Originally posted by: Proprioceptive
For starters
1) The squad is the smallest unit, consisting of 8 to 10 Soldiers. The squad leader is an NCO.
(2) The platoon includes the platoon leader (2LT/1LT), platoon sergeant (SFC), and two or more squads.
(3) The company includes the company commander (CPT), first sergeant (1 SG) a headquarters, and two or more platoons.
(4) The battalion includes the battalion commander (LTC), his staff and headquarters, the command sergeant major (CSM) and approximately 3-5 companies.
(5) The brigade includes the brigade commander (COL), command sergeant major, a headquarters, and approximately 3-6 battalions.
(6) The division structure is the capstone element of our Army. It includes three maneuver (armor or infantry) brigades as well as several combat support and service support brigades or battalions. There are currently 10 active divisions, each commanded by a major general (two-stars).
(7) Organizations higher than the division include the Corps, Army, Major Command (MACOM), and in times of war, the Theater.