Or Sgt. York.
Even unarmed - one who is familiar with arms and familiar with small arms fire is in a better mental situation to deal with an armed person than one who think that a gun is a kill machine and getting hit = being dead.
Diving into freezing waters sounds like one heck of a good idea when the alternative is huddling together waiting for a bullet.
I believe that the faith of Sgt. York allowed him to return to society after the war more psychologically adjusted than Audie Murphy.
It’s interesting that Sgt. York’s faith almost kept him out of the fighting all together.