Falkenhayn, Conrad and Colonel Gancev (Bulgaria) sign military convention for crushing of Serbia.
French journalist notes ‘… rumour is confirmed of a great offensive … on the 25th’.
Poland: German general Gallwitz fights three battles until September 17.
Black Sea: First tow coastal U-boats operations; UB7 off Odessa, UB8 off the Crimea.
East Atlantic: British liner Hesperian (32 lives lost) sunk by U20 (Schwieger) 80 miles southwest of Fastnet.
Germany: 40 French aircraft bomb Saarbrücken (German Lorraine barracks bombed at Dieuze and Mörchingen).
USA: ’Archibald’ documents compromise Austrian Ambassador, US demands recall on September 8, granted on September 28.