Calvin Leon Graham (April 3, 1930–November 6, 1992) was the youngest U.S. serviceman, during World War II.[2] Following the attack on Pearl Harbor, he enlisted in the Navy in May 1942, at the age of 12. He was wounded at the Naval Battle of Guadalcanal, while serving aboard USS South Dakota. During the battle, he helped in the fire control efforts aboard the South Dakota, but suffered fragmentation wounds in the process. For his actions he was awarded the Bronze Star and the Purple Heart.

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