Sergeant First Class Linn was a member of Company D, 1st Battalion, 38th Infantry Regiment, 2nd Infantry Division. He was taken Prisoner of War while fighting the enemy near Hoengsong, South Korea on February 12, 1951 and died while a prisoner on May 1, 1951. His remains were not recovered. His name is inscribed on the Courts of the Missing at the Honolulu Memorial.