Military districts are formations of a state's armed forces which are responsible for a certain area of territory. They are often more responsible for administrative than operational matters, and in countries with conscript forces, often handle parts of the conscription cycle.

The Indonesian Army is the land branch of the Indonesian National Armed Forces. It has an estimated strength of 300,400 active personnel. The history of the Indonesian Army has its roots in 1945 when the Tentara Keamanan Rakyat (TKR) "People's Security Forces" first emerged as a paramilitary and police corps.