Western Front
Battle of the Somme: British advance east of Le Sars towards Butte de Warlencourt, 25th Division captures Stuff Redoubt.
French 320th Infantry Regiment on the road from Bussang to St. Amarin:
http://imgur.com/2yPR3m0* © IWM (Q 58152)
After France published the names of 11 French flying aces, Germany responds by publishing a list of 29 German aces, 7 with 10+ kills.
Eastern Front
Germans take Torzburg (south-west of Kronstadt).
East of Brzezany (Galicia) Austro-German armies assume offensive, fighting on Volhynia front.
Southern Front
Eighth Battle of the Isonzo begins. Italian Second and Third Armies’ 225 battalions; 26 dismounted squadrons; 1,305 guns and 883 mortars against Austro-Hungrian Fifth Army 107 battalions with 538 guns. Bombardment begins.
Trentino: Italians regain north slope of Mt Pasubio, more progress in Vallarsa valley (October 11-15 and 17), repel counter-attacks (October 19); 372 PoWs and 8 guns taken.
Allied forces in Macedonia advance on both wings.
Serbs attack Bulgaria's 3rd and last line of defence in Cherna loop, capture positions at Slivitza; Bulgarians retire north of Brod.
British advanced posts within 5,000 yards of Seres.
Political, etc.
United Kingdom: British Royal Commission on Wheat and Flour Control appointed.
Greece: M. Venizelos arrives at Salonika (see August 30th and September 25th and 29th). Lambros heads new official government.