close combat optic (CCO)

Chief of Combat Operations (CCO)

close-quarters combat (CQC) / close-quarters battle (CQB)

electro-optic/infrared (EO/IR)

bio-optic synthetic system

best-fit optic Z-plane

fiber-optic helmet-mounted display

fiber-optic communication

fiber-optic transmitter

close combat

close combat attack (CCA)

atomic close-range combat

dismounted close combat (DCC)

Dismounted Close Combat Trainer (DCCT)

close-range combat situation

combat-loaded weight / combat loaded weight

combat trouser belt, combat belt

air combat / air-combat

Future Combat Air System (FCAS) / (фр.) Système de combat aérien futur (SCAF)

at close quarters

close air support (CAS)

close air support mission

close approach

close column

close defensive fire

close engagement

close envelopment

close observation

close operations

close political-military communication

close support

close support aircraft

close supporting fire