обов'язкова підготовка (напр. позавійськова підготовка резервістів)
compulsory insurance
compulsory pilotage
pilotage is compulsory
compulsory billeting
compulsory evacuation
compulsory immunization program
compulsory universal military obligation
compulsory military service
drill
drill ammunition
drill and ceremonies
drill cartridge
drill instructor (DI)
grass drill
tactical drill exercise
battle drill(s)
drill munition
meteorological drill
ditching drill
battery drill
combat drill
crew drill
drill order
drill time
elementary gun drill
action drill
aiming drill
wet-net drill
weekend drill (training)
nonpay drill status
close order drill
fire drill