Corporal Hendrickson was a member of Headquarters Battery, 57th Field Artillery Battalion, 7th Infantry Division. He was listed as Missing in Action while fighting the enemy near Hagaru, North Korea on December 6, 1950. He was presumed dead on December 31, 1953. His remains have been recovered and identified. CPL Hendrickson's name is permanently inscribed on the Courts of the Missing at the Honolulu Memorial.