Typical Military Units

Name.....Number of Troops....Number of Sub Units...Officer in charge
Corps.........30,000+.................Varies....................Lieutenant General
Division......10,000-20,000......4 Brigades..............Major General
Brigade.......2,000-5,000..........2+ Regiments..........Brigadier General
Regiment.....U.K. 650+..............1+ Battalion............Brigadier or Colonel
Battalion......300-1,000............2-6 Companies.........Lieutenant Colonel
Company.....150-300................6 Platooons.............Captain
Platoon........30-40....................2+ Squads...............First or Second Lt. Squad..........12...........................2+ Fireteams..........NCO--Staff Sgt
Fireteam......5..............................N/A......................NCO--Sgt