Operational Command

Operational Command 

a large organizational unit of an armed service, consisting of large and small units of various combat arms (forces), special troops, command elements, and logistic and other services. The operational command is designed to wage independent or combined operations.

Among the operational commands are the front, consisting of several armies (in the armed forces of the USA, Great Britain, and others the group of armies corresponds to the front as an operational command); the army, which consists of several large units (brigades and divisions and, in foreign armies, corps), and units of special forces; the fleet, which includes large units of surface ships and submarines, air forces, coastal defense, and naval bases; the flotilla, which may consist of mixed forces; and the air defense district, which is composed of various types of units.