Соответствующая норма
Mexico
Practice Relating to Rule 112. Search for and Collection of the Dead
Mexico’s Army and Air Force Manual (2009), in a section on the 1949 Geneva Convention II, states: “After each engagement, parties to the conflict … must search for the dead”. 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 118.