...great deal in some circumstances – most commonly, in the de
termination whether an individual may be tried for war crimes, a question at issue in our own military commission trials as we speak. It may also ultimately matter in al Warafi, for reasons I discuss below. But “armed conflict” (see GCIII Common Article 2) and “active hostilities” (in Article 118) are separate
terms in the treaties, and were deliberately designed to refer to separate concepts, as well. As the Commentary to GCIII makes clear, the drafters of Article 118 were...