defend on a thin line

defend

deter, defend, disrupt & protect against terrorism

defend to the last drop of blood

defend to the last man

thin defense

thin out the field of fire

thin dipole

thin metallic dipole

thin aerofoil section

thin body

thin headed cartridge

thin legitimate cover business

thin-skinned vehicle

thin-wall type shell

thin blade front sight

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

observer-target line (OT line)

scheme trail line (tag line)

armistice demarcation line

beyond line-of-sight (BLOS)

bulk distribution line

cease-fire line (CFL)

combat outpost line

confrontation line

contact line

contamination control line

contour line (contour)

county line

defensive belt / line

delivery line (pipeline)

demarcation line

dismount line