reduce defenses

eliminate / flatter / reduce a bulge

reduce

reduce to the ranks

suppress, obscure, secure, reduce, and assault (SOSRA)

reduce reaction time

reduce heat load on the weapon

reduce emission

reduce hazard

reduce noise

reduce a pocket

reduce a salient

reduce obstacles

reduce an obstacle

reduce to shambles

reduce from rank

reduce in rank

active defenses

breach defenses

crack defenses/the front

defenses

Ground Based Air Defenses (GBAD)

military defenses

outpost defenses

passive defenses

pierce defenses

punch / smash / tear a hole (in the defenses)

disrupt defenses

disrupting defenses

accessory defenses

well-prepared defenses

obliterate defenses

bolster defenses