Field Marshal
* 23rd of July 1883
† 17th of June 1963
Nickname: Brookie
Nickname: Baron Alanbrooke of Brookeborough (1945-10-19)
Nickname: Viscount Alanbrooke of Brookeborough (1946-01-29)
| 1918-09-20 | Temporary Lieutenant-Colonel |
| 1919-01-01 | Brevet Lieutenant-Colonel |
| 1929-02-04 | Temporary Brigadier |
| 1929-02-26 | Colonel (Dated back to 1923-01-01) |
| 1935-06-01 | Major-General |
| 1938-07-15 | Lieutenant-General (Dated back to 1938-06-27) |
| 1940-07-20 | Acting General |
| 1941-05-07 | General |
| 1944-01-01 | Field Marshal |
| 1918-09-20 | – | 1919-03-31 | General Staff Officer 1, 1st Army [France] |
| 1920-02-25 | – | 1921-04-08 | General Staff Officer 2, 50th Infantry Division |
| 1921-04-09 | – | 1921-07-08 | General Staff Officer 1, Defence Force |
| 1921-07-09 | – | 1922-12-31 | General Staff Officer 2, 50th Infantry Division |
| 1923-01-01 | – | 1927-01-20 | Instructor at Staff College Camberley |
| 1927-XX-XX | – | 1929-XX-XX | Attending the Imperial Defence College |
| 1929-02-04 | – | 1932-03-14 | Commandant of School of Artillery, Larkhill |
| 1932-03-15 | – | 1934-04-06 | Instructor at Imperial Defence College |
| 1934-04-07 | – | 1935-09-30 | Commanding Officer 8th Infantry Brigade |
| 1935-11-08 | – | 1936-08-14 | Inspector of Artillery, War Office |
| 1936-08-15 | – | 1937-11-23 | Director of Military Training, War Office |
| 1937-11-24 | – | 1938-07-14 | General Officer Commanding Mobile Division |
| 1938-07-15 | – | 1939-03-24 | General Officer Commanding Anti-Aircraft Corps |
| 1939-04-01 | – | 1939-07-28 | General Officer Commanding in Chief Anti-Aircraft Command |
| 1939-05-20 | – | 1957-03-01 | Colonel-Commandant, Royal Regiment of Artillery |
| 1939-07-28 | – | 1939-08-31 | General Officer Commanding in Chief Southern Command |
| 1939-09-03 | – | 1940-06-25 | General Officer Commanding II Corps [France] |
| 1940-06-12 | – | 1940-06-18 | Commander in Chief 2nd British Expeditionary Force [France] |
| 1940-06-26 | – | 1940-07-19 | General Officer Commanding in Chief Southern Command |
| 1940-07-20 | – | 1941-12-24 | Commander in Chief Home Force |
| 1940-09-14 | – | 1957-03-01 | Colonel-Commandant, Royal Horse Artillery |
| 1941-12-25 | – | 1946-06-25 | Chief of the Imperial General Staff |
| 1942-09-11 | – | 1946-06-25 | Aide-de-Camp General to the King |
| 1942-11-12 | – | 1951-07-23 | Colonel-Commandant, The Glider Pilot Regiment |
| 1946-08-16 | – | 1957-08-16 | Colonel-Commandant, Honourable Artillery Company, Territorial Army |
| 1946-11-05 | – | 1956-12-01 | Master Gunner at St. James Park |
| 1950-08-01 | – | 1955-08-09 | Constable of the Tower of London |