"Common Article 3" refers to the identically worded Article 3 appearing in each of the four 1949 Geneva Conventions. It establishes the irreducible humanitarian floor that applies to any "armed conflict not of an international character" occurring in the territory of a State Party. Because every UN member state is party to the Geneva Conventions, this baseline has near-universal treaty reach.
The provision protects persons taking no active part in hostilities, including members of armed forces who have laid down their arms or are hors de combat through sickness, wounds, detention, or any other cause. Against such persons, the following acts are prohibited "at any time and in any place whatsoever":
- violence to life and person, in particular murder, mutilation, cruel treatment, and torture;
- taking of hostages;
- outrages upon personal dignity, in particular humiliating and degrading treatment;
- sentencing or execution without judgment by a regularly constituted court affording all judicial guarantees recognized as indispensable by civilized peoples.
Common Article 3 also obliges parties to collect and care for the wounded and sick, and authorizes impartial humanitarian bodies such as the ICRC to offer their services.
The International Court of Justice, in Nicaragua v. United States (1986), described these rules as "a minimum yardstick" reflecting "elementary considerations of humanity" applicable in both international and non-international armed conflicts. The ICTY Appeals Chamber in Tadić (1995) confirmed that violations of Common Article 3 entail individual criminal responsibility under customary international law, and Article 8(2)(c) of the 1998 Rome Statute criminalizes such violations as war crimes.
In practice, the "baseline" framing matters because non-international conflicts—civil wars, insurgencies, conflicts with armed groups—are not governed by the full body of Geneva law applicable to interstate war. Common Article 3, supplemented where applicable by Additional Protocol II (1977) and customary IHL, defines the legal floor below which no party, state or non-state, may lawfully fall.
Example
In *Hamdan v. Rumsfeld* (2006), the U.S. Supreme Court held that Common Article 3 applied to detainees held by the United States in the conflict with Al-Qaeda, requiring trial by a "regularly constituted court."
Frequently asked questions
Yes. By its terms it binds 'each Party to the conflict,' which is widely understood to include organized non-state armed groups operating in a non-international armed conflict, even though they cannot themselves sign the Conventions.
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