflicts, Protecting Powers are neutral or otherwise non-belligerent
States that are mandated by one belligerent State, with the consent of an
enemy State, to protect its interests and those of its nationals vis-à-vis that
enemy State.1113 The Parties may also agree to entrust the duties of a Protect-
ing Power to “an organization which offers all guarantees of impartiality
and efficacy.”1114 Given that normal diplomatic relations between warring
States tend to break down for the duration of the armed conflict, Protecting
Powers have the task of maintaining diplomatic communication channels
between the adversaries. Protecting Powers are also entitled to monitor the

1112 GC I–III, Arts 8–10; GC IV, Arts 9–11; AP I, Art. 5.
1113 AP I, Art. 2(c).
1114 GC I–III, Art. 10; GC IV, Art. 11.

IMPLEMENTATION AND ENFORCEMENT OF IHL 299

compliance of belligerent States with IHL, and to provide protection and
humanitarian relief to both military and civilian victims.1115

During World War II, neutral States such as Switzerland and Sweden
assumed numerous mandates to serve as Protecting Powers for Allied
States and for States belonging to the Axis. However, during the Cold War,
the increasingly polarized political landscape and the predominance of
non-international proxy wars prevented frequent recourse to the services
of Protecting Powers. In practice, therefore, many of the wide-ranging
functions assigned to the Protecting Powers in armed conflicts were grad-
ually taken over by the ICRC, acting on the basis of its recognized right of
humanitarian initiative. Even the specifically diplomatic functions of the
Protecting Powers not assumed by the ICRC have become less vital today,
given that alternative fora exist to ensure adequate communication between
belligerent States, most notably within the framework of the UN and regional
organizations. Overall, therefore, although the system of Protecting Powers
continues to exist in other contexts, it is rarely used in situations of armed
conflict, and is unlikely to experience a significant revival in the future as an
IHL implementation mechanism.1116

2. Conciliation procedure
Whilst it is not, strictly speaking, an enforcement mechanism, the “concili-
ation procedure” aims to resolve disagreements between belligerents
regarding the interpretation and application of the 1949 Geneva Conven-
tions. The procedure may be initiated by the Protecting Powers themselves,
“where they deem it advisable in the interest of protected persons, particu-
larly in cases of disagreement between the Parties to the conflict as to the
application or interpretation of the provisions” of the Conventions.1117 For
this purpose, any Protecting Power may propose and facilitate a meeting
between representatives of the belligerent parties, with a view to resolving
the disagreement in question. While the conciliation procedure already
existed under the 1929 Geneva Conventions, the right of initiative and
humanitarian role of the Protecting Powers were strengthened in the 1949

1115 See, for example, the right of prisoners of war and civilians to make direct applications to
the Protecting Powers (GC III, Art. 78(1); GC IV, Art. 30).

1116 For example, at one point, Switzerland held six mandates as a Protecting Power, none
of which involved a situation of armed conflict (United States-Cuba/Cuba-United
States; Russian Federation-Georgia/Georgia-Russian Federation; United States-Islamic
Republic of Iran; Islamic Republic of Iran-Egypt). See https://www.eda.admin.ch/eda/
en/home/foreign-policy/human-rights/peace/switzerland-s-good-offices/protective-
power-mandates.html These examples are based on the Vienna Convention on
Diplomatic Relations, 18 April 1961, and are not per se examples of Protecting Powers
under the 1949 Geneva Conventions.

1117 GC I–III, Art. 11; GC IV, Art. 12.

300 CHAPTER 7

Geneva Conventions, particularly by an explicit reference to the interests
not only of the belligerent parties, but of the protected persons themselves.
In practice, however, the conciliation procedure has never been invoked and
has now been largely replaced by the emergence of alternative fora to facili-
tate dialogue between belligerent States, particularly within the framework
of the UN and regional organizations. 1118

3. Enquiry procedure
Although national authorities bear primary responsibility for investigating
alleged IHL violations, they often lack either the will or the capacity to take the
required action, or their findings are unlikely to be accepted by their adversary
or the international community. The 1949 Geneva Conventions therefore
propose that, at the request of a belligerent State, an “enquiry procedure”
should be launched to investigate alleged violations of IHL.1119 If the enquiry
concludes that a violation of the Conventions has occurred, the parties are
obliged to put an end to that violation and to punish the perpetrators with the
least possible delay. The main problem is that the Conventions fail to provide
even a basic outline of this mechanism, leaving it to the belligerent parties to
set out the procedural details once hostilities have broken out and all peaceful
means of settling their disputes have manifestly failed. It is not surprising,
therefore, that the enquiry procedure has never been invoked in practice.1120
The alternative solution proposed in the Conventions, namely to appoint an
umpire to decide on the procedure to be followed, also requires consensus
and is therefore unlikely to succeed once an armed conflict is under way.

4. International Humanitarian Fact-Finding Commission
Given that the enquiry procedure had never been implemented since its
inception in 1929, the provisions of Additional Protocol  I aimed to take
this idea one step further by establishing an International Humanitarian
Fact-Finding Commission on a permanent basis.1121 Thus, States may
declare at any time, and for any future armed conflict, that they recognize
the competence of the Commission to investigate alleged IHL violations
ipso facto – i.e. without special agreement – in relation to any other State
accepting the same obligation. In making such a declaration, States
recognize the Commission’s competence to: (i) enquire into any facts
alleged to be a grave breach or other serious violation of the Conventions or
Additional Protocol I; (ii) through its good offices, facilitate the restoration

1118 See ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016, op. cit. (note 63),
Art. 11.

1119 GC I, Art. 52; GC II, Art. 53; GC III, Art. 132; GC IV, Art. 149.
1120 See ICRC, Commentary on the First Geneva Convention, 2nd ed., 2016, op. cit. (note 63),

Art. 52.
1121 AP I, Art. 90.

IMPLEMENTATION AND ENFORCEMENT OF IHL 301

of an attitude of respect for IHL. However, in the absence of this prior
declaration, the Commission may conduct an enquiry only at the request
of one belligerent party and with the consent of the other. While the
Commission’s mandate is limited to international armed conflicts, it has
unilaterally declared that, if requested to do so by all belligerents involved,
it would be prepared to assume the same tasks in non-international armed
conflicts.1122 The Commission’s competence is limited to fact-finding; it
may not draw any conclusions relating to the international lawfulness of
established facts, or make its findings public without the consent of all
belligerents concerned. Of course, once the facts of a case are established,
determining the legal consequences relating to those facts is often
relatively straightforward. This may be one of the reasons why, to date,
no belligerent party has ever agreed to rely on the Commission’s services.
Despite their reluctance to use the Commission, States have on various
occasions emphasized its potential to improve respect for IHL in ongoing
armed conflicts. Most notably, a significant number of States participating
in informal meetings convened by the ICRC and Switzerland, from 2012
to 2014, have reiterated their interest in examining how the Commission
could be incorporated in a future IHL compliance system.1123

5. Belligerent reprisals
Throughout the history of international law, reprisals have constituted one
of the most effective tools for States to ensure that other States respect their
international obligations. Reprisals are a coercive self-help measure whereby

1122 See Report of the International Fact-Finding Commission 1991–1996, p. 2 and Report
on the Work of the IHFFC on the Occasion of its 20th Anniversary, Bern, 2011, pp. 15,
17, 19 and 28. Available at: https://www.ihffc.org/index.asp?Language=EN&page=pub-
lic_reports&listfilter=off

1123 All ICRC documents available at: www.icrc.org

To go further (Non-judicial enforcement)1123

• Swiss Federal Department of Foreign Affairs, Third Meeting of States on
Strengthening Compliance with International Humanitarian Law, Geneva,
30 June–1 July 2014, Chairs’ Conclusions, p. 5. Available at: https://www.icrc.org/
en/doc/assets/files/2014/chairs-conclusions-third-meeting-of-states-06-2014.pdf

How does Law Protect in War?

• Document No. 33, The International Humanitarian Fact-Finding Commission

• Document No. 86, Switzerland Acting as Protecting Power in World War II

• Case No. 95, United States Military Tribunal at Nuremberg, The Ministries Case

302 CHAPTER 7

a State aims to compel another State to cease violating international law
through acts that would otherwise be contrary to international law. In IHL,
reprisals are permissible only in exceptional circumstances and on strict
conditions. This singularity of IHL is rooted in the fact that the main bene-
ficiaries of IHL are not the belligerent States themselves, but the potential
victims of any armed conflict between these States.

Thus, treaty IHL prohibits belligerent reprisals not only against civilians,1124
during the conduct of hostilities but also against persons in the power of
a party to a conflict, including the wounded, the sick, the shipwrecked,
medical and religious personnel, captured combatants, civilians in occupied
territory and other categories of civilian in the power of a belligerent
party.1125 Moreover, treaty IHL prohibits reprisals against the property of
civilians in the power of an adversary, medical objects, cultural property,
objects indispensable to the survival of the civilian population, the natural
environment, and works and installations containing dangerous forces in
particular, as well as civilian objects in general.1126

While treaty law does not currently explicitly prohibit belligerent reprisals as a
means of enforcing compliance with prohibitions and restrictions on the use of
certain weapons, recent State practice reflects a trend towards outlawing bellig-
erent reprisals altogether.1127

Where not prohibited by IHL, belligerent reprisals are subject to the follow-
ing strict conditions under general international law:1128

• Purpose: Reprisals may be taken only in response to a serious
violation of IHL, and only to induce an adversary to comply with
the law. This excludes the permissibility of “anticipatory” reprisals,
“counter-reprisals,” reprisals in reaction to a violation of another type
of law, and reprisals for the purpose of revenge or punishment.1129

1124 AP I, Art. 51(6); Protocol  II to the Convention on Certain Conventional Weapons,
Art. 3(2); Amended Protocol  II to the Convention on Certain Conventional Weapons,
Art. 3(7).

1125 GC I, Art. 46; GC II, Art. 47; GC III, Art. 13(3); GC IV, Art. 33(1); CIHL, Rule 146.
1126 GC I, Art. 46; GC II, Art. 47; GC IV, Art. 33; AP I, Arts 52–56; Hague Convention on

Cultural Property, Art. 4(4). See also CIHL, Rule 147.
1127 CIHL, commentary on Rule 145.
1128 CIHL, Rule 145.
1129 Draft Articles, op. cit. (note 1037), Art. 49.

IMPLEMENTATION AND ENFORCEMENT OF IHL 303

• Measure of last resort (necessity): Before resorting to belligerent
reprisals, protests, negotiations or other lawful measures must be
used to try to induce an adversary to cease to violate IHL. Re-
prisals may serve only as a measure of last resort, after warnings
have gone unheeded.

• Proportionality: Reprisals must be proportionate to the original
IHL violation to which they respond.

• Decision at the highest level of government (authority): The deci-
sion to resort to reprisals must be taken at the highest level of govern-
ment or, arguably, by the military leadership. In no case may decisions
to launch belligerent reprisals be taken by individual combatants.

• Termination: Belligerent reprisals must be discontinued as soon
as the enemy ceases its violation of IHL.1130

The extensive range of prohibitions and strict conditions imposed on bel-
ligerent reprisals has significantly restricted the use of this instrument in
contemporary armed conflicts. For certain States, the restrictive regime of
Additional Protocol I was a reason not to ratify the treaty, while others have

1130 Draft Articles, op. cit. (note 1037), Art. 53.

San José del Guaviare, Colombia, 2010. Men from the forest infantry battalion commanded by
General José Joaquin Ricaurte attend an IHL dissemination session.

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made reservations to the relevant provisions. In general, given that belliger-
ent reprisals carry a considerable risk of abuse and counter-reprisal, all of
which may exacerbate the conflict, there is a continuing trend towards their
general prohibition as a means of enforcing compliance with IHL.

6. Role of humanitarian and non-governmental organizations
IHL provides humanitarian organizations, such as the ICRC and the National
Societies, with a right to offer their services for the benefit of victims of armed
conflict.1131 In practice, this right translates into a range of humanitarian services
and activities to provide persons affected by such situations with the assistance,
support and protection they are entitled to under IHL.1132 The right to offer
services may also be exercised by any impartial humanitarian or non-govern-
mental organization capable of responding to humanitarian needs arising in
situations of armed conflict, such as Médecins Sans Frontières, a well-known
non-governmental organization specializing in providing medical and human-
itarian relief. However, the ICRC’s right of initiative extends further, enabling it
“to make any proposal it deems to be in the interest of the victims of the con-
flict.”1133 Pursuant to that right, the ICRC has been granted observer status at
the UN, where it can share its positions on various humanitarian issues and
take part in various expert processes to address them.1134 Other organizations
are also active in the field of non-judicial enforcement, but adopt a different
approach. For example, Amnesty International, Human Rights Watch and
Human Rights First focus on ensuring respect for IHL and human rights law
by denouncing violations. The reports produced by such human rights organi-
zations increasingly also address questions of IHL and, through their impact on
public opinion, may significantly influence its implementation and enforcement
in a manner that complements the strictly confidential approach of the ICRC.

➝ On the special role of the ICRC with regard to IHL, see Chapter 8.

1131 GC I–III, Art. 9; GC IV, Art. 10; AP I, Art. 81; GC I–IV, Art. 3(2); AP II, Art. 18(1).
1132 See Chapter 8.II.
1133 “The ICRC is granted observer status at the United Nations,” IRRC, No. 279, December

1990.
1134 For example, the Guiding Principles on Internal Displacement. For more information on

the general right of humanitarian initiative, see Chapter 8.II.6.

IMPLEMENTATION AND ENFORCEMENT OF IHL 305

VIII. SPECIFIC ISSUES ARISING
IN NON-INTERNATIONAL ARMED CONFLICTS

1. Obligation to respect and ensure respect for IHL
The duty of States to ensure respect for the Conventions in all circumstances
also applies in non-international armed conflicts and obliges not only States
involved in such conflicts, including the “territorial State”, on whose terri-
tory the conflict is taking place, but also third States. Therefore, appeals or
other peaceful measures taken by non-belligerent States to ensure respect
for IHL in non-international armed conflicts may no longer be regarded as
prohibited interference in the territorial State’s internal affairs. The same
principle also prohibits third States from supporting parties to a non-inter-
national armed conflict in committing IHL violations. Moreover, IHL gov-
erning non-international armed conflicts is binding not only on belligerent
States, but on “each Party to the conflict,” which means that non-State armed
groups, too, must respect IHL and prevent violations by their members.1135

2. Legal status and capacity of non-State armed groups
The fact that treaty IHL creates direct obligations for non-State parties to
a conflict does not affect their legal status under international law.1136 In
essence, this means that contracting States are prepared to impose humani-
tarian obligations on non-State actors and to respect those obligations in
armed conflicts with such groups. However, they are not prepared to afford
armed groups the international legal status and legitimacy that, for example,
a traditional “recognition of belligerency” would entail. There has been some
controversy as to the legal personality of non-State armed groups and the
precise legal basis for their direct obligations under international law. The
most widely accepted explanation is that States, in line with their right and
duty to ensure respect for IHL within their sovereign sphere of influence,
may impose the prohibitions and obligations necessary for this purpose on
any citizen or non-State actor within their jurisdiction. Outside their own
territory, however, States may impose obligations only on their own mil-
itary personnel or civilian representatives, whereas the right to regulate the
conduct of non-State armed groups falls to the territorial State. Thus, the
applicability of treaty provisions regulating the rights and duties of non-
State armed groups is generally limited to the territory of the contracting
States.1137 Admittedly, this approach does not resolve all questions arising
in connection with the rights and duties of non-State armed groups under
IHL. For example, if organized armed groups are obliged to respect IHL,

1135 GC I–IV, common Art. 3.
1136 GC I–IV, common Art. 3(4).
1137 See the territorial references in GC I–IV, common Art. 3, and AP II, Art. 1(1).

306 CHAPTER 7

what are the legal consequences of violations committed by them, in terms
of their legal responsibility and duty to provide reparations? How can such
groups criminalize, prosecute and punish violations of IHL in accordance
with the principles of a fair trial, if they lack the right to legislate, as well as
the capacity to conduct court proceedings and operate detention facilities
that meet the requirements of IHL?

3. Lack of formal implementation mechanisms
Owing to the reluctance of States to afford non-State armed groups
any degree of legitimacy, neither common Article 3 nor Additional
Protocol  II provides for Protecting Powers, enquiry procedures, fact-
finding commissions or other international implementation mechanisms.
In fact, customary IHL generally prohibits parties to non-international
armed conflicts from resorting to belligerent reprisals, and from directing
any other countermeasures against persons not, or no longer, taking a
direct part in hostilities.1138 Only a general duty to disseminate IHL may
be derived directly from treaty IHL.1139 In reality, the enforcement of IHL
in non-international armed conflicts still largely depends on domestic law
enforcement mechanisms and international supervision based on the right
of humanitarian initiative, as enshrined in common Article 3.

4. Individual criminal responsibility
IHL governing non-international armed conflict stipulates that, after the end
of hostilities, the broadest possible amnesty should be granted to persons
who have participated in the conflict or those deprived of their liberty for
reasons related to the conflict, albeit with the exception of persons suspected
of, accused of or sentenced for war crimes.1140 The concept of war crimes
applicable to non-international armed conflicts includes serious violations
of common Article 3, of Additional Protocol  II and of customary IHL.1141
The principle of individual criminal responsibility for serious violations
of IHL was first extended to non-international armed conflicts in the
jurisprudence of the ICTY.1142 It has since been incorporated in the provision
on war crimes contained in the Rome Statute1143 and is today recognized as
part of customary IHL.1144

1138 CIHL, Rule 148.
1139 AP II, Art. 19.
1140 AP II, Art. 6(5); CIHL, Rule 159.
1141 See Rome Statute, Art. 8(2)(c) and (e), and (slightly diverging) CIHL, Rule 156.
1142 ICTY, The Prosecutor v. Dusko Tadić, op. cit. (note 69), para. 129.
1143 Rome Statute, Art. 8(2)(c)-(f ).
1144 CIHL, Rules 152–158.

IMPLEMENTATION AND ENFORCEMENT OF IHL 307

5. Special agreements and unilateral declarations
As far as humanitarian consequences are concerned, there are no
fundamental differences between international and non-international
armed conflicts. In both types of armed conflict, the conduct of hostilities
causes death and injury among military personnel and civilians, and the
destruction of military equipment and civilian property and infrastructure.
As a consequence of hostilities, entire populations may have to endure
displacement, starvation, abuse or disease. Families may be torn apart and
dispersed, relatives and friends may go missing and scores of individuals
may be detained or interned. In trying to alleviate the suffering of persons
affected by armed conflicts, IHL addresses these issues in a similar manner
for both international and non-international armed conflicts.

Thus, common Article 3(3) encourages parties to a non-international armed
conflict “to bring into force, by means of special agreements, all or part
of the other provisions” of the Conventions. In addition to strengthening
and clarifying the legal regime governing non-international armed con-
flict, and given that they do not affect the legal status of the contracting
parties, special agreements may also provide a pragmatic way to overcome
diffi culties relating to issues such as the applicability of certain treaties or
the legal classification of a conflict. A special agreement may bring into
application either all or selected IHL provisions governing international
armed conflicts. It may establish new legal obligations if it goes beyond the
laws already applicable to the context, or may be of a merely declaratory
nature, if limited to restating treaty or customary law provisions that are
already binding on the parties. In practice, such special agreements are often
proposed, prepared and facilitated by the ICRC, and limited to particular
provisions of IHL, such as those regulating the establishment of safety zones
or the simultaneous release of wounded prisoners. However, broader refer-
ences to IHL governing international armed conflicts have also been made,
such as during the conflict in the former Yugoslavia.

States are often reluctant to enter into special agreements with organized
armed groups, in order to avoid supporting the groups’ efforts to gain polit-
ical legitimacy. In such cases, organized armed groups may also make uni-
lateral declarations, expressing their intent to respect and (ideally) ensure
respect for all, or part, of IHL. Even though such declarations may often
be politically motivated, they can be a powerful tool for contacting organ-
ized armed groups, improving their internal accountability and, ultimately,
securing their compliance with IHL.

308 CHAPTER 7

1145

1145 All ICRC documents available at: www.icrc.org

To go further (Specific issues arising in non-international armed conflicts)1145

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 12: The Law of Non-
International Armed Conflicts and Chapter 13: Implementation mechanisms,
State responsibility, Criminal repression, pp. 327–444.

• “Understanding armed groups and the applicable law,” IRRC, Vol. 93, No. 882,
June 2011.

• “Engaging armed groups,” IRRC, Vol. 93, No. 883, September 2011.

• Ezequiel Heffes and Marco D. Kotik, “Special agreements concluded by armed
opposition groups: Where is the law?,” European Journal of International Law:
Talk!, 27 February 2014. Available at: http://www.ejiltalk.org/author/heffeskotlik/

How Does Law Protect in War?

• Case No. 61, UN, Secretary-General’s Reports on the Protection of Civilians
in Armed Conflicts (Part A., paras 19–21; Part B., paras 38–47)

• Case No. 202, Geneva Call, Puntland State of Somalia adhering to a total ban
on anti-personnel mines

• Case No. 204, Former Yugoslavia, Special Agreements Between the Parties to
the Conflicts

Chapter 8
The special role of the ICRC

The Committee of Five, which founded the Red Cross in 1863: Louis Appia, Guillaume-Henri
Dufour, Henry Dunant, Théodore Maunoir, Gustave Moynier.

