His country was at war and young Will told his classmates, "No way I'm being left behind!" He immediately quit his last year of high school and signed up.
Newly assigned to an infantry unit on its first charge at the enemy, he hadn't properly secured his helmet and it fell off in his rush. He made a quick turn about to retrieve it but, as he bent over to pick it up, a mortar exploded to his rear, badly damaging his right leg and blowing off his right flank.
Sometimes, no matter how determined you are, fate mocks you...
not only had the enemy gunners been ordered to, "Fire at will!" but, now, Will was with the left behind.