Military abbreviations: M

A glossary of military-based abbreviations, acronyms and initials used throughout the First World War, the Second World War and through to present day. The abbreviations are associated with various different nations, primarily the United Kingdom but also including, India, South Africa, USA, New Zealand and Australia. Abbreviations also have a strong focus on various armed forces such as the British Army, Royal Navy and Royal Air Force. Use the browse prefix below to navigate to glossaries beginning with a specific letter.

Contents:  A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z
Abbreviation Definition 1 Definition 2 (if applicable)
M1
Prefix for New Army ASC Mechanical Transport numbers
M2
Prefix for ASC Electricians numbers
MAA
Master at Arms (RN)
MAC
Merchant Ship Aircraft Carrier
Motor Ambulance Convoy
MAD
Military Accounts Department
MANCH R
Manchester Regiment
MAP
Ministry of Aircraft Production
MB
Prefix for Motor Boats RNVR numbers
Mountain Battery (Indian)
MBE
Member of the Order of the British Empire
M B SCOUTS
Mounted Brigade Scouts (South African)
M BTY
Mountain Battery (Indian)
MC
Military Cross
Mule Corps (Indian) Military Constabulary (South African)
MCC
Motor Cycle Corps (South African)
MECH
Mechanician (RN)
MED
Medium
MEF
Mediterranean Expeditionary Force
Middle East Forces
MESO R
Mesopotamian Railways
MFA
Merchant Fleet Auxiliary
MFP
Military Foot Police
MG
Machine Gunner
MGB
Motor Gun Boat
MG BN AIF
Machine Gun Battalion Australian Imperial Force
MGC
Machine Gun Corps
MGC CAV
Machine Gun Corps Cavalry
MG COY
Machine Gun Company
MG SQN
Machine Gun Squadron
MHTS
Mahrattas (Indian)
MI
Mounted Infantry
MID
Midshipman (RN)
Mention in Despatches
MIDD’X R
Middlesex Regiment
MIRS
Military Intelligence Research Section
MK
Militere Konstabelary (South African)
Mark
ML
Motor Launch
M/L
Minelayer
MM
Military Medal
Motor Mechanic – RNVR rank
MMGS
Motor Machine Gun Service
MMP
Military Mounted Police
MMR
Mercantile Marine Reserve
MO
Medical Officer
MOBN
Mobilization
MOB VETY SEC
Mobile Veterinary Section
MOD
Ministry of Defence
MOMBASA DF
Mombasa Defence Force
MON
Monmouthshire Regiment
MPSC
Military Provost Staff Corps
MR
Mounted Rifles
MRAF
Marshal of the Royal Air Force
MS
Mechanical Specials – prefix for Old Army ASC numbers
M/S
Minesweeper
MSM
Meritorious Service Medal
MT
Mechanical Transport
Motor Transport
MTC
Miscellaneous Trades Company (South African)
Mechanised Transport Corps
MTD BDE
Mounted Brigade
MTN BTY
Mountain Battery (Indian)
MU
Maintenance Unit (RAF)
MULE CPS
Mule Corps (Indian)
MUS
Musician
MW TEL O
Marine Wireless Telegraph Operator (RN)
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