On May 7, 1949, changed the designation of Arnold's final rank and grade to that of General of the Air Force, and he remains the only person to have held the rank.
All three of Arnold's surviving sons were graduates of West Point (Henry Harley Jr., 1939;[REF][REF] Willam Bruce, June 1943;[REF][REF] and David Lee, 1949[REF][REF]) and reached the grade of colonel.