practice operation

clandestine operation; covert operation

humanitarian operation; humanitarian relief operation (HUMRO)

PZ operation (pick-up zone operation)

noncombatant evacuation operation (NEO); non-combat evacuation operation

acquisition practice

best management practice

best practice

OSCE Best Practice Guide on National Procedures for Stockpile Management and Security

practice alert

practice ammunition

practice bomb

practice cartridge

practice fire

practice grenade

practice ground

practice mine

practice parachute

range practice

weapons practice

battle practice ground

training practice frangible discarding sabot

aiming practice

antisubmarine practice

battle practice target

individual battle practice firing

gallery-practice ammunition

safe practice

safety practice

emission control through operational practice

practice

practice flight

accuracy of practice