Règle correspondante
Peru
Practice Relating to Rule 125. Correspondence of Persons Deprived of Their Liberty
Peru’s IHL Manual (2004) states:
a. No later than one week after arrival at the camp, every prisoner of war must be allowed to send a capture card to his family and another to the ICRC’s Central Tracing Agency, informing them of his capture, address and state of health.
b. The same applies when a prisoner of war is transferred to a hospital or another camp.
c. The purpose of this requirement is to inform the outside world of the whereabouts and situation of prisoners of war.
d. It is not necessary to allow a prisoner of war to send a capture card for a temporary absence from the camp, for example, if he is taken to an interrogation centre for several days.
e. The [1949] Third Geneva Convention relative to the Treatment of Prisoners of War contains detailed provisions on other correspondence (at least two letters and four cards a month), censorship … . 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 56.a–e.
Peru’s IHL and Human Rights Manual (2010) states:
a. No later than one week after arrival at the camp, every prisoner of war must be allowed to send a capture card to his family and another to the ICRC’s Central Tracing Agency, informing them of his capture, address and state of health.
b. The same applies when a prisoner of war is transferred to a hospital or another camp.
c. The purpose of this requirement is to inform the outside world of the whereabouts and situation of prisoners of war.
d. It is not necessary to allow a prisoner of war to send a capture card for a temporary absence from the camp, for example, if he is taken to an interrogation centre for several days.
e. The [1949] Third Geneva Convention relative to the Treatment of Prisoners of War contains detailed provisions on other correspondence (at least two letters and four cards a month), censorship … . 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 57, pp. 262–263.