розпочати воєнні / бойові дії
open burning and open detonation (OBOD) (= open-pit)
open country / open ground
cessation of hostilities
embark on hostilities
hostilities
outbreak of hostilities
deter resumption of hostilities
resumption of hostilities
achieve a lasting cessation of hostilities
opening of hostilities
break-open
open arrest
open attack
open barrel sight
open boat
open column
open emplacement
open fire
open flank
open formation
open order
open out
open position
open range
open route
Open Skies Treaty
open source intelligence (OSINT)
open submarine warfare
open time
open weapon emplacement
open wire
open work