Mediterranean: 3 Royal Navy S-class small submarines transferred to Italian Navy.
Baltic: 3 more Royal Navy E-class submarines have reached Reval.
Kitchener announces that 11 New Army divisions have been sent to France and BEF now hold additional 17 miles of French front.
Western Russia: German cavalry occupy Vileika and Krivichi on railway east of Vilna (infantry arrives on September 18, but Russians retake it on September 26-27); 4 squadrons raid to Borisov on river Beresina.
Baltic Provinces: Russian Twelfth Army retreats to river Dvina covered by cavalry rearguard actions.
Gallipoli: Kemal Pasha (Atatürk) in staff car east of Suvla narrowly escapes injury by RNAS Nieuport (Samson) bombing.
Britain: Munitions Ministry issues profit limitation rules. House of Commons fourth 1915 war credit vote.
Turkey: National Assembly first reopens.