القاعدة ذات الصلة
Peru
Practice Relating to Rule 15. The Principle of Precautions in Attack
Section D. Information required for deciding upon precautions in attack
Peru’s IHL Manual (2004) states:
In order to fulfil their mission, commanders require reliable information on the enemy and the area of action.
(1) To ensure that the mission is carried out in accordance with international humanitarian law, the information must include intelligence on:
(a) concentrations of civilians;
(b) civilians and civilian objects in the vicinity of military objectives;
(c) nature of urban areas (cities, villages, shelters, etc.);
(d) existence and nature of important civilian objects, particularly specifically protected objects;
(e) natural environment.
(2) It should be taken into account that a distinction must be made between permitted and prohibited methods of gathering information. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 27.b.
The manual further states: “The commander must draw up a list of all objects in the area under his responsibility in order to verify which of them are military objectives and which of them are protected civilian objects and persons under international humanitarian law.” 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 99.
Peru’s IHL and Human Rights Manual (2010) states:
In order to fulfil their mission, commanders require adequate information on the enemy and the area of action.
(1) To comply with International Humanitarian Law, the information must include:
(a) Concentrations of civilians.
(b) The civilian environment of military objectives.
(c) The nature of urban areas (cities, villages, shelters, etc.).
(d) The existence and nature of important civilian objects, particularly specifically protected objects.
(e) The natural environment.
(2) It should be taken into account that a distinction must be made between permitted and prohibited methods of gathering information. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 30(b), p. 237.
The manual also states: “The commander must draw up a list of all objects in the area under his responsibility in order to verify them in accordance with international humanitarian law, distinguishing between military objectives and protected civilians and civilian objects.” 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 90, p. 291.