Servicemen in the military that don't do anything productive except clean and do landscaping work while they wait to be trained. Duties include raking lines in sand, police calls in parking lots, and other useless chores for the military.
Private 1: I signed up to shoot shit. Why the hell am I raking sand?
Private 2: Get used to it, kid. You're a combat custodian now. Attack the ground aggressively!!!