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Structure
I. Purpose and status of the ICRC
II. Legal basis for ICRC action
III. The ICRC as the “guardian of IHL” 1146

1146 All ICRC documents available at: www.icrc.org

In a nutshell

➝ The ICRC is an impartial, neutral and independent organiza-
tion, with its own status. Its exclusively humanitarian mission
is to protect and assist the victims of armed conflicts and other
situations of violence.

➝ The ICRC also endeavours to prevent suffering by promoting
and strengthening IHL and universal humanitarian prin-
ciples.

➝ The ICRC directs and coordinates the international activities
of the Movement in situations of armed conflict.

➝ The legal basis for the ICRC’s activities can be found in treaty
IHL and the Statutes of the Movement.

➝ In carrying out its mandate, the ICRC: (1) aims to prevent vi-
olations of IHL by maintaining an operational presence, en-
gaging in dialogue and disseminating knowledge of IHL; (2)
takes all available measures to end ongoing violations of IHL
and to prevent their recurrence; and (3) engages in a continu-
ous process to reaffirm and strengthen IHL.

To go further1146

• This isn’t a story about hate. It’s a story about love, film, ICRC, 2017. Available
at: https://www.youtube.com/watch?v=7nyZdzGA1Q0

• Marco Sassòli, Antoine Bouvier and Anne Quintin, How Does Law Protect
in War?, ICRC, Geneva, 2011, Vol. I, Chapter 15: The International Committee
of the Red Cross, pp. 465–494.

• “ICRC: 150 Years of Humanitarian Action,” IRRC, Vol. 94, No. 888, Winter
2012.

• “Who We Are,” webpage, ICRC.

THE SPECIAL ROLE OF THE ICRC 313

If there is one institution that stands out with regard to the worldwide
promotion and implementation of IHL, it is the ICRC. Inspired by Henry
Dunant’s account of the battle of Solferino, the ICRC was formally estab-
lished in 1863 as a private association of Swiss citizens and has, since that
date, played a seminal role in the development and implementation of IHL.

I. PURPOSE AND STATUS OF THE ICRC

1. An impartial, neutral and independent
humanitarian organization

From the outset, the ICRC has had a dual purpose: to provide relief to
the victims of armed conflict, as a neutral and independent humanitarian
organization, and to promote efforts to reaffirm and develop the laws and
customs of war, with a view to strengthening the protection of persons not,
or no longer, directly participating in hostilities. The ICRC initially focused
on protecting medical personnel and wounded, sick or shipwrecked com-
batants in international armed conflicts; but, as the means and methods of
warfare evolved, the organization gradually extended its activities to other
categories of person, such as prisoners of war, the civilian population and,
after World War II, the victims of non-international armed conflicts.

Today, the ICRC describes its mission as follows:

The International Committee of the Red Cross (ICRC) is an
impartial, neutral and independent organization whose exclusively
humanitarian mission is to protect the lives and dignity of victims
of armed conflict and other situations of violence, and to provide
them with assistance. The ICRC also endeavours to prevent
suffering by promoting and strengthening humanitarian law and
universal humanitarian principles. Established in 1863, the ICRC
is at the origin of the Geneva Conventions and the International
Red Cross and Red Crescent Movement. It directs and coordinates
the international activities conducted by the Movement in armed
conflicts and other situations of violence.1147

➝ For further information on the origins of the ICRC, see beginning of
Chapter 4.

1147 ICRC mission statement. Available at: https://www.icrc.org/en/who-we-are/mandate

314 CHAPTER 8

2. Sui generis status
According to the Statutes of the Movement, the ICRC has “a status of its own”
(sui generis).1148 As a private association under Swiss law, the ICRC is not an
intergovernmental organization. However, in contrast to non-governmental
organizations, the ICRC’s recognized international legal personality enables
it to sign headquarters agreements with States to provide its personnel, prem-
ises and correspondence with diplomatic protection. Although the ICRC’s
headquarters and employees in Geneva remain subject to Swiss law, its head-
quarters agreement with Switzerland duly takes into account the organi-
zation’s international mandate. The sui generis character of the ICRC is
further illustrated by the fact that, in 1990, it was granted observer status
by the UN General Assembly.1149

3. Component of the International Red Cross
and Red Crescent Movement

The ICRC is also the founding body and a key component of the Movement,
which comprises all National Societies, the International Federation and
the ICRC. The Movement is a humanitarian network that addresses issues
of international Red Cross policy while acknowledging the independence
of each component. The Movement is unique in that it constitutes a truly
universal humanitarian network, operating in line with a single set of seven
Fundamental Principles:1150

(1) Humanity: The Movement, born of a desire to bring assistance
without discrimination to the wounded on the battlefield,
endeavours, in its international and national capacity, to prevent
and alleviate human suffering wherever it may be found. Its
purpose is to protect life and health, and to ensure respect for
the human being. It promotes mutual understanding, friendship,
cooperation and lasting peace amongst all peoples.

(2) Impartiality: It makes no discrimination as to nationality, race,
religious beliefs, class or political opinions. It endeavours to
relieve the suffering of individuals, being guided solely by their
needs, and to give priority to the most urgent cases of distress.

1148 Statutes of the International Red Cross and Red Crescent Movement, adopted by the
25th International Conference of the Red Cross at Geneva in October 1986 and amended
by the 26th International Conference of the Red Cross and Red Crescent at Geneva
in December 1995 and by the 29th International Conference of the Red Cross and
Red Crescent at Geneva in June 2006 (Statutes of the Movement), Art. 5(1).

1149 UN General Assembly Resolution 45/6, 16 October 1990.
1150 Preamble, Statutes of the Movement.

THE SPECIAL ROLE OF THE ICRC 315

(3) Neutrality: In order to continue to enjoy the confidence of all, the
Movement may not take sides in hostilities or engage at any time in
controversies of a political, racial, religious or ideological nature.

(4) Independence: The Movement is independent. The National
Societies, while auxiliaries in the humanitarian services of their
governments and subject to the laws of their respective countries,
must always maintain their autonomy so that they may be able at all
times to act in accordance with the principles of the Movement.

(5) Voluntary Service: It is a voluntary relief movement not
prompted in any manner by desire for gain.

(6) Unity: There can be only one Red Cross or one Red Crescent
in any one country. It must be open to all. It must carry on its
humanitarian work throughout its territory.

(7) Universality: The International Red Cross and Red Crescent
Movement, in which all Societies have equal status and share equal
responsibilities and duties in helping each other, is worldwide.

The overarching ideals of the Movement are expressed in the mottos Inter
arma caritas (In war, charity) and Per humanitatem ad pacem (With
humanity towards peace).

An ICRC delegate at the Central Prison in Gaza, in the occupied Palestinian territory, 2010.

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II. LEGAL BASIS FOR ICRC ACTION1151

Th e legal basis for ICRC action is to be found in treaty IHL, State practice
and the Statutes of the Movement, all of which constitute binding sources
of law. Under the provisions of treaty IHL, belligerent States must grant
the ICRC “all facilities within their power so as to enable it to carry out
the humanitarian functions assigned to it by the Conventions and this
Protocol,”1152 including: (1) acting as substitute for, or complementing the
actions of the Protecting Powers, (2) visiting prisoners of war and other
protected persons, (3) operating the Central Tracing Agency, (4) providing
humanitarian assistance, (5) fulfilling the ICRC’s special mandate with
regard to IHL, and (6) exercising a general right of humanitarian initiative.

1. Acting as a substitute for or complementing the actions
of Protecting Powers

In cases where the belligerents fail to designate any Protecting Powers, the
ICRC may serve as a substitute for Protecting Powers, and perform the
humanitarian functions assigned to them by the 1949 Geneva Conventions
and Additional Protocol I.1153 In these treaties, the most important functions
are generally simultaneously assigned to both the Protecting Powers and the

1151 All ICRC documents available at: www.icrc.org
1152 AP I, Art. 81(1).
1153 GC I–III, Art. 10; GC IV, Art. 11; AP I, Art. 5(4).

To go further (Purpose and status of the ICRC)1151

• François Bugnion, The International Committee of the Red Cross and the
Protection of War Victims, ICRC, Geneva, 2003, 1161 pp.

• David P. Forsythe, The Humanitarians: The International Committee of the
Red Cross, Cambridge University Press, Cambridge, 2005, 256 pp.

• Daniel Palmieri, “An institution standing the test of time? A review of 150
years of the history of the International Committee of the Red Cross,” IRRC,
Vol. 94, No. 888, Winter 2012, pp. 1273–1298.

• Jean Pictet, The Fundamental Principles of the Red Cross: Commentary, ICRC,
Geneva, 1979. Available at: https://www.icrc.org/eng/resources/documents/
misc/fundamental-principles-commentary-010179.htm

How Does Law Protect in War?

• Document No. 27, Agreement between the ICRC and Switzerland

THE SPECIAL ROLE OF THE ICRC 317

ICRC. For example, the Protecting Powers and the ICRC have the right to lend
their good offices in relation to the institution and recognition of hospital
zones and localities1154 and, most importantly, to visit prisoners of war and
other protected persons.1155 Unlike the Protecting Powers, however, the ICRC
may assist not only nationals of a particular State, but any persons protected
by the 1949 Geneva Conventions, regardless of their nationality or allegiance.

2. Access to prisoners of war and other protected persons
The ICRC must be permitted to visit all places and premises where prisoners of
war may be held.1156 With regard to civilians protected under the provisions of
the Fourth Geneva Convention, ICRC delegates must be allowed access not only
to places of internment and detention, but to any place where protected persons
may be throughout the national territory of a State, and in territories under bel-
ligerent occupation.1157 The purpose of these visits is to objectively evaluate the
humanitarian needs of the persons visited, monitor compliance with IHL in
connection with their treatment and, if they have been deprived of their liberty,

1154 GC I, Art. 23; GC IV, Art. 14.
1155 See Section II.2.
1156 GC III, Art. 126.
1157 GC IV, Arts 76(6) and 143.

A young patient at the ICRC’s orthopaedic centre in
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verify that their internment or detention conditions comply with IHL. In order
to carry out this task, the ICRC must be able to freely select the places it visits
and the visiting delegates must be able to interview, without a witness present,
any prisoner of war or other protected person they encounter and to record their
identities. The ICRC must also be allowed to repeat its visits, as these are crucial
to monitoring the treatment of detainees and other protected persons. While
the ICRC must always take into account the security needs of the belligerent
parties, the latter may neither prohibit the ICRC’s visits to prisoners of war or
other protected persons nor restrict their duration or frequency, save in excep-
tional and temporary situations of imperative military necessity.1158

Belligerent States are also obliged to facilitate the right of prisoners of war or
other persons protected by the 1949 Geneva Conventions to communicate
with ICRC representatives on their own initiative, whether individually or
collectively through elected representatives. This right may be exercised for a
variety of purposes, such as requesting assistance, reporting violations of IHL,
or making any other complaints, suggestions or requests.1159 In contrast to Pro-
tecting Powers, which may receive applications only from nationals of States
whose interests they have agreed to represent, the ICRC may receive commu-
nications from any persons protected by the 1949 Geneva Conventions. Fol-
lowing contact with prisoners of war or other protected persons, the ICRC may
decide to provide humanitarian assistance in response to identified needs or, in
the case of IHL violations, take appropriate steps to prevent further violations.

3. Central Tracing Agency
The work of the Central Tracing Agency is closely tied to the ICRC’s visits to
prisoners of war and other protected persons. The Agency’s mandate is laid out
in the 1949 Geneva Conventions and it is managed by the ICRC. The Agency’s
primary purpose is to trace missing persons, unaccompanied children and
anyone in the power of an adverse party, to inform their country of origin or
allegiance of their whereabouts, and to restore family links ruptured by war.1160
Any information that might help to identify and reconnect persons in
particular need of protection is collected, stored in a centralized database and
forwarded by the Agency. The Agency arranges the exchange of family
correspondence when the usual means of communication have been disrupted,
the transfer and repatriation of individuals, and the reunification of separated
families. In fulfilling these tasks, the Agency may also issue certain documents,
such as temporary ICRC travel documents for persons without identity papers,
and certificates of captivity, hospitalization or death for former detainees,

1158 GC III, Art. 126; GC IV, Arts. 76(6) and 143.
1159 GC III, Arts 78 and 81(4); GC IV, Arts 30 and 104(3).
1160 GC III, Art. 123; GC IV, Arts 25, 136 and 140; AP I, Arts 33(3) and 78(3).

THE SPECIAL ROLE OF THE ICRC 319

prisoners of war or other rightful claimants. The Agency usually works in close
cooperation with the National Societies; and the belligerent parties must
facilitate these activities to the greatest possible extent.

4. Humanitarian assistance
Belligerent and non-belligerent States have a basic duty to allow and facilitate
the delivery of impartial humanitarian relief in areas within and outside
their territorial control.1161 Although the 1949 Geneva Conventions do not
give the ICRC an exclusive mandate to provide humanitarian relief, its
treaty-based right of access to victims of armed conflict certainly gives the
organization a unique position in this respect. The Conventions explicitly
mention, for example, that the ICRC may provide humanitarian assistance
to prisoners of war and other protected persons,1162 that the organization
may be entrusted with the transport of relief shipments,1163 and that its
representatives may supervise the distribution of aid.1164 Should military
necessity or other essential security considerations require restrictions to
be placed on the number or frequency of such relief shipments, due notice

1161 GC IV, Art. 23; AP I, Art. 70(2); AP II, Art. 18(2); see also Chapter 6.IV.
1162 GC III, Art. 125; GC IV, Arts 59 and 142.
1163 GC III, Art. 75; GC IV, Art. 111.
1164 GC III, Art. 73(3); GC IV, Arts 61 and 109(3).

Ubangui river, Congo, 2011. An ICRC team on its way to Bolombe to distribute manioc seed,
farm implements and fishing equipment under a programme benefiting about 100,000 people
in the Likouala district.

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must be given to the ICRC,1165 and its “special position in this field shall be
recognized and respected at all times.”1166 Thus, ideally, the ICRC should
either be exempt from restrictions placed on the activities of relief societies
or, at the very least, be the last organization to which they are applied.1167

5. Legal basis for the ICRC’s special mandate with regard to IHL
The universally recognized role of the ICRC as the “guardian of IHL” is only
briefly mentioned in the 1949 Geneva Conventions and Additional Proto-
col I. Of course, to a certain extent, this role may be regarded as an implicit
part of the ICRC’s operational mandate to assist protected persons. Given
that the ICRC shares many of those tasks with other organizations or Pro-
tecting Powers, it is probably more accurate to say that, historically, instead
of being primarily defined in treaty IHL, the legal basis for the organiza-
tion’s special mandate with regard to IHL has developed through longstand-
ing and uniform State practice.

For example, the ICRC’s work to prepare and facilitate the drafting and
adoption of the Geneva Conventions of 1864, 1906, 1929 and 1949, and their
three Additional Protocols of 1977 and 2005, had no explicit legal basis in
treaty IHL. The 1977 Additional Protocols merely provide that Switzerland
– as the depositary – should consult not only with the other States Parties,
but also with the ICRC, before convening a conference to consider proposed
amendments to the text.1168 Also, other than describing the ICRC as a neutral
and impartial humanitarian body, treaty IHL provides no definition of the
ICRC’s modus operandi with regard to the reaffirmation and development
of IHL. Instead, the organization’s modus operandi has gradually developed
over 150 years, drawing from its own practice and that of belligerent States.

Today, of course, the ICRC’s “guardianship” of IHL is expressly recognized
in the Statutes of the Movement, an instrument adopted not only by the
components of the Movement, but also by all States party to the 1949 Geneva
Conventions, thus providing it with quasi-universal legitimacy.1169 Most
notably, the Statutes provide the ICRC with the specific mandate:

1165 GC IV, Art. 108(2).
1166 GC III, Art. 125(3); GC IV, Art. 142(3).
1167 J.S. Pictet (ed.), Commentary on the Third Geneva Convention, op. cit. (note 491), p. 601.
1168 AP I, Art. 97; AP II, Art. 24.
1169 The Statutes of the Movement were adopted at the 25th International Conference of the

Red Cross and Red Crescent in 1986 (146 participating States). They have subsequently
been revised, and thus de facto endorsed, by the States party to the Geneva Conventions
attending the International Conferences in 1995 (176 States Parties) and 2006 (185 States
Parties), respectively. On that basis, it can be affirmed that the Statutes of the Movement
have been almost universally endorsed by States.

THE SPECIAL ROLE OF THE ICRC 321

• to promote awareness and disseminate knowledge of IHL, and to
prepare any development thereof;

• to undertake the tasks incumbent upon it under the 1949 Geneva
Conventions, to work for the faithful application of IHL applicable
in armed conflicts and to take cognizance of any complaints based
on alleged breaches of that law;

• to provide protection and assistance to military and civilian vic-
tims of armed conflicts;

• to operate the Central Tracing Agency;

• to cooperate with National Societies on matters such as their
prepar ation for armed conflict, fostering respect for, strength-
ening and promoting the ratification of the 1949 Geneva Conven-
tions, and the dissemination of IHL.1170

The ICRC also endeavours to ensure that its existing rights, privileges
and working procedures are acknowledged in each context through head-
quarters agreements and memoranda of understanding.

➝ On the ICRC’s role and modus operandi as the “guardian of IHL,”
see Chapter 8.III below.

6. General right of humanitarian initiative
Apart from the humanitarian functions specifically assigned to the ICRC
to protect and assist victims of conflict, the 1949 Geneva Conventions and
Additional Protocol I also provide the organization with a specific legal basis
to “carry out any other humanitarian activities in favour of these victims,
subject to the consent of the Parties to the conflict concerned,”1171 and confirm
that the provisions of these instruments may not be interpreted to constitute
an obstacle to the protection and relief activities of the ICRC.1172 In non-
international armed conflicts, common Article 3 provides that an “impartial
humanitarian body, such as the International Committee of the Red Cross,
may offer its services to the Parties to the conflict.”1173 This means that the
Geneva Conventions and their Additional Protocols leave it up to the ICRC to
decide what humanitarian activities it deems most appropriate in a particular
situation. While States Parties are not obliged to accept any proposals or offers
of service made by the ICRC on its own initiative, they may not regard them as

1170 Statutes of the Movement, Art. 5.
1171 AP I, Art. 81(1).
1172 GC I–III, Art. 9; GC IV, Art. 10.
1173 GC I–IV, Art. 3(2); see also AP II, Art. 18.

322 CHAPTER 8

an illegitimate intervention, and must at least receive and consider them in good
faith.1174 During armed conflicts, now and in the past, the ICRC’s recognized
right of humanitarian initiative has always been one of the legal cornerstones
of its operational action and its activities to reaffirm and strengthen IHL.1175

The Statutes of the Movement also provide that the ICRC “may take any
humanitarian initiative which comes within its role as a specifically neutral
and independent institution and intermediary, and may consider any ques-
tion requiring examination by such an institution”.1176 Thus, the ICRC’s right
of humanitarian initiative extends beyond situations of armed conflict to
internal disturbances and tensions, and any other situations that warrant
humanitarian action. In fact, even where IHL does not apply, the ICRC may
offer its services to governments without that offer amounting to interfer-
ence in the internal affairs of the State in question.

1177

III. THE ICRC AS THE “GUARDIAN OF IHL”

In promoting respect for IHL, in line with its broad mandate and role under
treaty IHL and the Statutes of the Movement, the ICRC essentially follows
a three-pronged approach. Firstly, the ICRC’s preventive strategy aims to

1174 Vienna Convention on the Law of Treaties, Art. 31.
1175 See Section III.4.
1176 Statutes of the Movement, Art. 5(3).
1177 All ICRC documents available at: www.icrc.org

To go further (Legal basis for ICRC action)1177

• “The future of humanitarian action,” IRRC, Vol. 93, No. 884, December 2011.

• “The ICRC’s Mandate and Mission,” webpage, ICRC. Available at: https://www.
icrc.org/eng/who-we-are/mandate/overview-icrc-mandate-mission.htm

How Does Law Protect in War?

• Document No. 31, Statutes of the International Red Cross and Red Crescent
Movement

• Document No. 32, The Seville Agreement

• Document No. 34, ICRC, Tracing Service

• Document No. 39, ICRC, Protection of War Victims

• Document No. 40, ICRC, Protection Policy

• Case No. 41, ICRC, Assistance Policy

THE SPECIAL ROLE OF THE ICRC 323

avert IHL violations through its operational presence in the field, its regular
representations to remind belligerent parties of their obligations under IHL,
and by disseminating knowledge of IHL as widely as possible. Secondly, if
the ICRC becomes aware of IHL violations, it takes all available measures
to end them and prevent such violations from recurring. Thirdly, the ICRC
is engaged in ongoing efforts to reaffirm and strengthen IHL, in order to
ensure that this crucial body of law continues to be adequately interpreted
and adapted in light of the evolving nature of warfare.

