. "Graham, Calvin"@en . "1992Z"^^ . . . "United States Marine" . . . "Calvin Leon Graham (April 3, 1930 \u2013 November 6, 1992) was the youngest U.S. serviceman to serve and fight during World War II. Following the attack on Pearl Harbor, he enlisted in the United States Navy from Houston, Texas on August 15, 1942, at the age of 12."@en . . "1992-11-06Z"^^ . . . "1942Z"^^ . . . "1930-04-03Z"^^ . "1943Z"^^ . "Calvin Leon Graham"@en . . "1930Z"^^ . "United States of America" . .