This might actually be useful. The Marines have the joke as crayon eaters but they raised their reqs a few times now. If you don't qualify to actually use a gun, you can't be a marine.

Buuutttt, the useless private sent on a suicide run is now impossible. So, send the crazy guy who thinks he's a girl and is constantly threatening suicide up the hill so the rest of the unit can spot the sniper. Problem solved.

Suddenly the movie Suicide Squad being promoted makes sense. Half the unit thinks they're Harlequin, and charges the hill like there's delicious paint chips at the top, fully knowing they're on a suicide mission makes exactly what you need in a lot of tactical maneuvers.