air base service unit

base junction; rotary collector ring (box); rotary base junction (of a tank); rotary connection; slip ring; traverse rotary base junction

air force base unit

defense industrial base / military-industrial base

naval base; naval operating base

air force base (AFB)

seagoing air base

Selfridge Air National Guard Base (SANGB)

Coast Guard air base

combat air base

air base

air base area

air base group

air base line

air force base

battery coolant unit / battery-coolant unit (BCU)

gear reduction unit / gear-reduction unit

position and navigation unit / position navigation unit (PNU)

pinch (a unit) out of a large unit

quartering service / unit

search and rescue service unit

carrier aircraft service unit

service unit

branch (military/service branch, armed service)

separate from active service / the service

Y service (Y-service) / Y-station

regional meteorological service/ regional weather service (RWS)

emergency service / emergency operations service

aerial refueling / air refueling / in-flight refueling (IFR) / air-to-air refueling (AAR)

air combat capable helicopter / air-to-air capable helicopter

air support field pack, field pack air support, airborne / para (air support) / Pathfinder Bergen

air assault infantry unit

air defense fire unit