Règle correspondante
Peru
Practice Relating to Rule 111. Protection of the Wounded, Sick and Shipwrecked against Pillage and Ill-Treatment
Peru’s IHL Manual (2004) states:
At all times in an armed conflict, and particularly after an engagement, parties to the conflict must take all possible measures, to the extent permitted by military requirements and taking into account the circumstances and location, in order to … protect [the wounded, sick and shipwrecked] against pillage and ill-treatment and ensure that they are adequately cared for. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 86.a.(1).
Peru’s IHL and Human Rights Manual (2010) states:
At all times in an armed conflict, and particularly after an engagement, parties to the conflict must take all possible measures, to the extent permitted by military requirements and taking into account the circumstances and location, in order to:
(1) … [P]rotect [the wounded, sick and shipwrecked] against pillage and ill-treatment and ensure that they are adequately cared for. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 77(a)(1), p. 227.
Under Peru’s Code of Military Justice (1980), ill-treatment of a non-resisting wounded enemy constitutes a violation of the law of nations. 
Peru, Code of Military Justice, 1980, Article 94.