| No. 40 Squadron RAF | |
|---|---|
 | |
| Active | 26 February 1916 - 4 July 1919 1 April 1931 – 1 April 1947, 1 December 1947 – 15 March 1950, 28 December 1953 – 1 February 1957 |
| Country |  United Kingdom |
| Branch |  Royal Air Force |
| Motto(s) | Latin: Hostem acolo expellere ("To drive the enemy from the sky")[1] |
| Insignia | |
| Squadron Badge heraldry | A broom. The broom was chosen to immortalise the frequent exhortation of Major 'Mick' Mannock, the famous World War I pilot, who served with the squadron, to "sweep the Huns from the air!" |
| Squadron Codes | OX Oct 1938 – Sep 1939 BL Sep 1939 – Apr 1947 LE Jun 1949 – Mar 1950 |
No. 40 Squadron of the Royal Air Force was formed in 1916 at Gosport as No. 40 Squadron Royal Flying Corps and was disbanded for the last time in 1957. The squadron also included many non-British members, including volunteers from the Royal Australian Air Force and Royal Canadian Air Force.