1. Memoranda to belligerent parties (rappels du droit)
At the outset of any armed conflict, or when the outbreak of hostilities
appears imminent, the ICRC reminds each party of its obligations under
IHL. In the case of States, the ICRC generally sends formal memoranda
to the governments concerned (rappels du droit), while certain organized
armed groups may be better reached through a press release or direct
meetings. The memoranda contain a reminder of the applicable rules and
principles of IHL governing the conduct of hostilities and the protection
of persons in the hands of an enemy. In addition to issuing formal memo-
randa, the ICRC endeavours to engage in a bilateral dialogue with each of
the belligerent parties, in order to secure access to protected persons in their
power, as well as, the facilities, authorizations and guarantees necessary for
its operations.

For example, on 23 September 1980, one day after Iraq attacked the Islamic
Republic of Iran, the ICRC reminded the belligerents of their obligations
under the Geneva Conventions; and on 26 September, the organization
was authorized to send delegates to Iraq. Similarly, as soon as NATO Sec-
retary-General Javier Solana authorized allied military action against the
Federal Republic of Yugoslavia in 1999, the ICRC sent a diplomatic note to
NATO and its member States, as well as to the Yugoslav authorities, remind-
ing them of their obligations under IHL. If necessary, such memoranda may
be re-invoked during the course of an armed conflict, or extended to States
entering the conflict at a later date. For example, on 2 August 1990 – the
same day that Iraqi troops invaded Kuwait – the ICRC reminded the bellig-
erents of their obligation to comply with the Geneva Conventions and, on
23 August, formally requested the Iraqi authorities to allow it to carry out
its mandate in Iraq and occupied Kuwait. In December 1990, when mili-
tary intervention by the international coalition seemed imminent, the ICRC
sent a “Memorandum on the Applicability of International Humanitarian
Law” to all States party to the 1949 Geneva Conventions.1178 Memoranda

1178 ICRC, “Memorandum on the Applicability of IHL,” 14 December 1990. Reprinted in:
IRRC, Vol. 280, 1991, p. 24.

324 CHAPTER 8

submitted to belligerents during the course of an armed conflict or belli-
gerent occupation do not need to be as comprehensive as those submitted
initially, and may focus on particular issues that give the ICRC cause for
concern. For example, since the Arab-Israeli War of 1967, the ICRC has regu-
larly reminded Israel of its obligations under IHL towards the population of
the occupied Palestinian territory, adapting the focus of its memoranda to
take into account observations made by its delegates in the field.

2. Modus operandi in response to violations of IHL
As soon as the ICRC becomes aware that violations of IHL have been com-
mitted, or that such violations are ongoing or imminent, it takes appropriate
steps to prevent or end such acts, and to ensure that they are not repeated
in the future. Depending on the nature and extent of the violations, steps
are taken at various hierarchical levels and using a range of methods. The
ICRC’s modus operandi in this regard has been outlined in a set of institu-
tional guidelines entitled “Action by the International Committee of the Red
Cross in the event of violations of international humanitarian law or of other
fundamental rules protecting persons in situations of violence.”1179

(a) Principal mode of action: Bilateral and confidential
representations

The ICRC’s preferred working method involves bilateral and confidential
representations to belligerent parties, if possible “from the bottom up.” As a
first step, the ICRC approaches the belligerent party concerned in confidence,
if possible at the hierarchical level directly responsible for the violation. The
primary aim is to ensure that those responsible for IHL violations understand
their international obligations, and to convince them to take the measures
necessary to prevent such violations in the future. In order for its bilateral
representations to succeed, the ICRC must operate with absolute integrity and
credibility. This means that the organization cannot take sides in a conflict,
or discriminate against any group of victims. It must be completely neutral
and impartial. Another key aspect of the ICRC’s modus operandi is the
confidential nature of its bilateral dialogue and observations. The fact that the
ICRC maintains such a dialogue, visits places of detention or undertakes other
activities to assist victims of armed conflict is not confidential information.
However, the content of the ICRC’s bilateral dialogue with belligerent parties,
and the observations made by its delegates in the course of their work, are
highly confidential. Put simply, the ICRC says publicly what it does, but not
what it sees.

1179 ICRC, “Action by the International Committee of the Red Cross in the event of violations
of international humanitarian law or of other fundamental rules protecting persons in
situations of violence,” IRRC, Vol. 87, No. 858, June 2005, pp. 393–400.

THE SPECIAL ROLE OF THE ICRC 325

Although confidentiality is not one of the seven Fundamental Principles
governing the ICRC’s actions,1180 the importance of this approach to the
ICRC’s humanitarian mission cannot be overstated. Belligerent parties will
rarely provide the ICRC with unhindered access to security detainees or
other vulnerable persons, or allow its delegates to collect extremely sensitive
information, unless they can be certain that the organization will not publicly
share the information it collects, particularly with regard to IHL violations.
Moreover, even the smallest suspicion that ICRC delegates collecting such
information might personally testify against the perpetrators in subsequent
civil or criminal proceedings could seriously jeopardize the safety of ICRC
staff. Therefore, in 1999, the ICTY decided that ICRC staff could refuse to
give evidence in criminal proceedings. This privilege of immunity has since
been extended to the ICRC as an organization and formally incorporated in
the Rules of Procedure of the ICC.1181 More often than not, confidentiality
serves the interests of both the belligerent party and the victims, particularly
if individual cases are mentioned by name in reports or other documents.
The ICRC therefore asks belligerent parties not to share the content of their
bilateral dialogue including, in particular, the ICRC’s reports on observations
made during detention visits or other activities to assist protected persons.
The ICRC stresses in each report that its contents are strictly confidential, that
they are intended only for the authorities to whom the report is addressed,
and that neither the report as a whole nor any part thereof may be divulged
to a third party or the public. Should selected parts of such a report be leaked
by the detaining authority to which it is submitted, for instance to influence
public opinion on its compliance with IHL, the ICRC reserves the right to
publish the full contents of the leaked report, in order to prevent inaccurate
or incomplete interpretations of its observations and recommendations.

(b) Subsidiary modes of action
The confidentiality of the ICRC’s bilateral dialogue is a policy choice that is
neither obligatory nor unconditional. It presupposes a commitment made in
good faith by the authorities to give due consideration to the ICRC’s concerns,
observations and recommendations with regard to ensuring respect for
IHL. If the authorities concerned manifestly refuse to cooperate with the
ICRC, the organization will generally raise its bilateral and confidential dia-
logue to the next level within the military or administrative structure of the
State or armed group in question. Should the ICRC’s bilateral and confiden-
tial representations on all relevant hierarchical levels fail to prevent further

1180 See Section I.3.
1181 ICTY, The Prosecutor v. Blagoe Simic et al., Trial Chamber, Decision on the Prosecution

Motion under Rule 73 for a ruling concerning the testimony of a witness, Case No. IT-
95-9-PT, 27 July 1999; Rules of Procedure and Evidence of the International Criminal
Court, Rule 73(4).

326 CHAPTER 8

violations of IHL, and if there is no prospect of improving the situation, the
ICRC may decide to resort to a number of subsidiary measures.

Humanitarian mobilization
As a first step, the ICRC may decide to “extend the circle of confidentiality”
and to share all or some of its concerns (again on the condition of mutual
confidentiality) with governments of third countries, international or
regional organizations, or individuals in a position to influence the actions
of the belligerent party in question. Such confidential humanitarian mobi-
lization is directed primarily at States, and is based on their international
obligation to exert pressure on the belligerent party “to ensure respect” for
IHL in all circumstances, and to avoid encouraging, supporting or other-
wise facilitating IHL violations.1182 While the ICRC may engage in this kind
of humanitarian mobilization, it makes no recommendations regarding
measures to be taken by States, organizations or individuals.

Public declaration on the quality of the confidential, bilateral dialogue
The ICRC may also decide to publicly express its concerns regarding the
quality of its confidential, bilateral dialogue with the belligerent party, or
the quality of the response to its recommendations on a specific humani-
tarian problem, albeit without actually disclosing the exact content of the
dialogue, or the recommendations or response in question. The purpose of
publicly expressing dissatisfaction with the dialogue or cooperation main-
tained with a belligerent party is not to “name and shame,” but to prompt
a better response to the ICRC’s representations and recommendations, and
prevent the organization’s silence being wrongly interpreted as evidence that
the humanitarian situation is satisfactory.

Public condemnation
Finally, as a last resort in the face of repeated serious violations of IHL, the
ICRC reserves the right to publicly condemn specific violations of IHL and
to call for them to cease immediately. In order for the ICRC to issue a public
condemnation, the following four conditions must be met in each case:

(1) the violations are major and repeated, or likely to be repeated;
(2) there is reliable and verifiable evidence of such violations, or they

have been witnessed by ICRC delegates themselves;
(3) bilateral confidential representations and, when attempted,

humani tarian mobilization efforts have failed to put an end to the
violations;

1182 See Chapter 7, Sections III.1. and IV.2.

THE SPECIAL ROLE OF THE ICRC 327

(4) last but not least, no public condemnation may be made unless it is
in the interest of the protected persons or populations concerned.

In fact, the ICRC has rarely issued public condemnations. When it has, the
statements have mainly related to situations where regular and repeated
representations have failed to yield the necessary results, where IHL vio-
lations have clearly been part of a deliberate policy, or where the ICRC has
been completely unable to obtain access to the authorities concerned. In
each case, the ICRC must be convinced that public pressure constitutes the
only means of achieving respect for IHL. When considering the interests
of the persons or populations affected by an IHL violation, the ICRC must
take into account both their short-term interests, in terms of humanitarian
protection and relief, and their long-term interests, in terms of the ICRC’s
continued access to war victims not only in the current situation, but also
during other armed conflicts in the future. Public condemnation of IHL
violations always involves the weighing up of extremely complex considera-
tions: the interests of the ICRC, those of the belligerents and, above all, the
interests of current and future victims of armed conflict.1183

(c) ICRC attitude toward third-party initiatives

Relations with judicial, quasi-judicial or investigating authorities
As mentioned previously, the ICRC does not provide testimony or confiden-
tial documents in connection with investigations or legal proceedings relat-
ing to specific violations. However, this does not prevent the organization
from maintaining regular contact with judicial, quasi-judicial or investigat-
ing authorities on general issues relating to the implementation, application
or interpretation of IHL.

Participation in inquiries and recording of facts
The ICRC does not perform the role of a commission of inquiry and, as a
general rule, neither the organization nor its staff will participate in inquiry
procedures. Instead, the ICRC may encourage belligerent parties to appeal
to the International Humanitarian Fact-Finding Commission.1184 At the
request of all the belli gerent parties concerned, the ICRC may also offer its
good offices to help to establish an impartial commission of inquiry offer-
ing the necessary pro cedural guarantees. However, the ICRC will offer its
limited services only on the understanding that this will in no way under-
mine its usual activities, or its reputation for impartiality and neutrality.

1183 For an example of public condemnation, see “Myanmar: ICRC denounces major and
repeated violations of international humanitarian law,” ICRC, 29 June 2007. Available
at: https://www.icrc.org/eng/resources/documents/news-release/2009-and-earlier/my-
anmar-news-290607.htm

1184 On the International Humanitarian Fact-Finding Commission, see Chapter 7.VII.4.

328 CHAPTER 8

Should the ICRC be asked to record the factual consequences of an IHL
violation, it will do so only for its own purposes, and only if it is satisfied that
the organization’s presence will not be abused for political purposes.

Receiving and communicating complaints
The Statutes of the Movement stipu late that the ICRC’s mandate includes
“taking cognizance” of any complaints based on alleged IHL violations. While
the ICRC is keen to receive all available information on alleged IHL violations, it
accepts no obligations with regard to following up those allegations, unless such
obligations result from its own humanitarian policies and priorities. Thus, the
ICRC may take individual allegations into account in its own activities, but will
not communicate allegations of violations to the incriminated party unless they
have been recorded by its own delegates, or are based on reliable and verifiable
evidence and, above all, only if such a move is in the interest of the victims.
In exceptional circumstances, where all other means of communication have
broken down, the ICRC may agree to communicate allegations of IHL viola-
tions in its capacity as a neutral intermediary between belligerent parties or their
National Societies. While the ICRC generally does not make public the com-
plaints it receives, it may publicly confirm receipt of a complaint, if it concerns
events that are public knowledge.1185

3. Prevention work
Preventive action is the fourth central component of the ICRC’s work, in
addition to its protection, assistance and cooperation activities in response
to violations of IHL and humanitarian needs arising in operational practice.
Prevention work “entails taking action to prevent suffering by influencing
those who can determine – directly or indirectly – the fate of those affected
(by armed conflict and other situations of violence) and generally implies a
medium- or long-term perspective.”1186 The ICRC’s prevention approach aims
to understand the reasons for certain types of behaviour, and how to influence
them.

As part of its prevention work, the ICRC maintains a regular dialogue
with both State and non-State actors, and reminds them of their respective
legal obligations. Moreover, it organizes training courses in IHL for both
State representatives and members of non-State entities, humanitarian
professionals and academics, and regularly publishes texts on various topics
relating to humanitarian law and action. Finally, the ICRC – and particularly
its Advisory Service on International Humanitarian Law – also offers its

1185 ICRC, “Action by the International Committee of the Red Cross in the event of violations
of international humanitarian law or of other fundamental rules protecting persons in
situations of violence,” op.cit. (note 1179), p. 399.

1186 ICRC, Prevention Policy, April 2010, p. 5.

THE SPECIAL ROLE OF THE ICRC 329

services to States to help them incorporate their IHL obligations in national
legislation, institutions and practice.

4. Reaffirmation and strengthening of IHL
As part of its role as the “guardian of IHL,” the ICRC contributes to
strengthening IHL by initiating, organizing or participating in consulta-
tions on the possible adoption of new rules; and preparing, or contributing
to, draft texts for submission to diplomatic conferences. Most notably, the
ICRC made a decisive contribution to the preparation and drafting of the
1949 Geneva Conventions and their Additional Protocols of 1977 and 2005.
More recently, the results of an internal study on the adequacy of IHL led the
ICRC to conclude that the law could be strengthened in four specific areas,
namely: (1) the protection of persons deprived of their liberty in non-inter-
national armed conflicts, (2) the protection of internally displaced persons,
(3) the protection of the environment and (4) implementation mechanisms,
including reparation for victims. Since September 2010, the ICRC has dis-
cussed the study with a number of States, most of whom have expressed
broad support for its conclusions. However, States have expressed a prefer-
ence for prioritizing the protection of detainees in non-international armed
conflicts and improving the implementation of IHL.

➝ For more information, see Textbox 8: “Procedural safeguards for
internment /administrative detention” (Chapter 5.IV.2.b.)

➝ See also Textbox 9: “Swiss/ICRC initiative on strengthening the im-
plementation of IHL” (Chapter 7.III.4.b.).

While working on the formal development of new IHL instruments, the
ICRC may also engage in activities and consultations to clarify existing IHL
provisions. As part of this role, the ICRC has conducted or contributed to a
broad range of consultations, conferences, projects and processes of varied
scope and duration. A select few are mentioned below to illustrate the prac-
tical importance of these efforts.

• Strengthening the protection of victims of armed conflicts:
as mentioned above, the ICRC has conducted a large-scale
consultation process on this issue. The work has focused on
two areas: detention in non-international armed conflicts and
strengthening compliance with IHL.

• Commentaries on the 1949 Geneva Conventions and their
Additional Protocols: The ICRC’s Commentaries on the 1949
Geneva Conventions and their Additional Protocols are an

330 CHAPTER 8

excellent example of institutional guidance on the interpretation
of these instruments. As each Commentary was drafted within a
few years of the adoption of the relevant treaty, the ICRC is in the
process of updating the Commentaries to ensure that they respond
more adequately to interpretive questions arising in contemporary
armed conflicts.

• Study on customary IHL: In 2005, after nearly ten years of re-
search and consultation, the ICRC published a study on customary
IHL, identifying 161 rules that strengthen protection for victims
of armed conflict 1187 (see Textbox 1, Chapter 1.II.2.).

• Montreux Document (2008): In 2008, 17 countries signed the
Montreux Document, which aims to ensure that private military
and security companies working in armed conflicts respect IHL
and human rights law (see Textbox 3, Chapter 1.IV.4.3.). 1188

• Interpretive guidance on direct participation in hostilities
(2009): In 2009, after six years of informal consultations with a
group of more than 50 governmental, military, humanitarian,
academic and non-governmental experts, the ICRC published
its interpretive guidance on the notion of “direct participation in
hostilities.” This notion has grown in significance in the context
of current targeting operations, even though there is no precise
definition in IHL (see Textbox 5, Chapter 3.I.4.c.).1189

In fulfilling the broad mandate bestowed upon it by the international com-
munity, the ICRC has developed a wide range of preventive and reactive
modes of action to ensure respect for IHL, and made a decisive contribu-
tion to its ongoing reaffirmation and development. Despite the paramount
practical importance of the ICRC, however, and its worldwide recognition
as the “guardian” of IHL, we must never forget that it is the international
community of States that is the creator and “guarantor” of this body of law
and that therefore bears ultimate responsibility for the faithful application
and enforcement of its rules.1190

1187 J.-M. Henckaerts and L. Doswald-Beck, Customary International Humanitarian Law,
op. cit. (note 23).

1188 ICRC and Federal Department of Foreign Affairs, Montreux Document on Pertinent
International Legal Obligations and Good Practices for States related to Operations
of Private Military and Security Companies during Armed Conflict, Montreux,
17 September 2008, 43 pp., available at https://www.icrc.org/eng/assets/files/other/
icrc_002_0996.pdf.

1189 N. Melzer, Interpretive Guidance, op. cit. (note 129).
1190 GC I–IV, Art. 1.

THE SPECIAL ROLE OF THE ICRC 331

19931191

1191 All ICRC documents available at: www.icrc.org

To go further (The ICRC as the “guardian of IHL”)1191

• Jean-Marie Henckaerts, “Bringing the Commentaries on the Geneva
Conventions and their Additional Protocols into the twenty-first century,”
IRRC, Vol. 94, No. 888, Winter 2012, pp. 1551–1555.

• Gabor Rona, “The ICRC’s privilege not to testify: Confidentiality in action,”
IRRC, Vol. 84, No. 845, March 2002, p. 207.

• Interpretive Guidance on the Notion of Direct Participation in Hostilities under
International Humanitarian Law, ICRC, Geneva, 2009, 85 pp.

• ICRC, Prevention Policy, Geneva, 2010, 25 pp.

• Montreux +5 Conference: Chairs’ Conclusions, ICRC and Federal De-
partment of Foreign Affairs, Geneva, 13 December 2013. Available at:
https://w w w.icrc.org/eng/assets/files/2014/montreux-plus-5-conclusions-
12-2013.pdf

• “Customary International Humanitarian Law Database,” webpage, ICRC.
Available at: https://www.icrc.org/customary-ihl/eng/docs/home

• “Strengthening International Humanitarian Law,” webpage, ICRC. Available
at: https://www.icrc.org/en/war-and-law/strengthening-ihl

• “Confidentiality: Key to the ICRC’s work but not unconditional,” Interview
with Dominik Stillhart, Deputy Director of Operations at the ICRC, ICRC,
Geneva, 2010. Available at: https://www.icrc.org/eng/resources/documents/
interview/confidentiality-interview-010608.htm

How Does Law Protect in War?

• Document No. 50, ICRC, Sixtieth Anniversary of the Geneva Conventions

• Case No. 170, ICRC, Iran/Iraq Memoranda

• Case No. 214, ICTY/ICC, Confidentiality and Testimony of ICRC Personnel

332 INDEX

Index
Note: Numbers in bold refer to pages in which the concept is specifically
addressed; the other numbers indicate pages in which the concept is simply
mentioned or evoked.

