Sergeant First Class Smith was a member of Company I, 3rd Battalion, 187th Airborne Infantry Regimental Combat Team. He was listed as Missing in Action while fighting the enemy in North Korea on 21 October 1950. He was presumed dead on 31 December 1953. His remains were not recovered. His name is inscribed on the Courts of the Missing at the Honolulu Memorial.

Smith was awarded the Purple Heart, the Combat Infantryman's Badge, the Korean Service Medal, the United Nations Service Medal, the National Defense Service Medal, the Korean Presidential Unit Citation and the Republic of Korea War Service Medal.