див. reduce obstacles
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 defenses
reduce a salient
reduce obstacles
reduce to shambles
antiboat obstacle
antipersonnel obstacle
antipersonnel obstacle breaching system (APOBS)
antitank obstacle
antivehicular obstacle
artificial obstacle
barbed wire obstacle
beach obstacle
composite obstacle
concrete obstacle
demolish an obstacle
incendiary obstacle
log obstacle
man-made obstacle
mine obstacle
natural obstacle
obstacle belt/ course
obstacle development