Related Rule
Peru
Practice Relating to Rule 36. Demilitarized Zones
Section A. Establishment of demilitarized zones
Peru’s IHL Manual (2004) defines the term “demilitarized zone” as:
Any zone fulfilling the following requirements:
a. all combatants, weapons and military equipment have been removed;
b. no hostile use is made of fixed military installations or establishments;
c. no acts of hostility are committed by the authorities or the population;
d. any activity linked to the military effort has ceased. 
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; see also § 100.f.
The manual further states:
When appropriate, special agreements should be made between the parties to the conflict or with neutral States in order to:
(a) locate certain areas ( … demilitarized zones) at a safe distance from military operations;
(e) permit the marking of … demilitarized zones with distinctive signs. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 25.b.(2)(a) and (e); see also §§ 27.h.(1).(c) and 104.c.
Peru’s IHL and Human Rights Manual (2010) defines “Demilitarized Zones” in its Glossary of Terms as:
Any zone fulfilling the following requirements:
a. all combatants, weapons and military equipment have been removed;
b. no hostile use is made of fixed military installations or establishments;
c. no acts of hostility are committed by the authorities or the civilian population;
d. any activity linked to the military effort has ceased. 
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. 418.
The manual also states:
[The following] … zones shall be established by agreements between the parties to the conflict, or can be recognized internationally as:
(c) Demilitarized Zones. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 28(h)(c), p. 240–241.
The manual further states:
When appropriate, special agreements should be made between the parties to the conflict or with neutral States in order to:
(e) Allow the marking with distinctive emblems of … demilitarized zones. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 26(2)(e), p. 233; see also § 92(b)(5), p. 294.