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A sergeant major is a senior non-commissioned officer or warrant officer, depending on the country and military service in question.
Sergeant Major insignia
(U.S. Army)
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 Master Sergeant, with a pay grade of E-9.
Command
Sergeant Major insignia
(U.S. Army)
The administrative 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.
An alternate 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 Master Sergeant.
Sergeant Major of the
Army insignia
(U.S. Army)
There exists one post, Sergeant Major of the Army, which is unique. The holder of this post is the senior enlisted member of the U.S. Army. The current SMA, since January 2004, is SMA Kenneth O. Preston.
Sergeant Major
of the Marine Corps
(U.S. Marine Corps)
insignia
Sergeant Major
(U.S. Marine Corps)
insignia
In the United States Marine Corps, Sergeant Major is the ninth and highest enlisted rank, just above Master Sergeant, and equal in grade to Master Gunnery Sergeant, although the two have different reponsibilities. It is not an administrative position (or "billet"); it is a military rank only.
There exists one post, Sergeant Major of the Marine Corps, which is unique. The holder of this post is the senior enlisted member of the U.S. Marine Corps. This position is currently held by John L. Estrada.
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U.S. military enlisted rank s | |||||||||
| E-1 | E-2 | E-3 | E-4 | E-5 | E-6 | E-7 | E-8 | E-9 | |
|---|---|---|---|---|---|---|---|---|---|
| Air Force: | AB | Amn | A1C | SRA | SSgt | TSgt | MSgt | SMSgt | CMSgt - CMSgt - CMSgtAF |
| Army: | PV1 | PV2 | PFC | SPC - CPL | SGT | SSG | SFC | MSG - 1SG | SGM - CSM - SMA |
| Marine Corps: | Pvt | PFC | LCpl | Cpl | Sgt | SSgt | GySgt | MSgt - 1st Sgt | MGySgt - SgtMaj - SMOMC |
| Navy: | SR | SA | SN | PO3 | PO2 | PO1 | CPO | SCPO | MCPO - CMCPO - MCPON |