A&GS: Armament & Gunnery School
A&IEU: Armament & Instrument Experimental Unit
A.C.R.C: Aircrew Receiving Centre
A/C: Aircraft
A/Cdre: Air Commodore
A/S: antisubmarine
AA: Air Attache
AA: antiaircraft
AAC: Anti Aircraft Co-operation
AAC: Army Air Corps
AACC: Army Air Corps Center
AACF: Anti-aircraft Co-operation Flight
AACTDC: Army Air Corpse Tactical Development Center
AACU: Anti-aircraft Co-operation Unit
AAEE: Aeroplane and Armament Experimental Establishment
AAF: Anti Aircraft Flight
AAF: Auxiliary Air Force
AAFCE: Allied Air Forces, Central Europe
AAFNE: Allied Air Forces Northern Europe
AAFSE: Allied Air Forces Southern Europe
AAGS: Air Armament & Gas School
AAITS: Airmen Aircrew Initial Training school
AANS: Advanced Air Navigation School
AAP: Air to air Missile
AAP: Aircraft acceptance Park
AAP: Army Aircraft Park
AAPC: Anti Aircraft Practice Camp
AAR: Air to Air Refueling
AAS: Air Armament School
AATE: Air Armament trials Establishment
AATT&DC: Army Air Transport Training & Development Center
AATTF: Anti-Aircraft and Target Towing Flight
AAU: Air Ambulance Unit
AAU: Aircraft Acceptance Unit
AAU: Aircraft Assembly Unit
AB: Air Base
ABC: Airborne Cigar
ABGS: Air Bombing & Gunnery School
ABTF: Air Bombing Training Flight
AC: Aircraftman