forward defensive line

assume a defensive / assume the defensive

forward defensive position

defensive belt / line

main defense area (line) / main defensive position

forward observer (FO), forward observation officer; (artillery) observer / spotter

deployment line; line of deployment (LD); line of departure

forward front-line deployment

forward line of own troops (FLOT)

line of the forward positions

assuming a defensive

close defensive fire

close-in defensive fire

defensive area

defensive electronic warfare

defensive fire (DF)

defensive maneuvre

defensive measures

defensive mine countermeasures

defensive minefield

defensive operations

defensive position

defensive posture

defensive power

defensive war / warfare

integrity of the defensive system

sector of defensive responsibility

defensive grenade

defensive military doctrine

defensive thrust

fixed defensive fire

defensive guided weapon

defensive layout / lay-out