القاعدة ذات الصلة
Peru
Practice Relating to Rule 156. Definition of War Crimes
Peru’s IHL Manual (2004) states:
War crimes are violations of international humanitarian law or, to use the terminology established for international armed conflicts, grave breaches of the Geneva Conventions of 1949 and the laws and customs of war applicable in cases of international armed conflict. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 31.a.
The manual defines the term “war crimes” as:
They are violations of international humanitarian law judged and punished based on the Charter and Judgments of the Nuremberg and Tokyo Military Tribunals and UN 1950 [Principles of International Law Recognized in the Charter of the Nuremberg Tribunal and in the Judgment of the Tribunal, United Nations International Law Commission, 5 June–29 July 1950]. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, Annex 9, Glossary of Terms.
Peru’s IHL and Human Rights Manual (2010) states: “War crimes are violations of international humanitarian law or, to use the terminology established for international armed conflicts, grave breaches of the Geneva Conventions of 1949 and the laws and customs of war applicable in cases of international armed conflict.” 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 32(a), p. 248; see also p. 406.
In its Glossary of Terms, the manual defines “war crimes” as:
[V]iolations of international humanitarian law judged and punished based on the Charter and Judgments of the Nuremberg and Tokyo Military Tribunals and UN 1950 [Principles of International Law Recognized in the Charter of the Nuremberg Tribunal and in the Judgment of the Tribunal, United Nations International Law Commission, 5 June–29 July 1950]. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, p. 401.