Military Units
To help readers understand troop strength of the military units discussed in these pages, we offer the following table. The table below list the order of military unit names by troop strength and is based on the definitions of today's U.S. Army units. The names of military units and the number of personnel assigned to those units varies with the point in history and places referenced.
Unit |
Number of Personnel | Composition |
Commander |
Army |
100,000 |
2 or more corps, headquarters |
General |
Corps |
30,000 or more |
2 or more divisions |
Lt. General |
Division |
15,000 or more |
3 brigades, headquarters, support units |
Maj. General |
Brigade |
4,500 or more |
3 or more regiments, headquarters |
Brig. General |
Regiment |
1,500 or more |
2 or more battalions, headquarters |
Colonel |
Battalion |
700 |
4 or more companies, headquarters |
Lt. Colonel |
Company |
175 |
4 platoons, headquarters |
Captain |
Platoon |
40 |
4 squads |
Lieutenant |
Squad |
10 |
Staff Sergeant |