| Name | No. of personnel | No. of subordinate units | Officer in charge |
|---|---|---|---|
| Army Group | Many | 2+ armies | General or Field Marshal |
| Army | Many | 2+ corps | General |
| Corps | 30,000+ | 2+ divisions | Lieutenant General |
| Division | 10,000-20,000 | 2-4 brigades | Major General |
| Brigade | 2000-5000 | 2+ regiments or 3-6 battalions |
Brigadier General, Brigadier (UK) or Colonel (US Army) |
| Regiment (USMC) | ? | 4 battalions | Colonel |
| Regiment (UK) | 500-700 | 4-6 squadrons | Lieutenant Colonel |
| Battalion | 300-1000 | 2-6 companies | Lieutenant Colonel |
| Company or Squadron | 100-300 | 3-6 platoons or troops | Captain or Major |
| Platoon or Troop | 30-40 | 2+ squads or sections | First or Second Lieutenant |
| Squad or Section | 8-12 | 2+ fireteams | NCO (Corporal to Staff Sergeant) |
| Fireteam | 4-5 | n/a | NCO (Lance Corporal to Sergeant) |
Thanks for the breakdown. Trying to figure out here how many soldiers in some of the groups we are sending to.