Men of HMAS Encounter on board the damaged German raider SMS Seeadler. HMAS Encounter is in the background, 1917. Image courtesy Australian War Memorial.
- Australian battle cruiser HMAS Encounter destroys the guns on the wreck of the German raider SMS Seeadler off the island of Mopelia in French Polynesia
- British and French troops arrive in Italy in an attempt to reduce the number of Austrian victories
