Interesting side story about Sen. Daniel K. Inouye. He lost his arm charging a machine gun nest in Italy during WW2. His arm was blown off just as he was about to throw a grenade. He had already pulled the pin. So he looked down at his severed arm - pried the grenade out of his hand and threw it - killing the members of the machine gun nest. He picked up his weapon and continued to fire at the enemy until other members of his squad convinced him to sit down and get medical attention.

I just thought someone may find that story of interest. It was realted in the recent Ken Burns documentry.