A
Agreement ………………………………………… 22–3, 30, 34–5, 58, 63–4, 68–9, 71, 85,

98, 122, 148–52, 160, 181, 184, 198, 208,
211, 229, 241, 252, 281, 284, 298–300,
306–8, 314, 316, 321–2
see also Special agreement

Ambulance ……………………………………….. see Medical transport
Amnesty ……………………………………………. 208, 306
Armed conflict ………………………………….. 9–13, 16–8, 20–33, 36–9, 41–6, 50–75,

78–87, 89–90, 93, 98, 100, 108–9, 113–5,
118–22, 124–9, 132–5, 141–2, 149–50, 153,
155, 156–65, 170, 171–3, 175–8, 190–1,
193–4, 199, 205–16, 220–3, 226–7, 229–33,
236, 251, 253, 255–61, 264–8, 270, 272–6,
278–9, 281–3, 285–6, 288–90, 292, 294–5,
297–308, 312–3, 319–24, 327–30, 352–3
see also International armed conflict;
Non-international armed conflict

Armed forces …………………………………….. see Combatant
Armed group …………………………………….. 17, 28, 30, 33, 36, 39, 50, 53, 57, 66,

68–71, 74–5, 82, 125–7, 170, 208, 210,
213–6, 227–9, 255–6, 258, 264, 267, 295,
305–8, 323, 325
see also Non-State actor; Organization,
threshold of; Organized, armed group

Asphyxiating, poisonous
or other gases ……………………………………. 7, 35, 112, 120–1, 179

see also Poison
Asymmetric conflict ………………………….. 9, 39, 47, 266

see also Non-international armed conflict
Attack ……………………………………………….. 9, 18–9, 25, 27–8, 30, 33, 37–9, 42–3,

47, 78, 83–97, 99–109, 111, 117, 125–7,
129, 136, 139, 141, 143, 145–51, 153,
164–5, 172, 183, 190, 196, 226, 230, 273,
289–90, 294, 323
see also Indiscriminate attack;
Precautions against the effects of attacks

INDEX 333

Autonomous weapon ………………………… 42, 45, 108, 123
see also Technologies, new; Legal review
of new weapons and technologies

B
Beginning of occupation …………………… see Occupation
Belligerence ………………………………………. see Recognition of belligerence
Biological or
bacteriological weapon ……………………… 6–7, 35, 37, 121, 128

see also Poison
Booby-trap………………………………………… 8, 114–5, 119, 128, 185

see also Mine
Breaches of IHL ………………………………… 31, 107, 249, 269, 283, 287, 289–92, 300, 321

see also Grave breaches; Violation

C
Capture …………………………………………….. 35–6, 38–40, 42, 57, 83, 85, 89, 91–2,

106–9, 140, 147, 158, 173, 178–80,
182–85, 188, 190, 193, 208, 215, 230,
258, 266, 302
see also Detention; Internment

Cease-fire ………………………………………….. 58, 69, 98, 181, 242
see also End of hostilities

Central Tracing Agency …………………….. 156–9, 161–2, 179, 185, 193, 199, 201–2,
224–5, 229, 316, 318–9, 321–2
see also Family reunification;
Missing person

Chemical weapon ……………………………… 6, 37, 120, 128, 272
see also Asphyxiating, poisonous or
other gases; Poison

Children ……………………………………………. 12, 115, 131, 150, 155, 157, 161, 194,
197, 206, 211, 219, 226, 227–9, 239, 253,
257–8, 276, 278, 290, 318
see also Family reunification

Child soldier ……………………………………… 227–8, 258
Civil defence ……………………………………… 81, 88, 98–9, 103, 109, 138–9, 272
Civilian internee ……………………………….. see Internee
Civilian object …………………………………… 17–9, 28, 43, 51, 78, 80, 86–7, 90–105,

111, 115–8, 125–7, 145–6, 152–3, 164,
170, 221, 250–2, 268, 273, 289, 302
see also Objects indispensable to the
survival of the civilian population

334 INDEX

Civilian population …………………………… 18, 24, 28, 30, 35, 39, 42–3, 61, 78–91,
93–105, 111, 118, 125–7, 134, 136, 139,
143, 149–50, 174, 176, 183, 192, 196,
209, 216, 220–1, 225, 227, 230, 232, 235,
237–47, 250–3, 255–60, 265, 271, 273,
289, 290, 302, 306, 313, 324, 326–7
see also Protected persons

Civilian taking part in hostilities ……….. see Direct participation in hostilities
Classification of conflicts …………………… 24, 50–75, 128, 307
Cluster Munitions……………………………… 6, 21, 37, 79, 118–20, 128, 272, 286

see also Indiscriminate weapon;
Explosive remnant of war

Collateral damage ……………………………… 43, 111
see also Incidental damage

Collective punishment ………………………. 189, 195, 204, 223, 240, 248, 257, 288
Combatant ………………………………………… 7, 9, 12, 18, 19–20, 28–30, 32–3, 35–40,

43, 46, 59–60, 63, 66–70, 78–90, 95,
97–8, 102–5, 107–110, 112, 115, 118–9,
125–7, 134–6, 138–40, 142–4, 146,
157–8, 171–8, 180–1, 184, 187, 189, 204,
208, 215, 222, 227–30, 241, 244, 247,
256, 258, 266, 267, 269–272, 281–2, 288,
290–1, 302–3, 313
see also Prisoners of war

– Privilege ………………………………………….. 35–9, 83–90, 125–7, 173–5, 177, 208, 288
– Status………………………………………………. 20, 29, 35, 38–9, 81–5, 108, 126–7,

134–5, 140, 170–9, 188–90, 195, 208,
222, 240, 256

– Unlawful, unprivileged ……………………. see Unlawful and unprivileged combatant
Command responsibility …………………… 264, 269–70, 286–92

see also Individual responsibility
for violation; Superior order

Communication ………………………………… 44, 92, 102, 156–7, 161, 179, 187, 199–203,
224, 245, 247, 267, 298–9, 318, 328

Conditions of detention …………………….. 158, 170–1, 175, 182–215, 248, 317–8
Conduct of hostilities ………………………… 13, 16–20, 25, 27, 29–31, 35–40, 77–129,

145, 171, 173, 178–9, 181, 183, 194, 196,
208, 228, 244–6, 256–8, 289–90, 302, 323
see also Means of warfare; Method of
warfare; Principles of IHL

Conventional Weapons ……………………… 6, 8, 21–2, 24, 37, 104, 114–9, 124,
127–8, 302
see also Weapon

Correspondence………………………………… 158, 161, 185–6, 201–2, 215, 314, 318
see also Communication

INDEX 335

Court ………………………………………………… see Tribunal
Crimes against humanity…………………… 276, 288, 290–1, 296

see also Violation
Cultural Property ………………………………. 7, 28, 79, 93–4, 100, 105, 109, 115, 125,

127, 238, 246, 272, 292, 295, 302
see also Civilian object

Customary international
humanitarian law ………………………………. 6–8, 12–3, 16, 20–7, 34–5, 37, 51, 53–4,

61, 66, 72, 78, 81–2, 94, 106, 108, 112,
114–5, 117–8, 120–1, 123, 126–9, 135,
150–1, 162, 174, 176, 181, 183, 189, 205,
211, 222–3, 240, 242, 249, 253, 257,
259–60, 265–6, 269, 274, 285–6, 288–9,
291–2, 306–7, 313, 329–31, 354

Cyber warfare ……………………………………. 10, 28, 42–4, 122–4
see also Tallinn Manual; Technologies,
new

D
Dams, dykes and nuclear
power stations …………………………………… 94–5, 105, 109, 127, 272, 302

see also Civilian object
Dead person ……………………………………… 58, 98, 115, 132, 155–6, 159–62, 164
Demilitarized zone ……………………………. 97–8, 132, 149–51, 273

see also Hospital zones and localities;
Neutralized zone; Protected area or zone

Derogation ………………………………………… 10, 28, 84, 107, 201–3
Destruction ………………………………………. 6, 12, 17–8, 70, 78, 87, 91–7, 100, 116,

120, 134, 244–5, 266, 290, 297, 306
see also Excessive damage; Incidental
damage; Sabotage

Detainee ……………………………………………. 10, 40, 47, 158, 161, 169–216, 318, 325, 329
see also Internee; Prisoner

Detaining Power ……………………………….. 39, 106, 135, 137, 143, 158, 171, 173,
175–6, 178–216, 232

Detention ………………………………………….. 4, 20, 29–30, 38, 59, 67, 83–4, 89, 142,
157-8, 169–216, 236, 256, 284, 305,
317–8, 324–5, 329
see also Capture; Conditions of
detention; Internment

Direct participation in hostilities ………. 25, 29, 33, 36, 39–40, 59, 78, 81–4,
86–90, 99, 106, 126–7, 129, 135, 145,
162, 171–3, 176, 178, 190, 208–9, 222,
227–8, 230, 256–8, 288, 306, 313, 330–1

336 INDEX

Discrimination ………………………………….. 67, 136, 150, 159, 163, 182, 196, 199,
209, 223–4, 232, 239–40, 243, 247, 253,
256–7, 260, 314, 324
see also Distinction; Indiscriminate
attack; Indiscriminate weapon

Dispersed families …………………………….. see Family reunification
Distinction ………………………………………… 17–8, 20, 38–9, 43, 46, 50, 53–4, 67,

78–100, 104, 109, 111, 114, 122, 125–9,
135–6, 147, 149–50, 159, 163, 171,
173–4, 176, 182, 196, 209, 232, 256, 257,
260, 290
see also Conduct of hostilities;
Principles of IHL

Drone ……………………………………………….. 10, 42, 51, 107, 123–4
Due process ………………………………………. 38, 67, 170–1, 175–6, 178, 181, 187–9, 201,

203–4, 205–6, 210–1, 215, 223, 257, 271
see also Procedural safeguards

Dunant, Henry ………………………………….. 35, 47, 133–4, 139, 311, 313
see also ICRC; Solferino

E
Effective control ………………………………… 4, 13, 18–9, 20, 28, 30, 60–5, 68–9,

101, 103–4, 106, 115, 119–20, 140, 145,
148, 157, 170, 180, 204, 215–6, 219–21,
223–5, 235–6, 238, 249–53, 259–60, 264,
269–70, 281, 287, 294, 319
see also Occupation

Emblem
– Misuse…………………………………………….. 106, 108–9, 154–5, 269,

see also Perfidy
– Protective ……………………………………….. 4, 6, 35, 46, 93, 106, 108, 109, 114, 132–3,

139, 147, 151–5, 164, 230, 269, 272
End of hostilities ……………………………….. 52, 58–9, 62, 71, 116–7, 119, 136, 162, 170,

175, 180–1, 194, 208, 235–6, 242, 306
see also Cease-fire

Enemy ………………………………………………. see Protected person
Environment …………………………………….. 6, 21, 27–8, 46, 78, 96–7, 100, 105,

111–2, 121, 123, 271, 295, 302, 329
see also Objects indispensable to the
survival of the civilian population

Equality of belligerents ……………………… 17, 27, 39, 125, 295
see also Principles of IHL;
Reciprocity (Non-)

Escape ………………………………………………. 12, 60, 106, 113, 179–80, 184, 193, 200,
258

INDEX 337

Espionage ………………………………………….. 109, 176, 190–91, 202, 230, 248
Evacuation ………………………………………… 97–8, 103, 107, 131–2, 136, 141, 144–6,

157, 159, 162, 180, 210, 228–9, 242–3, 258
see also Precautions against the effects of
attacks; Transfer

Excessive damage………………………………. see Proportionality
Exploding and expanding bullets ………. 7, 110, 112–3, 124, 128

see also Means of warfare;
Unnecessary suffering or superfluous
injury; Weapon

Explosive remnant of war ………………….. 79, 118–20

F
Family reunification ………………………….. 58, 157, 161, 195, 197, 223–5, 240, 258,

318
see also Central Tracing Agency

Food …………………………………………………. 95, 100, 112, 115, 150, 180, 183–6,
197–8, 205–6, 209, 227, 234, 239, 242,
245, 250, 252, 255, 260, 276
see also Humanitarian assistance;
Objects indispensable to the survival
of the civilian population; Starvation

Forced displacement …………………………. see Transfer
Forced labour ……………………………………. 141, 145, 183, 185, 198–9, 209, 212, 236,

239, 241–2
see also Detention; Humane treatment

Foreign intervention …………………………. 3, 30, 33, 38–40, 50, 58, 64–5, 73–7, 100,
181, 214, 253, 275–6, 321–3
see also Multinational administration
of territories; UN

Fundamental Principles …………………….. 152–3, 222, 314–16, 325
see also Principles of IHL

G
Geneva Conventions (1949) ……………… 6–7, 12, 21, 26, 29, 31–2, 35–7, 39,

47, 52–6, 59, 61–3, 66, 71, 73, 84, 106,
134–7, 144, 147, 150–2, 154–5, 164,
171–2, 174–6, 179, 181–2, 184–5, 187–8,
190, 192–4, 198, 201, 203–7, 214, 216,
222, 229, 231–2, 234–7, 239–43, 246–7,
250–1, 254, 256, 269, 272–5, 278–80,
282, 289, 291–2, 298–300, 313, 316–21,
323, 329, 331, 354
see also ICRC

Genocide …………………………………………… 258, 276, 288, 290, 296
Grave breaches ………………………………….. see War crime

338 INDEX

H
Hague Conventions …………………………… 7, 18–9, 21–2, 24, 32–3, 35, 54, 60–1, 79,

81–2, 93–4, 105, 107–10, 112–3, 120,
124, 127, 134, 154, 171, 174–5, 178, 202,
237–41, 244–6, 282–3, 286, 292, 302

– Conventions and declarations
of 1899………………………… …………………. 7, 24, 113, 120, 124, 134

– Conventions of 1907 ……………………….. 24, 32–3, 35, 54, 60–1, 79, 81–2, 134,
107–10, 112, 154, 171, 174–5, 178, 202,
237–41, 244–6, 282–3, 286

– Convention of 1954 ………………………… 21, 32, 93–4, 105, 127, 292, 302
Hors de combat ………………………………….. 20, 67, 88, 103, 106–8, 113, 118, 135–6,

162, 179, 256
see also Protected person

Hospital …………………………………………….. see Medical units
Hospital ships ……………………………………. 138, 144, 146–7, 153

see also Medical transport; Naval warfare
Hospital and safety zones
and localities……………………………………… 4, 97, 132, 149–52, 165, 243, 273, 307, 317

see also Neutralized zone; Protected area
or zone

Humane treatment ……………………………. 6-7, 17, 20, 29, 35–6, 38–9, 47, 67, 128,
136, 158, 162–3, 170–1, 175–6, 182, 188,
195–6, 202–5, 207, 209, 215, 220, 222–5,
240, 242, 247–8, 252, 256–7

Humanitarian assistance …………………… 4, 35, 96, 98, 121, 134–5, 140, 145, 201,
206, 209, 215, 220–1, 224, 227, 233, 235,
239, 250–5, 259–61, 266, 276, 299, 304,
313–5, 316, 318–22, 327–8

Humanitarian initiative, right of ……….. 12, 21, 41, 46, 150, 165, 280, 298–9, 304,
306, 316, 321–2, 329, 355
see also ICRC

Humanity ………………………………………….. 13, 16–9, 24, 56, 72, 78, 93–4, 110–1,
123, 128, 211, 256, 266, 276, 288, 290–1,
296, 314–6
see also Fundamental Principles

Human rights applicable
in armed conflicts ……………………………… 6-7, 10, 16, 25–31, 33–4, 38, 41, 44, 52,

55, 60, 70, 72, 89, 90, 100, 124, 129, 142,
177, 188–9, 191, 195, 200, 202, 205, 210,
212, 214–5, 223, 228–9, 232–3, 238, 240,
255, 258, 260, 275–6, 279, 283–4, 290–1,
294–5, 297, 304, 330

Human shield ……………………………………. 86, 90, 105, 196

INDEX 339

I
ICC …………………………………………………… 8, 25, 32, 34, 37, 112, 215, 229, 267, 277,

286, 290–3, 295–7, 325, 331
see also ICTR; ICTY; Tribunal

ICRC …………………………………………………. 5, 7–13, 20–3, 25–6, 30–1, 33–5, 41,
44, 46–7, 51–3, 57, 59–63, 65–7, 69–70,
72–3, 75, 79, 82, 87–90, 100, 111, 115,
117–8, 124, 127, 129, 133, 135, 137,
141– 2, 144, 148–50, 152–9, 161–2,
164– 6, 169–71, 177, 179, 185–7, 189,
192, 199–201, 203, 206, 211, 213, 216,
221, 224, 225–7, 229, 233, 238, 243–4,
247, 249, 252–6, 259–60, 265, 267,
270– 1, 273–4, 278–81, 285, 291–2,
298–301, 303–4, 307, 311–31, 352–55
see also Dunant, Henry; Solferino

ICTR …………………………………………………. 7, 32, 37, 57, 73, 211–2, 277, 280, 286,
290, 295–7
see also ICC; Tribunal

ICTY …………………………………………………. 7, 23–4, 26, 29, 32, 37, 57–61, 69–71,
73–4, 100, 128, 176, 222, 236, 256, 277,
280, 286, 290, 293, 295–7, 306, 325, 331
see also ICC; Tribunal

Implementation ………………………………… 5, 9, 13, 16, 21, 24, 41, 46, 54, 68, 111,
124, 166, 213, 215, 239, 263–308, 313,
327, 329

Incendiary weapon ……………………………. 8, 37, 117–8, 128
see also Conventional weapons;
Unnecessary suffering or superfluous
injury

Incidental damage …………………………….. 18–9, 29, 37, 39, 42–3, 78, 86, 90, 93, 96,
97, 100–4, 113, 118, 126, 142–3, 183,
196, 230, 273, 285
see also Collateral damage;
Proportionality

Indiscriminate attack ………………………… 39, 78, 86, 105, 111, 116
see also Distinction; Proportionality

Indiscriminate weapon ……………………… 6, 78, 111–2, 115–7, 122
see also Distinction; Proportionality;
Means of warfare

Individual responsibility
for violation ………………………………………. 5, 22, 32, 41, 45, 81, 125, 174, 182,

184, 195, 198, 205, 210, 264, 270, 283,
285–93, 305–6, 324
see also Command responsibility;
Superior order

340 INDEX

Installations containing
dangerous forces ……………………………….. see Dams, dykes and nuclear power

stations
Intensity, threshold of ……………………….. 52, 54, 57, 68–71

see also Classification of conflicts;
Organization, threshold of

Internal disturbances and tensions ……. 50–52, 68–70, 156, 322
Internally displaced person ……………….. 25, 157, 204, 221, 231–3, 242–3, 258–60,

266, 284, 290, 304, 306, 329
see also Protected person; Transfer

International armed conflict ……………… 3, 6, 13, 21–3, 28–30, 32–3, 36, 39, 50,
53–65, 70, 72, 74, 79, 81, 83, 85, 113–4,
125–7, 134–5, 149, 153, 156, 161–2,
171–3, 176–7, 190, 199, 205, 211–2, 214,
220–3, 251, 259, 282, 288–90, 298, 301,
304, 307, 313
see also Classification of armed conflicts;
Occupation

International Conference
of the Red Cross and Red Crescent ……. 23, 166, 213, 263, 265, 272, 278–81, 314,

320
see also International Red Cross and
Red Crescent Movement

International criminal law …………………. 8, 10, 16, 21, 26, 31–2, 34, 44, 69, 112–3,
120, 150–1, 172, 215, 283–4, 286–92,
295–6, 306
see also Individual responsibility
for violation; Implementation

International Federation ……………………. 7, 153–4, 278, 314, 322
see also National Societies; International
Red Cross and Red Crescent Movement

International Humanitarian
Fact-Finding Commission ………………… 298, 300–1, 327

see also Implementation
International Red Cross
and Red Crescent Movement …………….. 7, 122, 152–3, 165, 225, 278, 312–6,

320–2, 328
see also ICRC; International Federation;
National Societies

Internee …………………………………………….. 30, 38, 52, 170–1, 175, 193–214, 236
see also Detainee

Internment ……………………………………….. 4, 29, 33, 38–9, 65, 158, 169, 170–2, 175,
178–213, 220, 225, 236, 238, 247–8,
317–8, 329
see also Detention; Humane treatment

INDEX 341

Intervention ………………………………………. 3, 30, 33, 50, 58, 70, 73–5, 100, 156,
275–6, 287, 322–3
see also Foreign intervention

J
Journalist ………………………………………….. 230, 233

see also Protected person;
War correspondent

Judicial guarantees …………………………….. see Due process
Jus ad bellum ……………………………………. 27, 43–4, 54, 56, 72, 75, 89, 275

see also Use of force
Jus in bello… ………………………………………. 17, 32, 44, 56, 285

L
Laser weapon ……………………………………. 37, 110, 118, 124, 128

see also Conventional weapons;
Unnecessary suffering or superfluous
injury

Law enforcement ………………………………. 5, 13, 28, 30–2, 38, 46, 52, 54, 63, 70–1,
85, 89–90, 113, 120, 197, 263–5, 268–79,
293–308, 330
see also Police; Public order;
Implementation

Legal review of new weapons
and technologies ……………………………….. 37, 45, 52, 122–4, 271–2

see also Martens Clause; Technologies,
new; Weapon

Legal status of the parties ………………….. 53–7, 62–5, 68, 256, 305–7
see also Armed forces; Armed group;
Status

Legislation ………………………………………… 109, 153–4, 156, 162, 173, 239, 242,
246–8, 268–9, 271–2, 284, 290–1, 296,
328
see also Implementation

Levée en masse ………………………………….. 81–3, 85, 102, 171–2, 174, 178
Loss …………………………………………………… 12, 19, 33, 60, 62–3, 79, 81, 83–4, 87–8,

93–4, 97–9, 101–2, 118, 126–7, 140,
144–7, 155, 163–4, 174, 176, 222, 283

– of protection …………………………………… 25, 83–4, 87–8, 99, 140, 144–7, 163–4,
174

– of status ………………………………………….. 81, 83–4, 97–8, 126–7, 174, 176, 222
see also Status

342 INDEX

M
Martens Clause …………………………………. 24–5, 123, 128, 211

see also Humanity; Legal review of new
weapons and technologies

Means of warfare ………………………………. 3, 10, 17–9, 22, 35, 38–9, 42, 45, 51, 78,
79–80, 87, 96–7, 102, 104, 108, 109–24,
152, 265–6, 271–2, 282, 313
see also Conduct of hostilities; Method
of warfare; Weapon

