Seconed WWII post =)

Here is the next fact.

2. The youngest US serviceman was 12 year old Calvin Graham, USN. He was wounded in combat and given a Dishonorable Discharge for lying about his age. (His benefits were later restored by act of Congress)

Calvin Leon Graham (April 3, 1930 - November 6, 1992) was youngest person ever to enlist in the United States Navy, and the youngest U.S. serviceman during World War II. He enlisted in the Navy at age 12 following the attack on Pearl Harbor.
He was wounded at the Naval Battle of Guadalcanal, while serving aboard the USS South Dakota. During the battle, he helped in the fire control efforts aboard the South Dakota, but suffered shrapnel wounds in the process. For his actions he was awarded the Bronze Star and the Purple Heart. However, his mother later revealed his age, and after spending months in a brig (he was not released until after his sister threatened to contact the newspapers), he was dishonorably discharged for lying about his age and lost his disability benefits.
Graham later joined the United States Marines at age 17, but his service ended about three years later when he fell from a pier and broke his back.[1] Although serving in the Marines qualified him as a veteran, he would spend the rest of his life fighting for medical benefits and a clean record. In 1978, he was finally awarded an honorable discharge, and after writing to Congress and with the approval of President Jimmy Carter, all medals but his Purple Heart were reinstated. He received disability and back pay in 1988.[2][3]
His Purple Heart was finally reinstated and presented to his widow, Mary, nearly two years after his death.[1]