Corporal Denny was a member of Company B, 1st Battalion, 9th Infantry Regiment, 2nd Infantry Division. He was seriously wounded by the enemy in South Korea on August 16, 1950 and returned to duty August 30, 1950. He was listed as Missing in Action while fighting the enemy in Korea on November 30, 1950. He was presumed dead on December 31, 1953. His remains were recovered in October 16, 2000 and identified on January 22, 2010. His name is inscribed on the Courts of the Missing at the Honolulu Memorial.