Article 11 of the Law of Discipline of the Mexican Army, Air Force and National Guard reads: “El militar se abstendrá de murmurar con motivo de las disposiciones superiores o de las obligaciones” (A soldier shall refrain from grumbling about the orders of superiors or about duties). Article 3 names the bases of military discipline: “la obediencia, y un alto concepto del honor” (obedience and a high concept of honor).
Article 14 sets a limit. It forbids a soldier to give orders whose execution would be a crime.