Western Front
Battle of the Somme: British guns detonate German munition dump near Grandcourt. Rawlinson issues orders for third great British assault.
Eastern Front
Brusilov Offensive, Carpathians: Lechitski takes Mt Capel Kapul (5,000 ft) and links with Rumanian Fourth Army on September 12, claim ‘many’ prisoners.
Alexandru Averescu given Third Army.
: Turkish 50th Division (11,979 men with 16 guns and 12 MGs) begins taking over Drama seaward sector of Bulgarian line.
British troops in Greece cross the Struma River into Bulgaria, capturing four villages.
Asiatic and Egyptian Theaters
Mesopotamia: Brooking’s 1,900 British soldiers (196 casualties) with 14 guns beat c.5,000 Arabs (est 1,200 casualties) at As Sahilan northeast of Nasiriya (Euphrates).
Southern Persia: Sykes reaches Isfahan.
Russia announce the capture of the city of Baneh in Persia from the Ottomans.
Naval and Overseas Operations
Black Sea: Two Bulgarian torpedo boats hit Russian mines of Varna (1 sunk).
Political, etc.
Germany: Kaiser Wilhelm and King Ferdinand of Bulgaria meet to discuss strategy in the Balkan theater of the war.
Russia: General Averyanov to STAVKA: ‘… we are close to complete exhaustion of the manpower reserve’.
Canada: Quebec Bridge collapses during construction, killing 13 workers. The bridge had also collapsed in 1907.
http://imgur.com/h3Bu3Ni
Greece: PM Alexandros Zaimis resigns; Kalogeroulos succeeds on September 16.