gaps in the enemy lines

fire through gaps in the friendly lines

gaps in the friendly lines

exterior lines (див. interior lines)

interior lines (див. exterior lines)

reconnaissance behind enemy lines

roll up enemy lines

go behind enemy lines

lines open to the enemy

get behind enemy lines

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

alternative lines of communication

heavy-tonnage lines of communications