AA – Anti-aircraft fire; also commonly referred to as Ack Ack
A/C – aircraft
AOC – Air Officer Commanding
ARP – Air Raid Precautions
AM – Air Marshal
ACM – Air Chief Marshal
AVM – Air Vice Marshal
BEF – British Expeditionary Force
Cpl – Corporal
CO – Commanding Officer
DFC – Distinguished Flying Cross
DSO – Distinguished Service Order
Do17 – Dornier 17
e/a – enemy aircraft
ERKs – Ground Crew
FAA – Fleet Air Arm
Flt Lt – Flight Lieutenant
F/L – Flight Lieutenant
Fg Off – Flying Officer
FO – Flying Officer
GPO – General Post Office
He111 – Heinkel 111
Ju87 – Junkers 87 – Stuka
Ju88 – Junkers 88
LDV – Local Defence Volunteer
MAP – Ministry of Aircraft Production
MC – Military Cross
Me109 – Messerschmitt Bf 109
Me110 – Messerschmitt Bf 110
MM – Military Medal
NCO – Non Commissioned Officer
OTU – Operational Training Unit
PO – Pilot Officer
P/O – Pilot Officer
POW – Prisoner of War
RADAR – Radio Detection and Ranging
RAAF – Royal Australian Air Force
RAF – Royal Air Force
RAFVR – Royal Air Force Volunteer Reserve
RCAF – Royal Canadian Air Force
RDF – Radio Direction Finding
RFC – Royal Flying Corps
RNAS – Royal Naval Air Service
RN – Royal Navy
R/T – Radio Telephony
Sgt – Sergeant
Sqdn Ldr – Squadron Leader
S/L – Squadron Leader
WAAF – Women’s Auxiliary Air Force
WO – Warrant Officer