In the U.S. Army, Sergeant Major refers to both a military rank and to a specific administrative position. The rank refers to the highest enlisted rank, just above
First Sergeant, with a pay grade of E-9. The leadership position,
Command Sergeant Major, is the senior enlisted advisor to the commanding officer and carries with it certain ceremonial functions such as caring for the unit's colors. Additionally, they serve as monitors for, and advocates of, the enlisted men in the command. This position exists in units of battalion size and larger.
E-9 COMM insignia
Command
Sergeant Major insignia
(U.S. Army)
An alternative usage of Command Sergeant Major is the senior NCO of a headquarters unit at battalion level or above; the soldier filling this position should carry the rank of Sergeant Major, but personnel shortages may, from time to time, force this sergeant major position to be held by a senior First Sergeant or Master Sergeant both E-8.
A Command Sergeant Major is referred to by their subordinates as "Sergeant Major"
Sergeant Major of the Army is a separate and unique position.
