I have a work buddy that is older than me. He was Marine Reserves. He joined after the end of the 1st Gulf War. Said the older guys told them that when they got over to Iraq they were handed a M-16, a clip, and 3 rounds. Thought he was half joking, but this seems in line with what you are saying.
It is the same crap that got 250 Marines killed in Lebanon. The guys guarding the gate did not have rounds chambered and the Hezbollah folks figured that out.
Heck, I've seen guys have negligent discharges. That just screams "Need more training," not "take the ammo and even the bolts away from Joe."