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Mexico
Practice Relating to Rule 88. Non-Discrimination
Mexico’s Army and Air Force Manual (2009), in a section entitled “Basic rules of international humanitarian law applicable in armed conflicts”, states: “Persons placed hors de combat and those who do not take a direct part in hostilities … must be protected and treated humanely in all circumstances, without any adverse distinction.” 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 406; see also § 83.
The manual also states that Article 3 common to the 1949 Geneva Conventions “stipulates that in the event of armed conflict, protected persons must be treated humanely in all circumstances, without any adverse distinction founded on race, colour, religion or faith, sex, birth, wealth or any other such criteria.” 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 73; see also § 85(A) and § 107(A).
Mexico’s Army and Air Force Manual (2009) states: “According to the provisions of … [the 1949 Geneva] Conventions, non-combatants, members of merchant marine and civil aircraft crews … must not be discriminated against on the grounds of religion, nationality or political opinions.” 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 73.
Mexico’s Army and Air Force Manual (2009) states: “According to the provisions of these Conventions, … the sick and the wounded must be respected and protected by the party in whose power they are and must not be discriminated against on the grounds of religion, nationality or political opinions.” 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 73.