Lieutenant-General
* 29th of August 1905
† 1st of December 1968
(USAAF/USAF)
Nickname: Sammy
| 1942-01-05 | Lieutenant-Colonel (Army of the United States)(Air Corps) |
| 1942-02-01 | Lieutenant-Colonel (Army of the United States) |
| 1942-03-01 | Colonel (Army of the United States)(Air Corps) |
| 1944-01-20 | Brigadier-General (Army of the United States) |
| 1945-06-09 | Major |
| 1948-04-02 | Colonel (Army of the United States) |
| 1941-12-25 | – | 1942-07-04 | Assistant Chief of Staff for Personnel (G-1), 3rd Air Force |
| 1942-08-XX | – | 1942-12-10 | Deputy Chief of Staff, 8th Air Force Composite Command [Northern Ireland] |
| 1942-12-11 | – | 1943-07-03 | Deputy Chief of Staff, 8th Air Force [United Kingdom] |
| 1943-07-04 | – | 1943-12-30 | Chief of Staff, 8th Bomber Command [United Kingdom] |
| 1943-12-31 | – | 1944-06-18 | Chief of Staff, 8th Air Force [United Kingdom] |
| 1944-06-19 | – | 1944-09-27 | Deputy Commanding General for Administration 8th Air Force [United Kingdom] |
| 1944-11-17 | – | 1947-01-11 | Deputy Assistant Chief of the Air Staff for Intelligence, Headquarters US Army Air Forces |
| 1947-03-07 | – | 1948-07-27 | Commanding General 24th Composite Wing [Puerto Rico] |
| 1948-07-28 | – | 1949-05-24 | Commanding General Antilles Air Division [Puerto Rico] |
| 1949-06-01 | – | 1951-08-02 | Commandant of the Air Command & Staff School, Air University |
| 1951-08-03 | – | 1951-09-23 | Commandant of the Air War College, Air University |
| 1951-10-05 | – | 1951-11-03 | Special Assistant to the Deputy Chief of Staff for Operations, Headquarters US Air Force |
| 1951-11-01 | – | 1956-07-XX | Director of Intelligence, Headquarters US Air Force |
| 1956-07-XX | – | 1956-11-XX | Deputy Director of the National Security Agency |
| 1956-11-XX | – | 1960-11-23 | Director of the National Security Agency |
| 1960-11-23 | Retired |