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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)
FA
Field Ambulance
FAA
Fleet Air Arm
FAB
Field Artillery Brigade (South African and Australian)
F AMB
Field Ambulance
FANY
First Aid Nursing Yeomanry
FAU
Friends Ambulance Unit
FCEAIF
Fortress Company Engineers Australian Imperial Force
FD
Field
FEAF
Far East Air Force
FEPOW
Far East Prisoner of War
FGCM
Field General Court Martial
FGA
Frontier Garrison Artillery (Indian)
FGH
Fort Garry Horse (Canadian)
FG OFF
Flying Officer (RAF)
F/L
Flight Lieutenant (RAF)
FLD BKY
Field Bakery
F/LT
Flight Lieutenant (RAF)
FLT LT
Flight Lieutenant (RAF)
FLT S LT
Flight Sub Lieutenant (RN)
FMN
Fireman (Merchant Fleet Auxiliary)
FMSVF
Federated Malay States Volunteer Force
FO
Flag Officer (RN)
F/O
Flying Officer (RAF)
FONAC
Flag Officer Naval Air Command (RN)
FPO
Field Post Office
FR CONSTAB
Frontier Constabulary (Indian)
F/S
Flight Sergeant (RAF)
F SGT
Flight Sergeant (RAF)
FT CDT
Flight Cadet (RAF)
FT PAYR
Fleet Paymaster (RN)
FTR
Failed to Return (RAF)
FTS
Flying Training School (RAF)
FWN
Forewoman (NCO grade in QMAAC)
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