Master gunnery sergeant

US Marine Corps enlisted grade

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Master Gunnery Sergeant

Master Gunnery Sergeant insignia

Country|  United States
Service branch|  United States Marine Corps
Abbreviation| MGySgt
NATO rank code| OR-9
Pay grade| E-9
Formation| 1958
Next lower rank| Master sergeant
Equivalent ranks| Sergeant major

Master gunnery sergeant (MGySgt) is the 9th and highest technical enlisted grade in the United States Marine Corps. Master gunnery sergeants are staff non-commissioned officers (SNCOs) with the pay grade of E-9.[1] As E-9s, they serve from 15 to 30 years, and advise commanders on technical subjects relating to their occupational specialty.[1] (Sergeant Major is also at the E-9 pay grade with administrative and other duties.)

## Etymology

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Master gunnery sergeants are sometimes referred to by the nicknames "Master Guns" or "Master Gunny". These nicknames are considered unacceptable in formal or ceremonial situations and, at the rank holder's discretion, may also be unacceptable for use by lower-ranking marines.

The master gunnery sergeant insignia consists of an exploding bomb centered vertically between three chevrons and four rockers.

## History

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The grade was derived from another grade unique to the United States Marine Corps, the gunnery sergeant, and has been in use (though not continuously) since the time of the Spanish–American War (April 25 – August 12, 1898).

Establishment of the grade in its current form and pay grade occurred during a sweeping reorganization of grades in 1958 and 1959. The grade was included, along with the grade of Master Sergeant, in a new career path for the pay grades of E-8 and E-9 which allowed senior SNCO billets to be filled by occupational specialists. This move was designed to officially acknowledge the ever-increasing complexity of modern warfare, while still keeping the First Sergeant and sergeant major career paths with their historic command emphasis intact. (During and prior to World War II, this was reversed; the sergeant major at the time was an administrative position, while the master gunnery sergeant was part of the S-3 section and enforced discipline.)

## Modern role

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Master gunnery sergeants (MGySgts) with an infantry Military Occupational Specialty (MOS) serve in the billet of operations chief, as the senior staff non-commissioned officer in the operations section of an infantry battalion, or higher level (e.g., MEU, infantry regiment, MEB, Marine division, or MEF) headquarters. MGySgts with a non-infantry (e.g., artillery, tank, communications, logistics) MOS typically serve as either the operations chief of their MOS type battalion/regiment (e.g., artillery battalion/regiment, tank battalion) or as the section chief/NCOIC in their MOS related staff section (e.g., communications, logistics) at the regimental/Marine Aircraft Group, or higher level, headquarters. Master gunnery sergeants with the Military Police MOS serve in the billet of provost sergeant in the Provost Marshal's Office.

Master gunnery sergeants with an aviation maintenance MOS serve in the billet of maintenance NCOIC/chief in the aircraft maintenance department of a Marine aircraft squadron or in maintenance-related billets at the Marine Air Group (MAG) or Marine Air Wing (MAW) level. For example, there are four aviation-related MGySgt billets (aircraft maintenance NCOIC, aviation supply NCOIC, avionics NCOIC, and aviation ordnance NCOIC) in the Marine Aviation Logistics Squadron (MALS) organic to each Marine Aircraft Group (MAG).

In their annual performance evaluations, called "fitness reports", eligible gunnery sergeants indicate whether they wish to be considered for promotion to master sergeant or first sergeant, and thus whether they enter the promotional track for master gunnery sergeant or sergeant major. Once promoted, the promotional track is usually permanent, with lateral movement between the two programs very uncommon.

One of the major differences between the two E-9 ranks is that master gunnery sergeants retain an occupational field-related MOS, while sergeants major receive a new MOS to reflect their specific command-related focus. This reinforces the master gunnery sergeant's role as a provider of military leadership, technical acumen, and mastery of their MOS. It is also important to note that while a sergeant major and a master gunnery sergeant have different duties and responsibilities, a master gunnery sergeant can (and often does) assume the duties of a sergeant major. The reverse is rarely possible.

## See also

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* Comparative military ranks
* Military rank
* Sergeant
* United States Marine Corps rank insignia

## References

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1. ^ a b "U.S. Military Rank Insignia". U.S. Department of Defense. Retrieved 2024-11-26.

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United States enlisted ranks

Pay grade

Branch of service

| E-1 | E-2 | E-3 | E-4 | E-5 | E-6 | E-7 | E-8 | E-9 | Special

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Army

PVT |
PV2 |
PFC |
SPC – CPL |
SGT |
SSG |
SFC |
MSG – 1SG¹  |
SGM – CSM |
SEANGB – SMA – SEAC
Marine Corps

Pvt |
PFC |
LCpl |
Cpl |
Sgt |
SSgt |
GySgt |
MSgt – 1stSgt¹  |
MGySgt – SgtMaj |
SMMC – SEAC
Navy

SR |
SA |
SN |
PO3 |
PO2 |
PO1 |
CPO |
SCPO – CMDCS |
MCPO – CMDCM – FORCM, FLTCM |
MCPON – SEAC
Air Force

AB |
Amn |
A1C |
SrA |
SSgt |
TSgt |
MSgt – 1st Sgt¹  |
SMSgt – 1st Sgt¹  |
CMSgt – 1st Sgt¹ – CCM |
SEANGB – CMSAF – SEAC
Space Force

Spc1 |
Spc2 |
Spc3 |
Spc4 |
Sgt |
TSgt |
MSgt |
SMSgt |
CMSgt |
CMSSF – SEAC
Coast Guard

SR |
SA |
SN |
PO3 |
PO2 |
PO1 |
CPO |
SCPO |
MCPO – CMC – DMCPOCG2 |
MCPOCG

1. For the Army and Air Force, first sergeants are temporary and lateral ranks and are senior to their non-diamond counterparts, while Marine Corps first sergeants have no lateral movement within paygrade and is a permanent rank.
2. The rank insignia is used by other Coast Guard senior enlisted leaders.

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