lines open to the enemy

open burning and open detonation (OBOD) (= open-pit)

exterior lines (див. interior lines)

interior lines (див. exterior lines)

open country / open ground

reconnaissance behind enemy lines

roll up enemy lines

go behind enemy lines

gaps in the enemy lines

get behind enemy lines

stealth sneaking behind enemy lines

courses open to the enemy

overwhelm an enemy / overwhelm the enemy

air lines of communication (ALOC)

disruption of lines of communication

electric power lines

friendly lines

ground lines of communication (GLOC)

gun lines

in the lines

interior lines of communication

interval of grid lines

lines of communication (LOC)

lines of withdrawal

passage of forward lines

passage of rearward lines

stadia lines (hairs, mark)

dividing lines

disrupt supply lines

forward friendly lines passage

forward passage of lines (FPOL)

intertheater lines of communications

most likely lines of deployment