fire through gaps in the friendly lines

вести вогонь в інтервалах між бойовими порядками своїх військ

gaps in the friendly lines

passage through friendly lines

gaps in the enemy lines

fire within friendly lines

forward friendly lines passage

rearward friendly lines passage

exterior lines (див. interior lines)

interior lines (див. exterior lines)

ozone friendly fire safety system

fire over friendly troops

parallel lines of fire

essential elements of friendly information (EEFI)

friendly aircraft

friendly force information requirements (FFIR)

friendly forces

friendly protector

friendly support

critical friendly zone (CFZ)

friendly air movement message (FAM)

friendly troops movement artillery support

friendly cryptanalyst

friendly forces identification markings

slant fire; diagonal fire; oblique fire; fire to the oblique

air lines of communication (ALOC)

disruption of lines of communication

electric power lines