Yeah we had somebody do something like this... In Afghanistan!
Guy went on a short convoy from one PB (patrol base) to another PB just down the road. Finished their crap and were back on the road when they received a radio call "Uh (won't mention the persons name), where's your rifle?"
Wasn't there to see it personally but I'm sure he had to clean his cammies after that one. I also know of a 2LT platoon commander who got relieved of his command for doing the same thing.
NCO of Marines, 3rd Award Expert Rifle, 236 KD Range
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011
REV. 19:11 And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war.