Didn't Kerry claim to shoot some kid in the back? The marine can run for president.
In the film "Saving Private Ryan," didn't our soldiers shoot a couple of surrendering Germans after we secured Omaha Beach? I bet that happended a lot in the immediate aftermath of a battle, and that few if any soldiers were court-martialed for it. I bet POW protection only really kicks in after the dust has settled, after the POW's have been formally processed and incarcerated.