Sapper is a light Army combat engineer, who has mastered the art of patrolling, demolition, and other light fighting commando style tactics. Sappers are bad ass and are equal to, if not better then Rangers. Sappers are often attached to infantry groups or Ranger operations to provide engineer expertise in demolition, booby traps and reconnaissance.
sappers in the breach
"We need that bridge blown."
"Send in the sappers."
"That house is full of booby traps."
"We need a sapper to clear it."