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Militarism or militarist ideology - the ideology of government as best served when under military control

Military occupation, when a country or area is occupied after invasion.

List of military occupations

Martial law, where military authority takes over normal administration of law

Police state, where a government maintains strict control over the population

Military law, the legal system applying to members of the armed forces

Military dictatorship, a form of government where political power resides with the military

Military tribunal

When a military applies a court-martial and nonjudicial punishment

When specific laws are applied in a military context as in the United States Uniform Code of Military Justice by the Judge Advocate General's Corps (JAG)