Соответствующая норма
Peru
Practice Relating to Rule 103. Collective Punishments
Peru’s IHL Manual (2004) states: “collective punishment … [is] prohibited”. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 32.i.
Peru’s IHL and Human Rights Manual (2010), in a section on occupied territories, prohibits “collective punishment”. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 60(a)(c), p. 264.
Peru’s Decree on the Use of Force by the Armed Forces (2010) states:
With respect to the persons mentioned above [i.e. persons not directly participating in hostilities or who have laid down their arms as well as persons placed hors de combat by illness, wounds, detention or any other reason], the following actions are prohibited anytime and anywhere:
c. Collective punishments.
f. Threats to carry out any of the aforementioned acts. 
Peru, Decree on the Use of Force by the Armed Forces, 2010, Article 8.1.c and f.