Civilian

In war, civilians are people who are not members of any armed force to the conflict. It is a war crime under the law of armed conflict to deliberately target civilians with military attacks, along with numerous other considerations to minimize civilian casualties during times of war. Civilians engaging in hostilities are considered unlawful combatants, and lose their protection from attack.

A civilian is slightly different from a non-combatant, because some non-combatants are not civilians (for example, people who are not in a military but support war effort or military operations, military chaplains, or military personnel who are serving with a neutral country). Civilians in the territories of a party to an armed conflict are entitled to certain privileges under the customary laws of war and international treaties such as the Fourth Geneva Convention. The privileges that they enjoy under international law depends on whether the conflict is a civil war or an international one.

More broadly, the term can refer to any people in the general public who are outside of a particular group. For example, when reporting on incidents, members of first responder services (such as firefighters and law enforcement) may colloquially refer to members of the public as civilians.

The word "civilian" goes back to the late 14th century and is from Old French civilien. Civilian is believed to have been used to refer to non-combatants as early as 1829. The term "non-combatant" now refers to people in general who are not taking part of hostilities in time of war, rather than just civilians.

The International Committee of the Red Cross 1958 Commentary on 1949 Geneva Convention IV Relative to the Protection of Civilian Persons in Time of War states: "Every person in enemy hands must have some status under international law: he is either a prisoner of war and, as such, covered by the Third Convention, a civilian covered by the Fourth Convention, or again, a member of the medical personnel of the armed forces who is covered by the First Convention. There is no intermediate status; nobody in enemy hands can be outside the law. We feel that this is a satisfactory solution – not only satisfying to the mind, but also, and above all, satisfactory from the humanitarian point of view." The ICRC has expressed the opinion that "If civilians directly engage in hostilities, they are considered "unlawful" or "unprivileged" combatants or belligerents (the treaties of humanitarian law do not expressly contain these terms). They may be prosecuted under the domestic law of the detaining state for such action."

Article 50 of the 1977 Protocol I Additional to the Geneva Conventions provides:

The definition is negative and defines civilians as persons who do not belong to definite categories. The categories of persons mentioned in Article 4A(1), (2), (3) and (6) of the Third Convention and in Article 43 of the Protocol I are combatants. Therefore, the Commentary to the Protocol pointed that anyone who is not a member of the armed forces and does not take part of hostilities in time of war is a civilian. Civilians cannot take part in armed conflict. Civilians are given protection under the Geneva Conventions and Protocols thereto. Article 51 describes the protection that must be given to the civilian population and individual civilians.

Chapter III of Protocol I regulates the targeting of civilian objects. Article 8(2)(b)(i) of the 1998 Rome Statute of the International Criminal Court also includes this in its list of war crimes: "Intentionally directing attacks against the civilian population as such or against individual civilians not taking part in hostilities". Not all states have ratified 1977 Protocol I or the 1998 Rome Statute, but it is an accepted principle of international humanitarian law that the direct targeting of civilians is a breach of the customary laws of war and is binding on all belligerents.