- German New Guinea and surrounding Colonies capitulate to Australian Expeditionary Force
- Serbian forces in Syrmia withdraw. Semlin is evacuated.
- Admiral Souchon of the Imperial German Navy assumes control of the Turkish Navy
- The “Race to the Sea” begins; the German, French and British armies move north from the Aisne and try to outflank each other. The offensive continues until 16 October when the lines reach the Belgian coast.
17 September 1914
