fire(-fire) 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

slant fire; diagonal fire; oblique fire; fire to the oblique

air defense fire unit

fire-and-safe unit

fire protection unit

unit of fire

fire brigade unit

fire delivery unit

fire unit

fire unit analyzer

single fire unit

atomic fire unit

fire control orders (FCO) ('Hold Fire', 'Cease Fire' and 'Engage')

selector lever, fire selector, fire switch, fire selector switch

administrative support unit

air assault infantry 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