Two American soldiers have taken cover in a foxhole during an offensive in France during ww2. The enemy fire power is fierce, and they are unable to advance or retreat. Shells are zinging past them like wasps, and errant ricochets unnerve them. Mortar shells explode all around and the two men are sweating lest a shell might land atop of them. As the evening wears on and nerves become frazzled in the stifling heat, one of the men confides that he has to go to the bathroom really bad. ""Number 1 o…