field problem

US Army slang or term for a field exercise that involves spending at least one night in the field. More frequently heard in the gruntier MOSes like Infantry and Combat Engineers.

"I'm a 45 day 45 night field problem" --Mystikal in Round Out Tha Tank

"Naw man, I can't go out tonight. I have to pack my ruck. We've got an ass-out 2-week field problem starting monday." --Joe