Medical care… …………………………………… 13, 35, 98, 119, 121, 131, 134–7, 138–41,
153, 161, 163, 165, 170, 175, 179–80,
182–5, 196–8, 205–6, 209, 215, 229, 239,
242, 283, 304, 318

Medical ethics …………………………………… 132, 141–2, 163
Medical personnel …………………………….. 4, 34, 39, 81, 88, 102, 132–3, 136–42,

146, 152, 162–5, 171, 174, 183–4, 193,
239, 272, 302, 313
see also Protected person

Medical supplies ……………………………….. 4, 115, 186, 239, 246, 250, 252, 260
see also Humanitarian assistance

Medical transport ……………………………… 4, 103, 115, 132, 138–9, 142–9, 152–3,
162, 164–5, 272, 302
see also Civilian object

Medical unit ……………………………………… 4, 35, 43, 46, 115, 132, 138–40, 142–52,
162, 164–5, 200–1, 244, 272–3, 302, 317
see also Civilian object

Mercenary …………………………………………. see Private military and security
companies

Method of warfare …………………………….. 3, 7, 10, 17–9, 22, 35, 38–9, 45, 51,
78–80, 87, 95–7, 102, 104–11, 120,
122, 124, 152, 220, 250, 259–60, 265–6,
271–2, 282, 313
see also Conduct of hostilities; Means of
warfare

Military advantage …………………………….. 19, 86, 91–4, 96, 101–3, 110
see also Military objective;
Proportionality

Military necessity ………………………………. 16–8, 20, 28, 53, 93, 95, 98–9, 110–2,
186, 190–1, 193, 201–2, 209, 225, 236,
239, 241, 244, 247, 254, 302, 318–9
see also Humanity; Principles of IHL

Military objective ………………………………. 18, 78, 80, 86, 91–100, 102–3, 110–1,
114, 117, 127, 143, 145–6, 151
see also Distinction

INDEX 343

Militia and volunteer corps ……………….. 66, 81–2, 228
see also Armed forces; Combatant

Mine …………………………………………………. 6, 8, 21, 24, 37, 79–80, 104–5, 115–20,
128, 185, 272, 286, 308
see also Conventional weapons;
Indiscriminate weapon

Missing person ………………………………….. 4, 58, 132, 155–62, 164–5, 224–5, 306,
318
see also Dead person; Central Tracing
Agency

Montreux Document ………………………… 39–41, 81, 84–5, 91, 172, 174, 176, 190,
282, 330–1
see also Non-State actor; Private military
and security companies

Movement …………………………………………. see International Red Cross and
Red Crescent Movement

Multinational administration
of territories ………………………………………. 64–5, 75, 181, 253

see also Foreign intervention;
Occupation

N
Nationality ………………………………………… 109, 132, 140, 147, 176, 181–4,

192, 196, 199, 214, 220–2, 229–31, 234,
236, 240, 243, 256, 291, 314, 317

National Societies ……………………………… 7, 138, 142, 152–3, 156, 161, 165, 224,
254, 260, 271, 272, 278, 303, 314–5, 319,
321, 328
see also International Federation;
International Red Cross and
Red Crescent Movement

Naval warfare ……………………………………. 7, 96, 106, 134
see also Warfare

Neutralized zone ……………………………….. 97, 132, 149–51, 243
see also Demilitarized zone; Hospital
zones and localities; Protected area or
zone

Non-defended localities …………………….. 97–8, 149
see also Hospital zones and localities

Non-detectable fragments …………………. 8, 110, 113–4, 128
see also Conventional weapons;
Unnecessary suffering or superfluous
injury

Non-governmental organization ……….. 9, 89, 120, 165, 303–4, 314, 353

344 INDEX

Non-international armed conflict ……… 13, 21–3, 29–30, 33, 36, 44, 50, 53–4,
56–7, 66–75, 78, 82–4, 114, 125–9, 132,
156, 161–6, 170–2, 205, 208–16, 220–1,
255–60, 264, 285, 290, 294–5, 299, 301,
304–8, 313, 329
see also Classification of conflicts;
Intensity, threshold of; Organization,
threshold of

Non-refoulement ………………………………. 181, 204, 207, 214, 235
see also Refugee
Non-State actor …………………………………. 89, 256, 305, 328

see also Armed group; Private military
and security companies

Nuclear weapon ………………………………… 36, 38, 110–2, 121–4, 294, 297
see also Environment; Unnecessary
suffering or superfluous injury; Weapon

O
Objects indispensable to the survival
of the civilian population ………………….. 95–6, 98, 125, 127, 221, 238, 250–3, 260,

302
see also Civilian object; Environment;
Food; Water

Occupation ……………………………………….. 36, 50-1, 55, 56–7, 60–5, 100, 143, 157,
176, 194, 206, 207, 222, 237–50, 266,
317, 324
see also International armed conflict;
Multinational administration of
territories

Organization, threshold of ………………… 69
see also Classification of armed conflicts;
Intensity, threshold of

Organized, armed group …………………… 30, 36, 39, 50, 53, 66, 68–70, 74–5,
125–7, 208, 210, 215, 227, 255–6, 305,
307–8, 323
see also Armed group

P
Perfidy ………………………………………………. 106, 108–9, 114–5, 145, 154, 290

see also Emblem; Method of warfare;
Protected person

Pillage ……………………………………………….. 132, 136, 159, 163, 223, 244, 246, 257,
290
see also Property

INDEX 345

Poison ……………………………………………….. 7, 35, 96, 112, 128
see also Asphyxiating, poisonous or
other gases; Biological or bacteriological
weapon; Chemical weapon

Police ………………………………………………… 82, 208, 281
see also Law enforcement; Public order

Precautions against
the effects of attacks ………………………….. 18–9, 43, 78, 86, 94–6, 100–4, 107,

114, 116, 118, 120, 122, 126, 180, 205,
242, 273
see also Conduct of hostilities; Principles
of IHL

Presumption ……………………………………… 78, 100–4
see also Status

Prevention (of IHL violations) …………… 154, 227, 328, 331
see also Implementation; Training

Principles of IHL ………………………………. 9, 16–21, 23, 28, 37, 43, 72, 79, 86, 89,
110, 114, 121, 123, 128, 222, 247, 271,
282, 290, 323, 352

Prisoner of war ………………………………….. 7, 32, 35, 36, 52, 106, 140, 143, 158,
161–2, 170–89, 194, 196, 198, 201, 214,
228, 266, 299, 313, 316–9
see also Combatant; Detention; Status

Private military
and security companies …………………….. 40–1, 47, 282, 330

see also Montreux Document; Non-State
actor

Procedural safeguards ……………………….. 171, 178, 191, 210–3, 216, 271, 329
see also Due process

Property ……………………………………………. 7, 21, 28, 65, 79, 93–4, 100, 103, 105,
109, 127, 198–200, 208, 221, 234, 236,
240, 244–8, 272, 286, 289, 295, 302, 306
see also Cultural property; Destruction;
Pillage

Proportionality………………………………….. 19, 43, 78, 86, 92–3, 96, 100–3, 110–1,
114, 122, 126, 142, 290, 303
see also Principles of IHL; Conduct of
hostilities

Protected area or zone ………………………. 151
see also Demilitarized zone; Hospital
zones and localities; Neutralized zone

346 INDEX

Protected person ……………………………….. 18, 43, 52, 58, 84, 87, 89–90, 98–9, 100–1,
105, 107–8, 132, 134–7, 139–43, 145,
149, 152, 158, 159, 161, 163–4, 170–2,
175–6, 181–3, 190–207, 214, 222–7,
230–1, 233, 235–6, 238–43, 249, 252,
254, 268, 289, 299–300, 316–20, 323,
325–6

Protecting Power ………………………………. 137, 150, 157, 161, 186–8, 191–3, 199,
201–4, 206, 224, 229, 235, 242, 247,
251–2, 254, 298–9, 301, 305, 316–20
see also Implementation

Public order ………………………………………. 220, 238,
see also Law enforcement; Police; Use of
force

Q
Qualification of conflicts …………………… see Classification of conflicts
Quarter, denial of………………………………. 106–8, 114, 125, 290

see also Capture; Hors de combat;
Method of warfare

R
Rape ………………………………………………….. 171, 226–7, 237, 257–8

see also Violation
Reciprocity (Non-) ……………………………. 17, 22, 39, 86, 266–8

see also Equality of belligerents
Recognition of belligerence ……………….. 27, 52–3, 68, 193, 214, 240, 305

see also International armed conflict
Red Cross and
Red Crescent Societies ………………………. see National Societies
Red Cross, Red Crescent,
Red Crystal ……………………………………….. see Emblem
Refugee……………………………………………… 181, 231–3, 240, 249, 276, 284

see also Protected person;
Non-refoulement

Relief…………………………………………………. see Humanitarian assistance
Religious personnel …………………………… 81, 88, 98, 132, 137–42, 146,

152, 162–4, 171, 174, 184, 302
Remnant of war ………………………………… see Explosive remnant of war
Reparation ………………………………………… 25, 57, 264, 281–4, 286, 294, 305, 329

see also Implementation; State
responsibility

Repatriation ………………………………………. 136, 160–1, 179–81, 186, 194–5, 200,
207, 234–5, 318
see also End of hostilities; Family
reunification

INDEX 347

Reprisals ……………………………………………. 17, 86, 91, 95-6, 127, 182, 196, 223, 268,
298–306
see also Reciprocity (Non-); Violation

Ruse of war ……………………………………….. 108–9
see also Method of warfare

S
Sabotage ……………………………………………. 191, 202, 248

see also Espionage; Destruction
Sanction ……………………………………………. 31–2, 183, 187–8, 197, 203, 210, 239,

248, 267, 269-70, 276–7, 285, 288
see also Individual responsibility for
violation; Command responsibility

Self-defence ………………………………………. 17, 27–8, 38, 99, 121, 266, 289
see also Jus ad bellum; Use of force

Shipwrecked ……………………………………… 7, 36, 97, 106, 132–49, 158, 161–3, 302,
313
see also Naval warfare

Slavery ………………………………………………. 29, 227, 237, 257
see also Forced labour

Solferino……………………………………………. 35, 47, 133–4, 139, 313
see also Dunant, Henry; International
Red Cross and Red Crescent Movement

Special agreement ……………………………… 68, 184, 198, 211, 241, 300, 306–8
see also Agreement

Starvation………………………………………….. 95–6, 105, 220–1, 250, 259
see also Method of warfare;
Objects indispensable to the survival
of the civilian population

Stateless …………………………………………….. 231
State responsibility…………………………….. 41, 57, 75, 195, 264–5, 281–5, 308

see also Reparation; Sanction
Status ………………………………………………… 20–3, 29, 35, 38–40, 52–8, 62–4, 68,

81–5, 92, 97–8, 102, 108, 126–7, 134–5,
139–40, 145, 148, 151–3, 162, 170,
171–9, 185, 188, 190, 195, 200, 207–9,
215, 220, 222, 226, 230–2, 239–41, 249,
256, 304–5, 307, 312–6
see also Loss of status

Superior order …………………………………… 288, 292
see also Command responsibility;
Individual responsibility for violation

348 INDEX

T
Tallinn Manual ………………………………….. 44, 124

see also Cyber warfare
Targeting …………………………………………… 9, 39, 42, 45, 51, 78, 92, 100–1, 289, 330

see also Distinction; Military objective;
Direct participation in hostilities

Technologies, new …………………………….. 10, 42, 45, 47, 122–4, 225
see also Legal review of new weapons
and technologies

Terror ……………………………………………….. 9, 37–8, 46–7, 85, 105, 126, 189
see also Method of warfare; War on
terror

Terrorism ………………………………………….. 10, 37–8, 42, 72, 172, 177, 196, 223, 257
Textboxes
1. The ICRC study on customary

international humanitarian law ……….. 23
2. ICRC expert meeting on IHL

and the use of force
in armed conflicts ……………………………. 30

3. The Montreux Document ………………… 41
4. Tallinn Manual on the

International Law Applicable
to Cyber Warfare …………………………….. 44

5. ICRC process to clarify
the concept of “direct participation
in hostilities” …………………………………… 89

6. National Information Bureaux
and the Central Tracing Agency ……..161

7. The Health Care in Danger project …165
8. Procedural safeguards

for internment/administrative
detention ………………………………………..213

9. Swiss/ICRC initiative
on strengthening
the implementation of IHL …………….280

Torture ……………………………………………… 6, 29, 38, 67, 137, 142, 171, 181, 189,
195, 214, 223, 257, 267, 269, 284, 290,
292
see also Detention; Humane treatment

Tracing ……………………………………………… see Central Tracing Agency
Training…………………………………………….. 12, 40–1, 49, 52, 69, 74, 185, 236, 242,

269, 270–3, 328, 352, 355
see also Implementation; Prevention
(of IHL violations)

INDEX 349

Transfer …………………………………………….. 6, 38, 63, 116, 118, 120, 157-8, 161, 179,
180–2, 185, 195, 200–1, 204, 207, 214,
233–5, 242–3, 246, 258–60, 290, 318
see also Forced displacement

Treaties ……………………………………………… 8, 12, 21–9, 36–8, 43, 51–61, 66, 72, 101,
106–12, 114, 117–8, 120, 122–7, 133–5,
144, 147, 150, 156, 178, 181, 201–2,
211–2, 214, 232–3, 235, 238, 251–2, 256,
259, 268–9, 271–2, 274–5, 281, 283–4,
286, 290–2, 294, 296, 302–3, 305–7, 312,
316, 319–20, 322, 329, 354
see also Customary international
humanitarian law; Geneva
Conventions (1949)

Tribunal ……………………………………………. 6–8, 22, 25, 31–2, 34, 37, 64, 67, 70, 124,
137, 178, 187–91, 201, 203, 207, 210,
212, 229, 234, 239, 247–9, 257, 267, 277,
283–91, 293–7, 301, 305, 325
see also ICTR; ICTY; ICC

U
UN ……………………………………………………. 7, 8, 16, 25–7, 32–4, 36, 38, 55, 62, 64–5,

69–70, 75, 89, 91, 100, 108–9, 113, 117,
120, 151–2, 221, 232, 236, 253, 255,
261, 271, 274–81, 283–5, 292–3, 296–7,
299–300, 304, 308, 314
see also Foreign intervention;
Multinational administration of
territories; Implementation

Unexploded ordnance ……………………….. see Explosive remnant of war
Uniform ……………………………………………. 70, 82, 106, 108–9, 190, 266, 289

see also Status
Universality ………………………………………. 315

see also Fundamental Principles
Universal jurisdiction ……………………….. 31–2, 249, 291–3

see also Breaches of IHL; Violation;
War crime

Unlawful and unprivileged
combatant …………………………………………. 38, 83–5, 88, 90, 126, 172–3, 177

see also Combatant; Presumption; Status
Unnecessary suffering
or superfluous injury …………………………. 19–20, 22, 37, 78, 109–14, 116, 118, 123,

128, 134
see also Humanity; Military necessity

350 INDEX

Use of force ……………………………………….. 10, 27, 30–1, 44, 52, 54, 69, 70, 89–90,
151, 275, 277, 289
see also Jus ad bellum

V
Violation …………………………………………… 17, 25, 31–2, 45, 52, 81–2, 86, 90, 94,

145, 150, 172, 232, 243, 264–7, 269–70,
273–80, 282–96, 300–6, 312, 318, 323–8
see also Individual responsibility for
violation; Crimes against humanity;
Genocide; Prevention (of IHL
violations); State responsibility;
War crime

Violence, threshold of ……………………….. see Intensity, threshold of

W
War correspondent ……………………………. 85, 174, 230

see also Journalist
War crime …………………………………………. 31–2, 34, 52, 62, 112–3, 145, 154, 209,

215, 264, 269, 271, 273, 276, 285–92,
296, 300, 306
see also Breaches of IHL

Warfare ……………………………………………… 7, 9–10, 17–9, 22, 34–5, 38–9, 42–4, 47,
51, 78–80, 87, 95–7, 102–13, 120–4,
152, 171, 177, 220, 230, 244, 250, 260,
265–6, 271–2, 282, 313, 323
see also Means of warfare; Method of
warfare

Warning ……………………………………………. 94, 98, 99, 103, 105, 107, 114, 120, 145,
147, 164, 184, 280, 302
see also Precautions against the effects of
attacks

War on terror ……………………………………. 37–8, 46–7, 189
see also Classification of conflicts;
Terrorism

Water ………………………………………………… 32, 95, 100, 112, 115, 135, 146, 148, 180,
183, 197, 205, 209, 242
see also Environment; Food; Objects
indispensable to the survival of the
civilian population

INDEX 351

Weapon …………………………………………….. 6, 8–10, 19, 21–2, 24, 29, 34, 37, 40, 42,
45–6, 52, 66, 69–70, 78, 81, 92, 97, 99,
104, 106, 108–24, 128, 144–6, 178, 184,
215, 226, 245, 247, 271–2, 282, 290, 294,
297, 302
see also Conventional weapons; Means
of warfare

Work, compulsory …………………………….. see Forced labour
Women ……………………………………………… 12, 191, 194, 196, 206, 209, 211, 226–7

see also Protected person
Works and installations
containing dangerous forces ……………… see Dams dykes and nuclear

power stations
Wounded and sick …………………………….. 7, 13, 34–6, 42, 53, 59, 67, 79, 97, 106–7,

115, 131–66, 175, 180, 194, 209, 244,
302, 307, 313–4
see also Medical care; Protected person

352 REFERENCES

References

ICRC LEARNING TOOLS AND PUBLICATIONS

The following tools and publications allow readers to learn about IHL in
“four steps,” each of them adapted to the specific interests, level of knowledge
and learning needs of various target groups.

1. E-learning course:
Introduction to International Humanitarian Law (IHL)

An introduction to the basics of IHL for non-specialists (eight modules), the
course is currently available in French, Spanish and English on the ICRC’s
“Online Learning Centre” webpage, along with other thematic e-modules.

• E-learning course: https://www.icrc.org/en/online-training-centre

2. IHL textbook: International Humanitarian Law:
A Comprehensive Introduction

This is a comprehensive introductory textbook on IHL written in concise
and clear language. Its value and usefulness lie in its distinctive combination
of “In a nutshell” sections providing key IHL rules at the beginning of each
chapter, “To go further” sections offering a variety of thematic references
and “Textboxes” providing details on contemporary humanitarian issues
and IHL projects. It is intended for students, teachers and scholars interested
in IHL, but may also prove useful to lawyers and military and humanitar-
ian personnel looking for a comprehensive overview of contemporary IHL,
from the ICRC’s perspective.

• IHL textbook: https://shop.icrc.org/

3. IHL casebook: How Does Law Protect in War?
This selection of nearly 300 case studies provides university professors, legal
and humanitarian personnel, and students with the most up-to-date and
comprehensive selection of documents on IHL now available. It presents
fundamental, contemporary legal issues relating to armed conflict and con-
tains a series of outlines for professors setting up introductory or advanced
IHL courses. It is available in English and French, and as a regularly updated
and fully navigable online database.

REFERENCES 353

• IHL casebook (PDF and paper): https://www.icrc.org/eng/
resources/documents/publication/p0739.htm

• IHL casebook (online database): https://www.icrc.org/casebook/

4. IHL journal: The International Review of the Red Cross
Established in 1869, the International Review of the Red Cross is a quarterly
journal published by the ICRC and Cambridge University Press. It is a forum
for debate on IHL and on humanitarian action and policy as they relate
to armed conflicts and other situations of violence. The target groups are
governments, international governmental and non-governmental organiza-
tions, universities, the media and everyone else who is interested in humani-
tarian issues. Because of the broad range of perspectives it offers, in several
languages, the Review is particularly helpful for teachers and researchers.

• IHL journal: https://www.icrc.org/eng/resources/international-
review/index.jsp

354 REFERENCES

ICRC DATABASES

The following databases provide official legal sources for established lawyers,
military and humanitarian personnel, and academics wishing to supplement
their work, research and studies with references to the relevant provisions of
IHL treaties, customary rules and national legislation.

Online database: Treaties, States Parties and Commentaries
The database of treaties, States Parties and commentaries contains about 100
IHL instruments, dating from 1856 to the present. The treaties, documents
and updated commentaries to the Geneva Conventions (2016 onward)
are grouped in current and historical sections and arranged by topic and
by date. Outdated texts, such as the Geneva Convention of 1864, are also
included, in view of their historical value. Readers can view each text in full
(PDF in the right-hand column) or by article.

• Treaties, States Parties and Commentaries online database:
http://www.icrc.org/ihl

Online database: Customary IHL
This database is the updated version of the ICRC study on customary inter-
national humanitarian law originally published by Cambridge University
Press. Also available in Arabic, Chinese, French, Russian and Spanish, the
first part presents an analysis of existing rules of customary IHL. The second
part contains the practice underpinning the rules analysed in Part 1 and is
updated on a regular basis by the ICRC, in cooperation with the British Red
Cross. The most recent update integrates national practice (highlighted in
green) for two countries.

