A unit in the context of a military organization is a group of soldiers, with specified equipment, under a specific chain of command. A unit generally has one commander, the Commanding Officer, and is composed of sub-units.
All but the very smallest have a headquarters organization, which will contain both staff for planning and controlling operations, and often combat support and combat service support sub-units to support the main role. Some units may have specialized combat arms units under the direct control of the commander, such as artillery.
Units in land forces
|Name||Personnel||NATO command rank||U.S. command rank|
|fire team||3-5||OR-4 to OR-5||E-4 to E-5|
|squad (land forces)||10-13||OR-4 to OR-6||E-6 to E-7|
|platoon (land forces)||20-40||OF-1||O-1|
|company (land forces)/troop/battery (military unit)||100-200||OF-3 to OF-4||O-3 to O-4|
|battalion/squadron (land forces)/squadron (air forces)||500-1000||OF-5||O-5|
|regiment/group (land forces)/group (air forces)/brigade||3000-5000||OF-6 to OF-7||O-6|
|corps||30000-75000||OF-8||O-8 to O-9|
|field army||100000-300000||OF-9||O-9 to O-10|
Due to variation in ship sizes and types, it is more difficult to assign numbers.
- Task unit
- Task group
- Task force