القاعدة ذات الصلة
Mexico
Practice Relating to Rule 1. The Principle of Distinction between Civilians and Combatants
Section A. The principle of distinction
Mexico’s Army and Air Force Manual (2009), in a section on the 1977 Additional Protocol I, states: “The parties to a conflict must always distinguish between civilians and combatants.” 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 260.
In a section titled “Fundamental norms of international humanitarian law applicable in armed conflicts”, the manual also states: “Parties to a conflict must distinguish between the civilian population and combatants at all times in order to spare the civilian population.” 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 412.