Sergeant Archambeault was a member of Company L, 3rd Battalion, 8th Cavalry Regiment, 1st Cavalry Division. He was listed as Missing in Action while fighting the enemy near Unsan, North Korea on November 2, 1950. He was presumed dead on December 31, 1953. His name is permanently inscribed on the Courts of the Missing at the Honolulu Memorial. SGT Archambeault's were recovered and then identified 2014.