• Customary IHL online database:
https://www.icrc.org/customary-ihl/eng/docs/home

Online database: IHL national implementation
The ICRC set up this database to share the information it has collected on
national implementing measures. The content of the database – legislation
and case-law – is drawn from information collected by the ICRC Advisory
Service on International Humanitarian Law and sent to it by States. The
database may not be exhaustive, but it provides a comprehensive overview
of IHL implementing measures taken by all States.

• IHL national implementation database:
https://www.icrc.org/ihl-nat

REFERENCES 355

ICRC NEWSLETTERS

ICRC newsletters provide regular information on ICRC humanitarian law
and policy initiatives, and on the organization’s humanitarian operations
worldwide.

ICRC Law and Policy Newsletter
This bi-monthly electronic newsletter features updates on the latest devel-
opments relating to humanitarian law and policy, such as learning tools,
events, training, podcasts, publications, and much more. It also provides the
latest updates from the ICRC’s Humanitarian Law and Policy blog.

• Law and Policy Newsletter: https://www.icrc.org/en/law-and-poli-
cy-newsletters

ICRC Newsletter
This newsletter, aimed at the general reader, provides regular updates on the
ICRC’s humanitarian activities throughout the world.

• ICRC Newsletter: www.icrc.org

MISSION
The International Committee of the Red Cross (ICRC) is an
impartial, neutral and independent organization whose
exclusively humanitarian mission is to protect the lives and
dignity of victims of armed conflict and other situations
of violence and to provide them with assistance. The ICRC
also endeavours to prevent suffering by promoting and
strengthening humanitarian law and universal humanitarian
principles. Established in 1863, the ICRC is at the origin of
the Geneva Conventions and the International Red Cross
and Red  Crescent Movement. It directs and coordinates
the international activities conducted by the Movement in
armed conflicts and other situations of violence.

IN
T

E
R

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International Humanitarian Law: A Comprehensive Introduction is an intro-
ductory textbook that aims to promote and strengthen knowledge of IHL
among academics, weapon-bearers, humanitarian and media professionals.
It presents contemporary issues related to IHL in an accessible, practical and
comprehensive manner, and in line with the ICRC’s reading of the law. Its
distinctive format and style make it the ideal everyday companion for anyone
approaching IHL for the first time and curious about conflict-related matters,
as well as military and humanitarian personnel seeking useful guidance on a
vast array of topics.

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  • Acronyms and abbreviated titles
  • Foreword
  • Introduction
  • Chapter 1
    • Introduction to IHL
      • I. Definition and core principles of IHL
      • II. Sources of IHL
      • III. IHL in the international legal order
      • IV. A brief history of IHL and some contemporary challenges
  • Chapter 2
    • Scope of application of IHL
      • I. Relevance and definition of the term “armed conflict”
      • II. Distinction between international and non-international armed conflict
      • III. International armed conflicts
      • IV. Belligerent occupation
      • V. Non-international armed conflicts
      • VI. Armed conflicts subject to foreign intervention
  • Chapter 3
    • The conduct of hostilities
      • I. Protection of the civilian population
      • II. Protection of civilian objects, and of certain areas and institutions
      • III. Proportionality, precautions and presumptions
      • IV. Methods of warfare
      • V. Means of warfare
      • VI. Specific issues arising in non-international armed conflicts
  • Chapter 4
    • The wounded and sick and the medical mission
      • I. The wounded, the sick and the shipwrecked
      • II. Medical and religious personnel
      • III. Medical units and transports
      • IV. Hospital, safety and neutralized zones
      • V. The distinctive emblems
      • VI. The missing and the dead
      • VII. �Specific issues arising in non-international armed conflicts
  • Chapter 5
    • Detention and internment
      • I. The relevance of “status” in the context of detention
        • II. Internment of prisoners of war
        • III. Internment and detention of civilians
        • IV. Specific issues arising
          in non-international armed conflicts
  • Chapter 6
    • Civilians in enemy-controlled territory
      • I. General protection of civilians in the power of the enemy
      • II. Enemy nationals in the territory of a belligerent party
      • III. Inhabitants of occupied territories
      • IV. Humanitarian assistance
      • V. Specific issues arising in non-international armed conflicts
  • Chapter 7
    • Implementation and enforcement of IHL
      • I. Factors influencing compliance with IHL
      • II. Duty of belligerents “to respect and to ensure respect”
      • III. Ensuring respect at international level
      • IV. State responsibility and reparations
      • V. �Individual criminal responsibility for violations of IHL
      • VI. Judicial enforcement
      • VII. Non-judicial enforcement
      • VIII. �Specific issues arising in non-international armed conflicts
  • Chapter 8
    • The special role of the ICRC
      • I. Purpose and status of the ICRC
      • II. Legal basis for ICRC action
      • III. The ICRC as the “guardian of IHL”
  • Index
  • References
    • ICRC learning tools and publications
    • ICRC databases
    • ICRC newsletters

ROUNDTABLE: THE ETHICS OF LIMITED STRIKES

Limited Force and the Return of
Reprisals in the Law of Armed
Conflict
Eric A. Heinze and Rhiannon Neilsen

I
t is widely acknowledged that armed reprisals—the limited use of military

force by a state in response to a prior illegal action perpetrated against

that state—were formally banned by the UN Charter in . Despite

this, states have routinely engaged in the practice and continue to do so today,

often with little opposition from the international community. On April ,

, for example, the United States, the United Kingdom, and France launched

more than one hundred missiles at Syrian chemical weapons facilities in response

to the use of chemical weapons by Bashar al-Assad’s regime against civilians in the

city of Douma. While these airstrikes are more appropriately characterized as

“third-party reprisals,” since those undertaking the reprisals were not the actual

victims of the wrongful actions in question, it is noteworthy that only a very

small minority of the over seventy states that expressed a view claimed that

these strikes violated international law (including, unsurprisingly, Syria, Iran,

and Russia). Likewise, on February , , India undertook airstrikes against

a terrorist training camp located in Pakistan in reprisal for a suicide attack that

killed approximately forty Indian soldiers in Indian-administered Kashmir almost

a week earlier. Beyond increased tensions and calls for restraint, this, too, gar-

nered little international condemnation.

The advent and proliferation of cyber capabilities has arguably created further

incentive for reprisals, as state and nonstate actors acquire the ability to undertake

cyber operations that, legally speaking, may rise to the level of a use of force or

even an “armed attack,” which would give rise to the right of self-defense under

Ethics & International Affairs, , no.  (), pp. –.
© The Author(s), . Published by Cambridge University Press on behalf of the Carnegie Council for Ethics in
International Affairs
doi:./S

175

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Article  of the UN Charter. Indeed, on May , , the Israeli Defense Forces

destroyed a building in which they alleged Hamas was poised to launch cyberat-

tacks on Israel—therein constituting the first time that a state has conducted a

kinetic military operation directly in response to an imminent malicious cyber

operation. This illustrates what might be called “cross domain reprisals,” whereby

an actor resorts to the use of kinetic force in a reprisal against a hostile cyber oper-

ation, or vice versa. Such a cross-domain reprisal was again demonstrated by the

United States in response to Iran downing a U.S. surveillance drone and alleged

attacks on oil tankers near the Strait of Hormuz on June , . In this case, the

United States opted to conduct cyber operations aimed at disabling Iranian intelli-

gence facilities and missile launch systems, precisely because such operations were

intended to fall below what would constitute an armed attack. Lastly, and most

recently, on January , , the United States killed top Iranian general Qasem

Soleimani, as well as nine other Tehran-backed militia officials, at Baghdad

International Airport via a drone strike. While the legality of the strike is still

being debated, the immediate international response from states and the United

Nations has largely been one of alarm, with fears that the “assassination of

Soleimani could ignite serious escalation in the region and possibly lead to war.”

The purpose of this essay is to examine the international law of reprisals in light of

these and other instances of states resorting to military measures short of war more

generally, paying particular attention to recent developments in the rules governing

hostile cyber operations. The first section examines reprisals in international lawand

suggests that the ban on reprisals was perhaps never as absolute as some believe. The

next section examines the developments in the rules of hostile cyber operations and

recent trends in state practice, and suggests that these may be further weakening the

ban on reprisals. We conclude with a discussion of the dangers that eroding this ban

may present, especially in an era of increasing weaponization of cyber capabilities.

The Ban on Reprisals

The contemporary doctrine of armed reprisals has its origins in the ancient practice

of “private reprisals.” During the Middle Ages, private individuals were empowered

by “letters of marque and reprisal” to undertake acts of self-help against foreign

states or their citizens as a means to recover damages incurred by some wrongful

act perpetrated by those parties. By the end of the seventeenth century, with

the increasing role of the state and the rise of state responsibility, private reprisals

176 Eric A. Heinze and Rhiannon Neilsen

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were generally tolerated less, while public reprisals emerged as an important means

of self-help, short of war, for states to address and deter wrongful acts conducted

against them. Further, throughout the eighteenth and nineteenth centuries, since

the right of states to use force was generally understood to be fairly unlimited, it

was thought that the right to armed reprisals was also unlimited. This led some

commentators to conclude that there was little basis to distinguish between war

and reprisals, as their legality was not in question—at least not until the emergence

of rules that placed limitations on the resort to force.

While the League of Nations era (–) succeeded in placing certain lim-

itations on states’ ability to resort to force, it was during this period that the first

coherent doctrine of reprisals emerged. The so-called Naulilaa Arbitration

between Portugal and Germany, which originated from a  incident involving

a German reprisal against Portuguese military positions in present-day Angola, is

understood to have established the customary criteria for lawful armed reprisals of

the time. These were: () There must have been a prior violation of international

law by the target state against the claimant state; () there must have been an

attempt by the claimant state to obtain reparation or redress for the alleged

wrong by peaceful means (and such an attempt must have failed or been inappro-

priate for the circumstances); and () the force used in the reprisal must have been

proportionate to the original harm done by the target state.

Although it appears reprisals were not entirely forbidden during the League of

Nations period, the UN Charter definitively banned the practice in international

law in . Under Charter rules, states are prohibited from using force (Article 

[]) unless it is either part of a UN-authorized enforcement operation or at the

invitation of the state in question, or if they are acting in self-defense against

an “armed attack” under the authority of Article  of the Charter. However,

not all uses of force rise to the level of an armed attack; “only the most grave

uses of force” are grounds for invoking the right to self-defense, whereas lower-

level military actions that do not meet the “scale and severity” threshold of an

armed attack are not legal grounds for resorting to self-defensive force. So,

even if a state is the victim of the unlawful use of force, if that use of force

does not rise to the level of what is considered an armed attack, the victim

state may not respond in kind with proportionate force. Such an act would be con-

sidered an unlawful reprisal, or a “forcible countermeasure.” This interpretation of

the Charter is supported by numerous UN documents, resolutions by UN bodies,

expert opinions, and opinions of international tribunals.

limited force and the return of reprisals in the law of armed conflict 177

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However, as early as the s and s, a pattern began to emerge in the con-

ditions under which the UN Security Council was willing to condemn certain

instances of reprisals. In essence, those reprisals receiving criticism by the

Council were denounced on the basis of their disproportionality, targeting of civil-

ian assets, or the observation that they primarily served a punitive vs. deterrent

function. Scholars such as Derek Bowett observed that some reprisals were

more readily condemned by the Council during this period than others, suggest-

ing that it was not the reprisals themselves that were drawing condemnation, but

the fact that some did not meet the criteria for what members of the Council

believed was acceptable. While certainly driven by prevailing political realities

of the time, Bowett nevertheless saw international law evolving in such a way

that “reprisals remain illegal de jure, [but] become accepted de facto,” at least if

they met certain criteria.

Bowett and other skeptics of the ban on reprisals advanced their claims in the

context of a UN collective security system that had been unable to consistently and

effectively enforce a system of collective judgment and enforcement, causing states

to rely on self-help more than the framers of this system had intended. As is well

known, the UN Charter originally envisaged the right of states to use force in self-

defense under Article  as a temporary measure available only to the victim state

until the collective security mechanisms of the UN could be activated, and a mul-

tilateral force could be dispatched. Relatedly, collective enforcement under

Chapter VII of the Charter was supposed to be implemented according to

Article , which commits all UN member states to make their armed forces

and military facilities available to the UN Security Council “on its call” to main-

tain international peace and security. Needless to say, this is not how the lawful

practice of self-defense occurs today. Rather, self-defense remains the purview of

states, while collective enforcement under Chapter VII relies on states voluntarily

acting on behalf of the UN. Since the Council is not able to consistently and effec-

tively enforce these elements of the collective security system, states have unsur-

prisingly resorted to self-help, including reprisals.

The International Court of Justice (ICJ) has also suggested certain qualifications

in the ban on reprisals. In the Military and Paramilitary Activities in and Against

Nicaragua case (Nicaragua v. United States of America) ()—which is often

cited as evidence in support of the ban on reprisals—the United States argued

that its use of force against Nicaragua was an act of collective self-defense primar-

ily on behalf of El Salvador, which had been attacked by insurgents who were

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supposedly armed and equipped by Nicaragua. However, the court concluded that

uses of force that do not amount to an armed attack (in this instance, Nicaragua’s

alleged assistance to Salvadorian insurgents) do not sanction collective measures

involving the use of force, but only permit nonforcible countermeasures on the

part of the victim state. In this case, therefore, the use of force by the United

States against Nicaragua on behalf of other states was illegal. The court explicitly

ruled that “States do not have a right of ‘collective’ armed response to acts which

do not constitute an ‘armed attack.’” Yet, it is not clear whether the court was

saying that the United States acted illegally because forcible reprisals are illegal,

or because the United States was not itself the victim of an unlawful act by

Nicaragua, and therefore had no right to act on behalf of the victim state.

Describing this ambiguity, Tom Ruys claims that “it is rather flabbergasting that

the Court flags a crucial potential gap in the rules on the use of force, which

would seem to be prima facie” at a disjuncture with the existing international

laws on use of force and self-defense.

The more recent Oil Platforms case (Islamic Republic of Iran v. United States of

America) (), however, leaves open the question of whether armed reprisals

may ever be lawful. In this case, the court refused to address whether the

United States acted lawfully when it attacked three Iranian oil platforms in

response to an Iranian naval mine severely damaging a U.S. Navy ship, thus miss-

ing an opportunity to settle the legal status of reprisals in international law. In a

separate opinion, Justice Bruno Simma left the door open for reprisals, interpret-

ing the ruling in Nicaragua as limiting the collective use of force, such that self-

defense may be undertaken individually or collectively, whereas reprisals may

only be undertaken by the victim state alone. He thus concluded that in response

to lower-level hostile actions, such as the naval mines deployed by Iran, states

would be entitled to undertake “proportionate countermeasures.” Simma argued

that the court in Nicaragua could not have understood this to mean “mere pacific

reprisals,” but should have rather interpreted it as “defensive military action ‘short

of’ full-scale self-defense”—that is, armed reprisals.

In short, states’ interpretation of and commitment to the illegitimacy and ille-

gality of reprisals is not as concrete as once thought. Nevertheless, the increasingly

permissive international climate pertaining to reprisals has also been facilitated by

the rules, attitudes, and activities undertaken in what is now considered to be the

fifth domain of war. Cyberspace, as a new avenue through which states and non-

state actors alike can conduct hostile operations, is influencing the return of

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reprisals in a profound way, in terms of both the rules applicable to cyberspace

and the state conduct pertaining to cyber operations in recent years. At the

core of this apparent erosion are the Tallinn Manuals.

Developments in the Rules and Attitudes regarding

Hostile Cyber Operations

Responding to an increase in malicious cyber activities, the NATO Cooperative

Cyber Defence Centre of Excellence invited a group of international legal experts

(hereafter referred to as the “experts”) to shed light on how cyber operations ought

to comply with international law. The final outputs—known as the Tallinn

Manual () and Tallinn Manual . ()—are the most internationally

renowned sources on international law applicable to cyber warfare and cyber

operations, respectively. The Tallinn Manuals are not in themselves legally bind-

ing, but rather constitute “an expression of the opinion of the two International

Groups of Experts as to the state of the law.” Of course, there are also a huge

number of other excellent works that examine cyber operations in light of the

laws and ethics of armed conflict. However, the Tallinn Manuals boast the

insights of legal experts from countries around the world (including, to name a

few, Belarus, China, Israel, Thailand, and the United States), in areas ranging

from human rights law to space law, and with observers from nongovernmental

organizations such as the International Committee of the Red Cross. Given

the sheer breadth of expert insight and legal peer review in considering the law

applicable to cyberspace, the findings of the two Tallinn Manuals are thus deserv-

ing of attention.

A pillar of both of the Tallinn Manuals is that, for the purposes of determining

whether an act qualifies as a “use of force” or an “armed attack,” they do not make

a distinction between a malicious cyber operation or a kinetic operation, so long as

the “scale and effects” are comparable. This is in accord with the ICJ’s under-

standing of international customary law pertaining to “any use of force, regardless

of the weapons employed.” What matters in the cyber context, according to the

Tallinn Manual ., “is not the instrument used that determines whether the use

of force threshold has been crossed, but rather . . . the consequences of the oper-

ation and its surrounding circumstances.” Therefore, if a state falls victim to a

cyber operation that qualifies as an armed attack, that state can lawfully resort

to (collective or individual, cyber or kinetic) self-defense measures pursuant to

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Article . What the Tallinn Manual . fails to make clear in any certain terms,

however, is what a state may lawfully do if it is affected by a cyberattack that falls

short of qualifying as an armed attack.

Addressing countermeasures specifically, all of the experts contributing to the

Tallinn Manual . maintain that, as per international customary law, countermea-

sures (cyber or otherwise) must not rise to the level of an armed attack. However,

the experts then become divided over whether a countermeasure that crosses the use

of force threshold, but does not reach the level of an armed attack, would be consid-

ered lawful. Most of the experts purportedly reaffirmed the conventional view that

the “injuredstate” is not permitted to respond to thewrongful actperpetrated against

it with a use of force. The victim state would be entitled to impose countermeasures

against the offending state in such a way that suspends its legal obligations to that

state, but only to the end of inducing the offending state to re-comply with its

legal obligations. Under no circumstances, according to the conventional view,

is the injured state permitted to resort to even a proportionate use of force. As

such, most of the experts writing for the Tallinn Manual . maintain that there is

an obligation on the part of the injured state to refrain from using “forcible

countermeasures,” cyber or otherwise. The Tallinn Manual . explicitly notes that

this view thereby replicates Article () of the Articles on State Responsibility

and maintains the jurisprudence of the International Court of Justice.

A small number of the Tallinn Manual experts, on the other hand, adopt the view

that an injured state could resort to “forcible countermeasures,” cyber or otherwise,

in response to a wrongful use of force, so long as those forcible countermeasures sat-

isfy attendant international legal obligations. According to the Tallinn Manual

., the experts’ reasoning was hinged on the logic that an injured state would be

otherwise denied of a proportionate response by being restricted to measures that

necessarily fall below the use of force. Indeed, these experts (who, again, represent

only a minority) took their lead from Justice Simma’s separate opinion pertaining to

the Oil Platforms case, and explicitly cited this as influencing their view.

As a consequence of this disagreement and division, the Tallinn Manual .

provides “no such limitation”—that is, the obligation of injured states to refrain

from using forcible countermeasures—in its rules on countermeasures.

Whereas existing international law holds fast on the view that countermeasures

must not entail the use of force, recent developments in the view of international

law applicable to cyberspace leave this open for debate. In other words, because

the experts failed to agree, the Tallinn Manual . does not explicitly outline

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whether a forcible countermeasure, cyber or otherwise, in response to an initial

use of force, would be considered unlawful. By deciding to refrain from including

such a limitation, the Tallinn Manual . thus fails to clearly rearticulate and

recommit to a hard ban on countermeasures that rise to the level of a use of

force—in other words, the ban on reprisals.

This point of contention is particularly concerning because, by the experts’ own

reasoning, there is no distinction between cyber or kinetic operations, as long as

the scale and severity are commensurate to the extent to which the act can be

regarded as a “use of force” or an “armed attack.” As such, states might feel at lib-

erty to interpret the Tallinn Manual .’s leniency as permitting both cyber and

noncyber forcible countermeasures in response to both cyber and noncyber uses

of force. This problematically paves the way for states to respond to cyber uses

of force with traditional kinetic uses of force.

An example of this, noted earlier, is the decision by the Israel Defense Forces

(IDF) to airstrike a building where a Hamas cyber operation was allegedly under-

way. In May , the IDF’s official Twitter account tweeted, “CLEARED FOR

RELEASE: We thwarted an attempted Hamas cyber offensive against Israeli tar-

gets. Following our successful cyber defensive operation, we targeted a building

where the Hamas cyber operatives work. HamasCyberHQ.exe has been

removed.” This, admittedly, is a different species of reprisal, since it took

place in the context of ongoing hostilities between Israel and Hamas (in other

words, a “belligerent reprisal”), and it sought to thwart a suspected cyber opera-

tion, thus potentially qualifying as an anticipatory reprisal. Nevertheless, it high-

lights the problematic potential for states to resort to force in response to even a

suspected cyberattack. The softening on the view of forcible countermeasures

prompted by the Tallinn Manual . is therefore troubling. If states believe that

they are permitted to resort to forcible countermeasures (at least insofar that

their actions will fail to elicit widespread international condemnation), then this

is likely to continue to erode the ban on reprisals. Traditional forcible countermea-

sures are then likely to become easier to contemplate and countenance, ipso facto,

thereby risking retaliation and escalation.

