Implementing International Humanitarian Law examines the international humanitarian law rules and their application by the ad hoc tribunals with regard to the substantive laws of the International Criminal Tribunal for the Former Yugoslavia (ICTY) and the International Criminal Tribunal Rwanda (ICTR). The practice of the ICTY and the ICTR and their contribution to international humanitarian law, together with their possible impact on the International Criminal Court, is examined in light of the decisions rendered by the ad hoc tribunals and of the latest international humanitarian law instruments such as the 1996 ILC Draft Code of Crimes Against the Peace and Security of Mankind and the ICC Statute.