service unit

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

air base 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

adjacent unit

administrative support unit

air assault infantry unit

air defense fire unit

air filtration unit

alarm unit

armored cavalry unit

armored unit

artillery unit

assault unit

attached unit

attacking unit

auxiliary power unit (APU)

blank unit

blasting unit

chemical unit

Civilian Police Unit

cohesive tactical sized unit

cohesive unit