- General Sir Percy Lake succeeds General Sir John Nixon as Commander-in-Chief of British and Indian Forces in Mesopotamia
- Leutnant Theodor Mallinckrodt takes the world’s first all-metal aircraft, the Junkers J1 for its only known “high performance” flight test, which consists of a 7 km course, at varying altitudes from 200–300 metres. Mallinckrodt reaches a top speed of 170 km/h.
- Allied warships bombard Porto Lagos in Bulgaria
- Anglo-French forces occupy Ebolowa in the southern Cameroons