Conclusion: Dangers of the Return of Reprisals

When subjected to a use of force, states have an array of pacific actions that they

may lawfully resort to under the category of countermeasures. Nothing in

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international law has overturned the obligation of states to refrain from using

force unless authorized by the UN Security Council or in self-defense under the

auspices of Article . We are not suggesting anything to the contrary. Our

point is that recent interpretations of international law, as evidenced by Justice

Simma in the Oil Platforms case and the expert opinions in the Tallinn

Manuals, as well as recent state breaches of the law (which have been met with

feeble international condemnation), highlight that the ban on reprisals is in a frag-

ile and fractured state.

Each of the cases introduced at the outset of this paper have their own respec-

tive complexities. For instance, the airstrikes by the United States, the U.K., and

France in Syria technically qualify as a “third-party reprisal” and the case is further

complicated by humanitarian considerations. India’s reprisals were against the

militant group Jaish-e-Mohammed, a nonstate actor not bound by international

law but nonetheless based in Pakistan, and Israel’s missile strike against Hamas

occurred prior to the alleged hostile cyber operation. Yet if we consider Justice

Simma’s view that proportionate countermeasures could include “defensive mili-

tary action,” and the Tallinn Manual .’s failure to include a limitation on forc-

ible countermeasures, it is conceivable that each of these reprisals could be

interpreted as permissible. This is because the mere fact that they qualify as forc-

ible countermeasures does not, according to these views, call for concern, as long

as the forcible countermeasures adhere to other legal requirements, such as pro-

portionality. Indeed, it is debatable whether Israel’s choice to conduct airstrikes

was proportionate to a suspected imminent use of cyber force; it is likewise debat-

able whether Pakistan’s decision to shoot down two Indian warplanes was propor-

tionate with India’s own reprisal against a nonstate actor. Nevertheless, the fact

that these forcible countermeasures were taken in response to a threat or use of

force is not, ostensibly, that with which Justice Simma or the Tallinn Manual

. would take issue.

The example discussed in this paper that would be most appropriately viewed as

a lawful countermeasure is the U.S. decision to employ offensive cyberspace oper-

ations against Iranian military targets on June , . The United States was

reportedly “cocked and loaded” for a missile attack against military sites in

Iran, but such a reprisal was reportedly called off by U.S. president Donald

Trump because the predicted death toll of  Iranian personnel was “not propor-

tionate to shooting down an unmanned drone.” Instead, the United States chose

to launch cyberattacks against Iranian facilities precisely because—as the head of

limited force and the return of reprisals in the law of armed conflict 183

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the U.S. Cyber Command insisted—these operations are “calibrated to stay well

below the threshold of war.” However, the emerging norms governing cyber

operations, as illustrated by the experts’ opinions in the Tallinn Manual ., sug-

gest that these actions may still be considered a use of force if the cyber actions

produce results similar in “scale and effect” to a kinetic use of force. This response

is in itself concerning because it would suggest that Iran could have interpreted

malicious cyber operations conducted by the United States as a use of force. If

Iran interpreted the actions in this way, then, according to at least some of the

Tallinn Manual . experts, Iran would be permitted to engage in proportionate

forcible countermeasures, cyber or otherwise. Again, it is contentious whether

the consequences of the U.S. cyber operation could be considered to be on par

with a kinetic missile strike. But by lowering the bar for resorting to forcible coun-

termeasures in response to an initial use of force, these developments necessarily

increase the risk of retaliation and the likelihood of escalation. Such developments

are therefore dangerous because they hint at, as Shane Darcy puts it, “a reinstate-

ment of the doctrine of armed reprisals, [which] would undermine the established

rules of international law on the use of military force and facilitate unilateral resort

to force that would actually threaten international peace and security.”

As both Brunstetter’s and Pearlman’s contributions to this roundtable suggest,

there are sound moral and strategic reasons for resorting to limited strikes vs. wag-

ing actual war, insofar as we assume that a state’s intention in using a limited

strike is to try to avoid escalation. However, even if we agree that limited

force is less likely to result in escalation than actual war, applying the principle

of the “probability of escalation” in the practice of limited use of force “is plagued

by ambiguity” and raises a number of concerns. First, even if the intention of a

state is to limit escalation by opting for limited strikes, whether the situation esca-

lates is ultimately not up to that state, but rather the target state. This places a lot

of faith in an entity that is already assumed to be untrustworthy and unpredictable

to accurately interpret the limited nature of the strike as an indication of a desire

not to escalate, and to act accordingly. As Robert Jervis reflects in the context of

the limited U.S. strike that killed Soleimani: “The success of coercion depends on

the adversary’s choices. . . . Iran may choose acquiescence as the path most in its

interest, but this is indeed a choice.”

Second, we should be cautious in assuming that the absence of (immediate)

escalation is because the states involved accurately interpret the limited strike as

a mechanism intended to avoid escalation. Such an outcome could just as easily

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be a result of the power asymmetries that characterize most of the examples of

limited force examined in this roundtable, wherein the weaker party knows that

it would suffer far more if the situation escalated. In this sense, if reprisals are

back on the table as a policy option, they are seemingly a tool primarily at the dis-

posal of the powerful against the weak. It is likely that they would be more prone

to escalate in less asymmetrical disputes.

Third, and owing to this, weaker states may thus calculate that they are more

able to compete by resorting to cyber operations. But again, the deployment of

cyberattacks is replete “with multiple opportunities for misunderstandings and

miscalculations,” which could produce unforeseen effects, and result in mounting

malicious exchanges within cyberspace. Moreover, as noted above, cyber opera-

tions could reasonably be interpreted as entailing a use of force, even if states

launch them to explicitly avoid escalation. In such cases, states may then find

themselves the targets of kinetic force in reprisal or retaliation.

Not only does contemplating limited strikes as a tool for conflict settlement chip

away at the restrictions on the resort to force, it erodes the obligation that states have

to resolve their disputes peacefully and normalizes this sort of violence in interna-

tional politics. The emphasis in international politics should remain on exploring ave-

nues for peaceful recourse to tensions and acting earlier in response to humanitarian

emergencies—not lowering the bar for the resort to violence, albeit short of war.

Such developments are further troubling considering recent developments in

the use of force against nonstate actors, wherein governments and commentators

increasingly recognize that nonstate actors no longer need to be under the “effec-

tive control” of a state in order to undertake an armed attack for the purposes of

Article . As a result, states have increasingly asserted a broad right to use self-

defensive force against nonstate actors in the territory of another state, even with-

out the state’s permission if the state is “unable or unwilling” to neutralize the

threat. The United States famously asserted this right after the September ,

, terrorist attacks when it targeted al-Qaeda in the territory of Afghanistan

without the country’s permission. Since that time, numerous other states (includ-

ing Colombia, Ethiopia, India, Kenya, Russia, and Turkey) have adopted a similar

view to justify their own uses of force against hostile nonstate groups operating in

neighboring states. The various armed activities conducted against the Islamic

State in Syria in  hinged on the same interpretation of the law, which was

endorsed by the UN Security Council and declared by some to be a “Grotian

moment” that created a new rule of international law. Combined with the

limited force and the return of reprisals in the law of armed conflict 185

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normalization of reprisals and the proliferation of cyber capabilities, such an inter-

pretation of international law stands to significantly increase the situations in

which states feel they have the right to target nonstate actors located in other states

with either cyber or kinetic force.

Our concern in this paper is that the weakening of the ban on reprisals, in tan-

dem with other developments pertaining to uses of cyber force and self-defense

against nonstate actors, is () leading to a permissive normative-legal environment

in which states are more likely than before to resort to uses of force over contin-

uing to pursue alternative pacific measures; and () leading to situations ripe for

escalation. Suggesting that states may resort to force in reaction to an initial unlaw-

ful use of force (cyber or otherwise) not only precariously dilutes the prohibition on

reprisals but also threatens to dissolve the distinction between Article () and

Article  altogether. Indeed, the precise purpose of the gap between Article ()

and Article  is to serve as a buffer against escalatory violence. An erosion of

this safeguard, facilitated by the return of reprisals, is thus a dangerous development

in light of the uncertainty involved in resorting to even limited uses of force and the

high costs of further destabilizing the international order.

NOTES

 See Hans Kelsen, Principles of International Law (Clark, N.J.: Lawbook Exchange, ), p. .
 Michael P. Scharf, “Striking a Grotian Moment: How the Syria Airstrikes Changed International Law
Relating to Humanitarian Intervention,” Chicago Journal of International Law , no.  (February
), p. ; and Mary Ellen O’Connell, “The Popular but Unlawful Armed Reprisal,” Ohio
Northern University Law Review , no.  (), pp. –.

 This then spurred a number of tit-for-tat retaliations between India and Pakistan. See “Balakot: Indian
Air Strikes Target Militants in Pakistan,” BBC News, February , , www.bbc.com/news/world-
asia-.

 “UN Chief Urges India and Pakistan to Dial Down Tensions in Wake of Kashmir Attack,” UN News,
February , , news.un.org/en/story///.

 Michael N. Schmitt, ed., Tallinn Manual . on the International Law Applicable to Cyber Operations,
nd ed. (Cambridge, U.K.: Cambridge University Press, ), p. .

 Israel Defense Forces, “CLEARED FOR RELEASE: We thwarted an attempted Hamas cyber offensive
against Israeli targets. Following our successful cyber defensive operation, we targeted a building . . . ,”
Twitter, May , , twitter.com/IDF/status/.

 Michael D. Shear, Eric Schmitt, Michael Crowley, and Maggie Haberman, “Strikes on Iran Approved by
Trump, Then Abruptly Pulled Back,” New York Times, June , ; and Julian E. Barnes and Thomas
Gibbons-Neff, “U.S. Carried Out Cyberattacks on Iran,” New York Times, June , , www.nytimes.
com////us/politics/us-iran-cyber-attacks.html.

 “Statement by the Department of Defense,” Defense.gov, January , , www.defense.
gov/Newsroom/Releases/Release/Article//statement-by-the-department-of-defense/source/-
GovDelivery/; Michael Crowley, Falih Hassan, and Eric Schmitt, “U.S. Strike in Iraq Kills Qassim
Suleimani, Commander of Iranian Forces,” New York Times, January , , www.nytimes.
com////world/middleeast/qassem-soleimani-iraq-iran-attack.html; and Stefan Talmon and
Miriam Heipertz, “The U.S. Killing of Iranian General Qasem Soleimani: Of Wrong Trees and Red
Herrings, and Why the Killing May Be Lawful after All” (Bonn Research Papers on Public
International Law /, University of Bonn, Institute for Public International Law, February ,
), p. .

186 Eric A. Heinze and Rhiannon Neilsen

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 “World Reacts to US Killing of Iran’s Qassem Soleimani in Iraq,” Al Jazeera, January , . See also
Kate Holton, “UK Says U.S. Is Entitled to Defend Itself Following Iraq Attack,” Reuters, January , ,
www.reuters.com/article/us-iraq-security-britain-wallace/uk-says-us-is-entitled-to-defend-itself-following-
iraq-attack-idUSKBNZM.

 Alan N. Salpeter and Jonathan C. Waller, “Armed Reprisals during Intermediacy—A New Framework
for Analysis in International Law,” Villanova Law Review , no.  (), p. .

 Antonio Cassese, International Law (Oxford: Oxford University Press, ), p. .
 See James Larry Taulbee and John Anderson, “Reprisal Redux,” Case Western Reserve Journal of

International Law , no.  (), pp. –.
 For example, the Special Committee of Jurists, established by the League of Nations to examine the 

Corfu incident, concluded that reprisals “may or may not be” consistent with the Covenant of the
League of Nations. The Permanent Court of International Justice also characterized reprisals as an
“alleged right” in , while the Institute of International Law passed a resolution indicating that
armed reprisals were restricted similarly to all recourse to war—restricted but not entirely banned.
See Shane Darcy, “Retaliation and Reprisal,” in Marc Weller, ed., Oxford Handbook on the Use of
Force (Oxford: Oxford University Press, ), pp. –.

 O’Connell, “Popular but Unlawful Armed Reprisal,” p. ; and Darcy, “Retaliation and Reprisal,” p. .
 See, especially, Military and Paramilitary Activities in and Against Nicaragua (Nicaragua v. United

States of America),  I.C.J. , paras. , .
 See United Nations General Assembly, preamble to Article ()(a); “Declaration on Principles of

International Law concerning Friendly Relations and Co-Operation among States in Accordance
with the Charter of the United Nartions,” A/RES/ (XXV), October , ; J. L. Brierly, The
Law of Nations: An Introduction to the International Law of Peace (New York: Oxford University
Press, ), p. ; and International Court of Justice, advisory opinion, “Legality of the Threat or
Use of Nuclear Weapons” (July , ), para. .

 Derek Bowett, “Reprisals involving Recourse to Armed Force,” American Journal of International Law
, no.  (January ), p. . See also Robert W. Tucker, “Reprisals and Self-Defense: The Customary
Law,” American Journal of International Law , no.  (July ), pp. –.

 Bowett, “Reprisals involving Recourse to Armed Force,” p. .
 Taulbee and Anderson, “Reprisal Redux,” pp. –; and Tucker, “Reprisals and Self-Defense,” p. .
 Article , Charter of the United Nations, October , .
 Nicar. v. U.S., para. .
 Ibid., para. .
 Tom Ruys, ‘Armed Attack’ and Article  of the UN Charter Evolutions in Customary Law and Practice

(Cambridge, U.K.: Cambridge University Press, ), p. .
 Oil Platforms (Islamic Republic of Iran v. United States of America),  I.C.J. , separate opinion of

Judge Simma, para. : “But we may also encounter a lower level of hostile military action, not reaching
the threshold of an ‘armed attack’ within the meaning of Article  of the UN Charter. Against such
hostile acts, a State may, of course, defend itself, but only within the more limited range and quality
of responses (the main difference being that possibility of collective self-defense does not arise, cf.
Nicaragua) and bound to necessity, proportionality, and immediacy in time in a particular way.”

 Oil Platforms, para. .
 The requirement for greater clarity regarding how international law applies to cyber operations became

particularly pertinent after the Russian-supported cyberattacks against the Estonian government on
April , . See Toomas Hendrik Ilves, forward in Schmitt, Tallinn Manual ., pp. xxiii–xxiv.

 Michael N. Schmitt, ed., Tallinn Manual on the International Law Applicable to Cyber Warfare
(Cambridge, U.K.: Cambridge University Press, ); and Schmitt, Tallinn Manual ..

 Schmitt, Tallinn Manual ., n., pp. –.
 See, for instance, Michael L. Gross and Tamar Meisels, Soft War: The Ethics of Unarmed Conflict

(Cambridge, U.K.: Cambridge University Press, ); George Lucas, Ethics and Cyber Warfare: The
Quest for Responsible Security in the Age of Digital Warfare (Oxford University Press, ); and
Martha Finnemore, “Ethical Dilemmas in Cyberspace,” Ethics & International Affairs , no. 
(Winter ), pp. –.

 For a list of experts and contributors to the first Tallinn Manual, see Schmitt, Tallinn Manual on the
International Law Applicable to Cyber Warfare, pp. xix–xxii; for experts and contributors to the second
Tallinn Manual, see Schmitt, Tallinn Manual ., pp. xii–xviii. See also Eric Talbot Jensen, “The Tallinn
Manual .: Highlights and Insights,” Georgetown Journal of International Law , p. .

 Schmitt, Tallinn Manual ., p. .
 International Court of Justice, “Legality of the Threat or Use of Nuclear Weapons,” para. . See also

Schmitt, Tallinn Manual ., p. .

limited force and the return of reprisals in the law of armed conflict 187

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 Schmitt, Tallinn Manual ., p. .
 Ibid., p. .
 In the Tallinn Manuals, “injured state” refers to the state affected by the initial unlawful use of force.

See, for instance, Schmitt, Tallinn Manual, p. , and Schmitt, Tallinn Manual ., p. .
 See Yoram Dinstein, War, Aggression and Self-Defence, th ed. (Cambridge, U.K.: Cambridge University

Press, ), p. .
 O’Connell, “Popular but Unlawful Armed Reprisal,” p. .
 See International Law Commission, Art. ()(a), “Draft Articles on Responsibility of States for

Internationally Wrongful Acts,” A/RES//, November , and Nicar. v. U.S., para. .
 Schmitt, Tallinn Manual ., p. .
 These countermeasures include, for instance, proportionality, discrimination, and human rights law.

See Schmitt, Tallinn Manual ., pp. –.
 Ibid., p. .
 Ibid., p. .
 Israel Defense Forces, “CLEARED FOR RELEASE.”
 In addition to countermeasures, states are also permitted to engage in acts of retorsion—that is,

unfriendly or discourteous acts that are nonetheless lawful. See Darcy, “Retaliation and Reprisal,” p. .
 Donald Trump, quoted in “US-Iran: Trump Says Military Was ‘Cocked and Loaded’ to Retaliate,” BBC

News, June , , www.bbc.com/news/world-us-canada-.
 Julian E. Barnes, “U.S. Cyberattack Hurt Iran’s Ability to Target Oil Tankers, Officials Say,” New York

Times, August , , www.nytimes.com////us/politics/us-iran-cyber-attack.html. See also
Barnes and Gibbons-Neff, “US Carried Out Cyberattacks on Iran”; and Schmitt, Tallinn Manual .,
pp. –.

 Darcy, “Retaliation and Reprisal,” p. .
 Daniel R. Brunstetter, “Wading Knee-Deep Into the Rubicon: Escalation and the Morality of Limited

Strikes,” Ethics & International Affairs , no.  (July, ), pp. –. Wendy Pearlman, “Syrian
Views on Obama’s Red Line: The Ethical Case for Strikes against Assad,” Ethics & International
Affairs , no.  (July, ), pp. –.

 On the principle of “probability of escalation,” see Daniel R. Brunstetter and Megan Braun, “From Jus
ad Bellum to Jus ad Vim: Recalibrating Our Understanding of the Moral Use of Force,” Ethics &
International Affairs , no.  (February ), pp. –.

 Robert Jervis, “On the Current Confrontation with Iran,” War on the Rocks, January , , warontherocks.
com///on-the-current-confrontation-with-iran/.

 Ibid. See also Neil C. Rowe, “The Ethics of Cyberweapons in Warfare,” International Journal of
Technoethics , no.  (January/March ), pp. –.

 Eric A. Heinze, “The Evolution of International Law in Light of the ‘Global War on Terror,’” Review of
International Studies , no.  (July ), pp. –.

 See Ashley Deeks, “‘Unwilling or Unable’: Toward a Normative Framework for Extra-Territorial
Self-Defense,” Virginia Journal of International Law , no.  (), pp. –.

 Michael P. Scharf, “How the War against ISIS Changed International Law,” Case Western Reserve
Journal of International Law , no.  (), pp. –.

 Ibid., p. .

Abstract: Armed reprisals are the limited use of military force in response to unlawful actions per-
petrated against states. Historically, reprisals provided a military remedy for states that had been
wronged (often violently) by another state without having to resort to all-out war in order to coun-
ter or deter such wrongful actions. While reprisals are broadly believed to have been outlawed by
the UN Charter, states continue to routinely undertake such self-help measures. As part of the
roundtable, “The Ethics of Limited Strikes,” this essay examines the doctrine of armed reprisals
in light of recent instances of states using force “short of war” in this manner. We argue that
the ban on reprisals has been largely ignored by states, and that recent attempts to apply the
laws of armed conflict to the cyber domain (such as the Tallinn Manual) are further weakening
this prohibition. We conclude that this is a potentially dangerous development that lowers the
bar for resorting to military force, risking escalation and thereby further destabilizing the interna-
tional system.

Keywords: reprisals, cyber operations, Tallinn Manual, self-defense, law of armed conflict

188 Eric A. Heinze and Rhiannon Neilsen

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  • Limited Force and the Return of Reprisals in the Law of Armed Conflict
    • The Ban on Reprisals
    • Developments in the Rules and Attitudes regarding Hostile Cyber Operations
    • Conclusion: Dangers of the Return of Reprisals

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January 23, 2005

Atrocities in Plain Sight
By Andrew Sullivan

Correction Appended

THE ABU GHRAIB INVESTIGATIONS
The Official Report of the
Independent Panel and Pentagon on the Shocking Prisoner Abuse in
Iraq.
Edited by Steven Strasser.
Illustrated. 175 pp.
PublicAffairs. Paper, $14.

TORTURE AND TRUTH
America, Abu Ghraib,
and the War on Terror.
By Mark Danner.
Illustrated. 580 pp.
New York Review Books.
Paper, $19.95.

IN scandals, chronology can be everything. The facts you find out first,
the images that are initially imprinted on your consciousness, the

details that then follow: these make the difference between a culture-
changing tipping point and a weatherable media flurry. With the
prisoner abuse at Abu Ghraib, the photographs, which have become
iconic, created the context and the meaning of what took place. We
think we know the contours of that story: a few soldiers on the night
shift violated established military rules and subjected prisoners to
humiliating abuse and terror. Chaos in the line of command, an
overstretched military, a bewildering insurgency: all contributed to
incidents that were alien to the values of the United States and its
military. The scandal was an aberration. It was appalling.
Responsibility was taken. Reports were issued. Hearings continue.

