Western Front
Haig submits a request to War Office for 1,000 tanks.
Battle of the Somme: Bad weather hinders both British and French operations. French repulse counter-attacks east of Clery (night 19/20).
Eastern Front
Brusilov Offensive, Galicia: Shcherbachev’s Seventh Army claims to have taken 25,000 PoWs (including 8,000 Germans) and 22 guns since August 31.
Desperate fighting on Narajowka river, Halicz region. Germans claim success here and on Stokhod (Pripet); ‘many’ prisoners.
Transylvania: Falkenhayn’s Ninth Army attacks Rumanian First Army in Merisor defile, drives it south of Petrosani (September 20), but Rumanian 11th Division counter-attack re-enters town (September 25).
Dobruja: Romanians holding the Rasova-Tuzla position, defending the railway Bucharest-Constanza, heavily engaged.
Southern Front
Macedonia: The Serbo-Russian-French Army advances, making great turning movement in their march on Monastir. Serb Drina Division takes Mt Kajmakcalan‘s 7,769 ft eastern peak but evicted by Bulgars.
Naval and Overseas Operations
French cruiser Jurien de la Graviere coming into Toulon’s dock for inspection and repair:
http://imgur.com/RlUVlDC* © IWM (Q 68331)
Mediterranean: Allies commence blockade of Greek Macedonian coast from mouth of the Struma to mouth of the Mesta (see December 15th, 1915).
East Africa: Belgians occupy Tabora (largest inland town) after 400-mile march, take 2,000 captives and release c.195 interned civilians. 2,700 Portugese invade across river Rovuma, occupy Menasi Bay on September 29. 1st division KAR ford river Mgeta (bridged on September 25) but floods and strong defence restrict bridgehead till December.
Political, etc.
France: Aristide Briand speaks against the dissident socialist faction of the Chamber.
United States: William J. Calhoun, former U.S. diplomat to China, passes away due to a stroke:
http://imgur.com/vlm4vnX
Greece: New Greek PM offers to join Allies and enter war on fixed date as soon as Greek forces helped to prepare.
The Netherlands: Queen Wilhelmina of the Netherlands, during the opening of Parliament, expresses thankfulness for the neutrality of her country in the war.