Règle correspondante
Mexico
Practice Relating to Rule 4. Definition of Armed Forces
Mexico’s Army and Air Force Manual (2009), in a section providing an overview of the 1949 Geneva Convention III, states:
The term “armed forces” or “regular armed forces” covers only those formed in accordance with domestic legislation and recognized by the government in power at the time. Members of “other militia” are not therefore considered to form part of the regular establishment. 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 144.