But the photographs lied. They told us a shard of the truth. In
retrospect, they deflected us away from what was really going on, and
what is still going on. The problem is not a co-ordinated cover-up. Nor
is it a lack of information. The official government and Red Cross
reports on prisoner torture and abuse, compiled in two separate
volumes, ”The Abu Ghraib Investigations,” by a former Newsweek
editor, Steven Strasser, and ”Torture and Terror,” by a New York
Review of Books contributor, Mark Danner, are almost numbingly
exhaustive in their cataloging of specific mistakes, incidents and
responsibilities. Danner’s document-dump runs to almost 600 pages
of print, the bulk of it in small type. The American Civil Liberties
Union has also successfully engineered the release of what may
eventually amount to hundreds of thousands of internal government
documents detailing the events.

That tells you something important at the start. Whatever happened
was exposed in a free society; the military itself began the first
inquiries. You can now read, in these pages, previously secret

memorandums from sources as high as the attorney general all the
way down to prisoner testimony to the International Committee of the
Red Cross. I confess to finding this transparency both comforting and
chilling, like the photographs that kick-started the public’s awareness
of the affair. Comforting because only a country that is still free would
allow such airing of blood-soaked laundry. Chilling because the crimes
committed strike so deeply at the core of what a free country is
supposed to mean. The scandal of Abu Ghraib is therefore a sign of
both freedom’s endurance in America and also, in certain dark
corners, its demise.

The documents themselves tell the story. In this, Danner’s book is by
far the better of the two. He begins with passionate essays that
originally appeared in The New York Review of Books, but very soon
leaves the stage and lets the documents speak for themselves. His
book contains the two reports Strasser publishes, but many more as
well. If you read it in the order Danner provides, you can see exactly
how this horror came about — and why it’s still going on. As Danner
observes, this is a scandal with almost everything in plain sight.

The critical enabling decision was the president’s insistence that
prisoners in the war on terror be deemed ”unlawful combatants”
rather than prisoners of war. The arguments are theoretically sound
ones — members of Al Qaeda and the Taliban are not party to the
Geneva Convention and their own conduct violates many of its basic
demands. But even at the beginning, President

Bush clearly feared the consequences of so broad an exemption for
cruel and inhumane treatment. So he also insisted that although
prisoners were not legally eligible for humane treatment, they should

be granted it anyway. The message sent was: these prisoners are
beneath decent treatment, but we should still provide it. That’s a
strangely nuanced signal to be giving the military during wartime.

You can see the same strange ambivalence in Secretary of Defense
Donald Rumsfeld’s decision to approve expanded interrogation
techniques in December 2002 for Guant?mo inmates — and then to
revoke the order six weeks later. The documents show that the
president was clearly warned of the dangers of the policy he decided
upon — Colin Powell’s January 2002 memo is almost heart-breakingly
prescient and sane in this regard — but he pressed on anyway.
Rumsfeld’s own revocation of the order suggests his own moral
qualms about what he had unleashed.

But Bush clearly leaned toward toughness. Here’s the precise
formulation he used: ”As a matter of policy, the United States Armed
Forces shall continue to treat detainees humanely and, to the extent
appropriate and consistent with military necessity, in a manner
consistent with the principles of Geneva.” (My italics.)

Notice the qualifications. The president wants to stay not within the
letter of the law, but within its broad principles, and in the last resort,
”military necessity” can overrule all of it. According to his legal
counsel at the time, Alberto R. Gonzales, the president’s warmaking
powers gave him ultimate constitutional authority to ignore any
relevant laws in the conduct of the conflict. Sticking to the Geneva
Convention was the exclusive prerogative of one man, George W.
Bush; and he could, if he wished, make exceptions. As Assistant
Attorney General Jay S. Bybee argues in another memo: ”Any effort to
apply Section 2340A in a manner that interferes with the president’s

direction of such core war matters as the detention and interrogation
of enemy combatants thus would be unconstitutional.” (Section
2340A refers to the United States law that incorporates the
international Convention Against Torture.)

The president’s underlings got the mixed message. Bybee analyzed the
relevant statutes against torture to see exactly how far the military
could go in mistreating prisoners without blatant illegality. His answer
was surprisingly expansive. He argued that all the applicable statutes
and treaty obligations can be read in such a way as to define torture
very narrowly. Bybee asserted that the president was within his legal
rights to permit his military surrogates to inflict ”cruel, inhuman or
degrading” treatment on prisoners without violating strictures against
torture. For an act of abuse to be considered torture, the abuser must
be inflicting pain ”of such a high level of intensity that the pain is
difficult for the subject to endure.” If the abuser is doing this to get
information and not merely for sadistic enjoyment, then ”even if the
defendant knows that severe pain will result from his actions,” he’s
not guilty of torture. Threatening to kill a prisoner is not torture; ”the
threat must indicate that death is ‘imminent.’ ” Beating prisoners is
not torture either. Bybee argues that a case of kicking an inmate in the
stomach with military boots while the prisoner is in a kneeling
position does not by itself rise to the level of torture.

Bybee even suggests that full-fledged torture of inmates might be legal
because it could be construed as ”self-defense,” on the grounds that
”the threat of an impending terrorist attack threatens the lives of
hundreds if not thousands of American citizens.” By that reasoning,
torture could be justified almost anywhere on the battlefield of the war
on terror. Only the president’s discretion forbade it. These guidelines

were formally repudiated by the administration the week before
Gonzales’s appearance before the Senate Judiciary Committee for
confirmation as attorney general.

In this context, Rumsfeld’s decision to take the gloves off in Guant?mo
for six weeks makes more sense. The use of dogs to intimidate
prisoners and the use of nudity for humiliation were now allowed.
Although abuse was specifically employed in only two cases before
Rumsfeld rescinded the order, practical precedents had been set; and
the broader mixed message sent from the White House clearly reached
commanders in the field. Lt. Gen. Ricardo S. Sanchez, in charge of the
Iraq counterinsurgency, also sent out several conflicting memos with
regard to the treatment of prisoners — memos that only added to the
confusion as to what was permitted and what wasn’t. When the
general in charge of Guant?mo was sent to Abu Ghraib to help
intelligence gathering, the ”migration” of techniques (the term used in
the Pentagon’s Schlesinger Report) from those reserved for extreme
cases in the leadership of Al Qaeda to thousands of Iraqi civilians,
most of whom, according to intelligence sources, were innocent of any
crime at all, was complete. Again, there is no evidence of anyone at a
high level directly mandating torture or abuse, except in two cases in
Gitmo. But there is growing evidence recently uncovered by the
A.C.L.U. — not provided in Danner’s compilation — that authorities in
the F.B.I. and elsewhere were aware of abuses and did little to prevent
or stop them. Then there were the vast loopholes placed in the White
House torture memos, the precedents at Guant?mo, the winks and
nods from Washington and the pressure of an Iraqi insurgency that
few knew how to restrain. It was a combustible mix.

What’s notable about the incidents of torture and abuse is first, their
common features, and second, their geographical reach. No one has
any reason to believe any longer that these incidents were restricted to
one prison near Baghdad. They were everywhere: from Guant?mo Bay
to Afghanistan, Baghdad, Basra, Ramadi and Tikrit and, for all we
know, in any number of hidden jails affecting ”ghost detainees” kept
from the purview of the Red Cross. They were committed by the
Marines, the Army, the Military Police, Navy Seals, reservists, Special
Forces and on and on. The use of hooding was ubiquitous; the same
goes for forced nudity, sexual humiliation and brutal beatings; there
are examples of rape and electric shocks. Many of the abuses seem
specifically tailored to humiliate Arabs and Muslims, where horror at
being exposed in public is a deep cultural artifact.

Whether random bad apples had picked up these techniques from
hearsay or whether these practices represented methods authorized by
commanders grappling with ambiguous directions from Washington
is hard to pin down from the official reports. But it is surely significant
that very few abuses occurred in what the Red Cross calls ”regular
internment facilities.” Almost all took place within prisons designed to
collect intelligence, including, of course, Saddam Hussein’s previous
torture palace at Abu Ghraib and even the former Baathist secret
police office in Basra. (Who authorized the use of these particular
places for a war of liberation is another mystery.) This tells us two
things: that the vast majority of soldiers in Iraq and elsewhere had
nothing to do with these incidents; and that the violence had a
purpose. The report of the International Committee of the Red Cross
says: ”Several military intelligence officers confirmed to the I.C.R.C.
that it was part of the military intelligence process to hold a person
deprived of his liberty naked in a completely dark and empty cell for a

prolonged period to use inhumane and degrading treatment,
including physical and psychological coercion.”

An e-mail message recovered by Danner from a captain in military
intelligence in August 2003 reveals the officer’s desire to distinguish
between genuine prisoners of war and ”unlawful combatants.” The
president, of course, had endorsed that distinction in theory, although
not in practice — even in Guant?mo, let alone Iraq. Somehow Bush’s
nuances never made it down the chain to this captain. In the message,
he asked for advice from other intelligence officers on which illegal
techniques work best: a ”wish list” for interrogators. Then he wrote:
”The gloves are coming off gentlemen regarding these detainees, Col.
Boltz has made it clear that we want these individuals broken.”

How do you break these people? According to the I.C.R.C., one
prisoner ”alleged that he had been hooded and cuffed with flexicuffs,
threatened to be tortured and killed, urinated on, kicked in the head,
lower back and groin, force-fed a baseball which was tied into the
mouth using a scarf and deprived of sleep for four consecutive days.
Interrogators would allegedly take turns ill-treating him. When he
said he would complain to the I.C.R.C. he was allegedly beaten more.
An I.C.R.C. medical examination revealed hematoma in the lower
back, blood in urine, sensory loss in the right hand due to tight
handcuffing with flexicuffs, and a broken rib.”

Even Bybee’s very narrow definition of torture would apply in this
case. Here’s another — not from Abu Ghraib:

A detainee ”had been hooded, handcuffed in the back, and made to lie
face down, on a hot surface during transportation. This had caused

severe skin burns that required three months’ hospitalization. . . . He
had to undergo several skin grafts, the amputation of his right index
finger, and suffered . . . extensive burns over the abdomen, anterior
aspects of the outer extremities, the palm of his right hand and the
sole of his left foot.”

And another, in a detainee’s own words: ”They threw pepper on my
face and the beating started. This went on for a half hour. And then he
started beating me with the chair until the chair was broken. After that
they started choking me. At that time I thought I was going to die, but
it’s a miracle I lived. And then they started beating me again. They
concentrated on beating me in my heart until they got tired from
beating me. They took a little break and then they started kicking me
very hard with their feet until I passed out.”

An incident uncovered by the A.C.L.U. and others was described in
The Washington Post on Dec. 22. A young soldier with no training in
interrogation techniques ”acknowledged forcing two men to their
knees, placing bullets in their mouths, ordering them to close their
eyes, and telling them they would be shot unless they answered
questions about a grenade incident. He then took the bullets, and a
colleague pretended to load them in the chamber of his M-16 rifle.”

These are not allegations made by antiwar journalists. They are
incidents reported within the confines of the United States
government. The Schlesinger panel has officially conceded, although
the president has never publicly acknowledged, that American soldiers
have tortured five inmates to death. Twenty-three other deaths that
occurred during American custody had not been fully investigated by
the time the panel issued its report in August. Some of the techniques

were simply brutal, like persistent vicious beatings to
unconsciousness. Others were more inventive. In April 2004,
according to internal Defense Department documents recently
procured by the A.C.L.U., three marines in Mahmudiya used an
electric transformer, forcing a detainee to ”dance” as the electricity
coursed through him. We also now know that in Guant?mo, burning
cigarettes were placed in the ears of detainees.

Here’s another case from the Army’s investigation into Abu Ghraib,
led by Lt. Gen. Anthony R. Jones and Maj. Gen. George R. Fay:

”On another occasion DETAINEE-07 was forced to lie down while
M.P.’s jumped onto his back and legs. He was beaten with a broom
and a chemical light was broken and poured over his body. . . . During
this abuse a police stick was used to sodomize DETAINEE-07 and two
female M.P.’s were hitting him, throwing a ball at his penis, and taking
photographs.”

Last December, documents obtained by the A.C.L.U. also cited an
F.B.I. agent at Guant?mo Bay who observed that ”on a couple of
occasions, I entered interview rooms to find a detainee chained hand
and foot in a fetal position to the floor, with no chair, food or water.
Most times they had urinated or defecated on themselves, and had
been left there for 18 to 24 hours or more.” In one case, he added, ”the
detainee was almost unconscious on the floor, with a pile of hair next
to him. He had apparently been literally pulling his own hair out
throughout the night.”

This kind of scene can also be found at Abu Ghraib: ”An 18 November
2003 photograph depicts a detainee dressed in a shirt or blanket lying

on the floor with a banana inserted into his anus. This as well as
several others show the same detainee covered in feces, with his hands
encased in sandbags, or tied in foam and between two stretchers.”
This, apparently, was a result of self-inflicted mania, although where
the mentally ill man procured a banana is not elaborated upon.

Also notable in Abu Ghraib was the despicable use of religion to
humiliate. One Muslim inmate was allegedly forced to eat pork, had
liquor forced down his throat and told to thank Jesus that he was
alive. He recounted in broken English:

”They stripped me naked, they asked me, ‘Do you pray to Allah?’ I
said, ‘Yes.’ They said ‘F / / / you’ and ‘F / / / him.’ ” Later, this inmate
recounts: ”Someone else asked me, ‘Do you believe in anything?’ I said
to him, ‘I believe in Allah.’ So he said, ‘But I believe in torture and I
will torture you.’ ”

Whether we decide to call this kind of treatment ”abuse” or some
other euphemism, there is no doubt what it was in the minds of the
American soldiers who perpetrated it. They believed in torture. And
many believed it was sanctioned from above. According to The
Washington Post, one sergeant who witnessed the torture thought
Military Intelligence approved of all of it: ”The M.I. staffs, to my
understanding, have been giving Graner” — one of the chief torturers
at Abu Ghraib — ”compliments on the way he has been handling the
M.I. holds [prisoners held by military intelligence]. Example being
statements like ‘Good job, they’re breaking down real fast’; ‘They
answer every question’; ‘They’re giving out good information, finally’;
and ‘Keep up the good work’ — stuff like that.” At Guant?mo Bay,

newly released documents show that some of the torturers felt they
were acting on the basis of memos sent from Washington.

Was the torture effective? The only evidence in the documents Danner
has compiled that it was even the slightest bit helpful comes from the
Schlesinger report. It says ”much of the information in the recently
released 9/11 Commission’s report, on the planning and execution of
the attacks on the World Trade Center and Pentagon, came from
interrogation of detainees at Guant?mo and elsewhere.” But the
context makes plain that this was intelligence procured without
torture. It also claims that good intelligence was received from the two
sanctioned cases of expanded interrogation techniques at Guant?mo.
But everything else points to the futility of the kind of brutal
techniques used in Iraq and elsewhere.

Worse, there’s plenty of evidence that this kind of treatment makes
gathering intelligence harder. In Abu Ghraib, according to the official
documents, up to 90 percent of the inmates were victims of random
and crude nighttime sweeps. If these thousands of Iraqis did not
sympathize with the insurgency before they came into American
custody, they had good reason to thereafter. Stories of torture, of
sexual humiliation, of religious mockery have become widespread in
Iraq, and have been amplified by the enemy. If the best intelligence
comes from persuading the indigenous population to give up
information on insurgents, then the atrocities perpetrated by a tiny
minority of American troops actually help the insurgency, rather than
curtail it.

Who was responsible? There are various levels of accountability. But it
seems unmistakable from these documents that decisions made by the

president himself and the secretary of defense contributed to
confusion, vagueness and disarray, which, in turn, led directly to
abuse and torture. The president bears sole responsibility for ignoring
Colin Powell’s noble warnings. The esoteric differences between legal
”abuse” and illegal ”torture” and the distinction between ”prisoners of
war” and ”unlawful combatants” were and are so vague as to make the
abuse of innocents almost inevitable. Justice Sandra Day O’Connor
wrote for the majority of the Supreme Court in Hamdi v. Rumsfeld
that ”the government has never provided any court with the full
criteria that it uses in classifying individuals” as enemy combatants. It
is one thing to make a distinction in theory between Geneva-protected
combatants and unprotected Qaeda operatives. But in the chaos of a
situation like Iraq, how can you practically know the difference? When
one group is designated as unworthy of humane treatment, and that
group is impossible to distinguish from others, it is unsurprising that
exceptions quickly become rules. The best you can say is that in an
administration with a reputation for clear lines of command and clear
rules of engagement, the vagueness and incompetence are the most
striking features.

Worse, the president has never acknowledged the scope or the real
gravity of what has taken place. His first instinct was to minimize the
issue; later, his main references to it were a couple of sentences
claiming that the abuses were the work of a handful of miscreants,
rather than a consequence of his own decisions. But the impact of
these events on domestic morale, on the morale of the vast majority of
honorable soldiers in a very tough place and on the reputation of the
United States in the Middle East is incalculable. The war on terror is
both military and political. The president’s great contribution has
been to recognize that a solution is impossible without political reform

in the Middle East. And yet the prevalence of brutality and inhumanity
among American interrogators has robbed the United States of the
high ground it desperately needs to maintain in order to win. What
better weapon for Al Qaeda than the news that an inmate at Guant?
mo was wrapped in the Israeli flag or that prisoners at Abu Ghraib
were raped? There is no escaping the fact that, whether he intended to
or not, this president handed Al Qaeda that weapon. Sometimes a
brazen declaration of toughness is actually a form of weakness. In a
propaganda war for the hearts and minds of Muslims everywhere, it’s
simply self-defeating.

And the damage done was intensified by President Bush’s refusal to
discipline those who helped make this happen. A president who truly
recognized the moral and strategic calamity of this failure would have
fired everyone responsible. But the vice president’s response to
criticism of the defense secretary in the wake of Abu Ghraib was to
say, ”Get off his back.” In fact, those with real responsibility for the
disaster were rewarded. Rumsfeld was kept on for the second term,
while the man who warned against ignoring the Geneva Conventions,
Colin Powell, was seemingly nudged out. The man who wrote a legal
opinion maximizing the kind of brutal treatment that the United
States could legally defend, Jay S. Bybee, was subsequently rewarded
with a nomination to a federal Court of Appeals. General Sanchez and
Gen. John P. Abizaid remain in their posts. Alberto R. Gonzales, who
wrote memos that validated the decision to grant Geneva status to
inmates solely at the president’s discretion, is now nominated to the
highest law enforcement job in the country: attorney general. The man
who paved the way for the torture of prisoners is to be entrusted with
safeguarding the civil rights of Americans. It is astonishing he has

been nominated, and even more astonishing that he will almost
certainly be confirmed.

But in a democracy, the responsibility is also wider. Did those of us
who fought so passionately for a ruthless war against terrorists give an
unwitting green light to these abuses? Were we na? in believing that
characterizing complex conflicts from Afghanistan to Iraq as a single
simple war against ”evil” might not filter down and lead to decisions
that could dehumanize the enemy and lead to abuse? Did our
conviction of our own rightness in this struggle make it hard for us to
acknowledge when that good cause had become endangered? I fear
the answer to each of these questions is yes.

American political polarization also contributed. Most of those who
made the most fuss about these incidents — like Mark Danner or
Seymour Hersh — were dedicated opponents of the war in the first
place, and were eager to use this scandal to promote their agendas.
Advocates of the war, especially those allied with the administration,
kept relatively quiet, or attempted to belittle what had gone on, or
made facile arguments that such things always occur in wartime. But
it seems to me that those of us who are most committed to the Iraq
intervention should be the most vociferous in highlighting these
excrescences. Getting rid of this cancer within the system is essential
to winning this war.

I’m not saying that those who unwittingly made this torture possible
are as guilty as those who inflicted it. I am saying that when the results
are this horrifying, it’s worth a thorough reassessment of rhetoric and
war methods. Perhaps the saddest evidence of our communal denial in
this respect was the election campaign. The fact that American

soldiers were guilty of torturing inmates to death barely came up. It
went unmentioned in every one of the three presidential debates. John
F. Kerry, the ”heroic” protester of Vietnam, ducked the issue out of
what? Fear? Ignorance? Or a belief that the American public
ultimately did not care, that the consequences of seeming to criticize
the conduct of troops would be more of an electoral liability than
holding a president accountable for enabling the torture of innocents?
I fear it was the last of these. Worse, I fear he may have been right.

Photos: A naked prisoner appears to cower before an unmuzzled dog
in a photograph taken at Abu Ghraib prison near Baghdad in late
2003 and leaked to The Washington Post a few months later.
(Photograph by Agence France-Presse, via Getty Images); A man
detained at Abu Ghraib appears chained to a bed with a woman’s
underpants on his head. (Photograph courtesy of The Washington
Post); A hooded detainee at Abu Ghraib, apparently chained to a door
and balancing on two boxes. (Photograph from Agence France-
Presse/The Washington Post)

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