least engaged unit

частина (підрозділ), що веде бій із найменшими силами супротивника; частина (підрозділ), на яку супротивник чинить найменший вплив

least mass design

be engaged in the attack

license for facilities engaged in the manufacture, storage, and use of explosives, hazardous chemicals or substances posing a fire / explosive hazard

heavily engaged by enemy tanks

be hotly engaged

become decisively engaged

heavily engaged

vessel engaged on pilotage duty

decisively engaged

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

administrative support unit

air assault infantry unit

air defense fire unit

air filtration unit

armored cavalry unit

auxiliary power unit (APU)