commissariat -
The department of an army that supplies provisions for the troops.
commissariat -
A department of the government of the Soviet Union in the early period of its existence.
Wikipedia
A commissariat is the department of an army charged with the provision of supplies, both food and forage, for the troops. The supply of military stores such as ammunition is not included in the duties of a commissariat. In almost every army the duties of transport and supply are performed by the same corps of departmental troops.