| ROYALAIRFORCE | Branch of the British military founded in 1918 by Viscount Trenchard (5,3,5) |
| ESTONIA | This Baltic nation declared itself an independent republic in 1918 - by the end of WWII it had been taken over by Soviet Russia |
| FOURTEEN | ____ Points, set of plans in 1918 by U.S. president Woodrow Wilson for a postwar peace settlement (8) |
| BELGRAVIA | Current television drama by Julian Fellowes which follows the lives of the fictional Trenchard family (9) |
| BRAVADO | Form of courage shown by viscount in resort abroad (7) |
| TAMSINGREIG | Friday Night Dinner star playing Anne Trenchard in Belgravia (6,5) |
| PEEVISH | Fractious rubbish about drugs written by viscount (7) |
| GREIG | Tamsin, actress who played Anne Trenchard in Belgravia (5) |
| JAVA | A joint rolled by viscount close to Etna Island |
| RAF | Flying arm of the British military (1,1,1) |
| STEN | Arm of the British military |
| STENGUN | Arm of the British military |
| ATS | Women's branch of the British Army, formed in 1938 and succeeded in 1949 by the WRAC (3) |
| LYNX | Helicopter used by the British military for 40 years, with a record top speed of 400km/h (4) |
| LASTPOST | In the British military, a bugle call that orders personnel to retire for sleep (4,4) |
| CID | Branch of the British Police force first set up in Nottingham in 1854 (3) |
| ROYALENGINEERS | Branch of the British Army that undertakes the building of fortifications, mines, bridges, etc |
| GINGERBREAD | Charity founded in 1918 as The National Council for the Unmarried Mother and her Child (11) |
| WAFD | Nationalist party in Egypt, founded in 1918 and dissolved in 1953 (4) |
| ECCENTRICCLUB | Cover name used by British military intelligence to offer prize crossword when recruiting for Bletchley Park code-breakers in 1941 |
