Western Front
Battle of the Somme: View of the ruined village of Combles at the Somme:
http://imgur.com/ZeLOAsc* © IWM (Q 58331)
Eastern Front
Transylvania: Falkenhayn's offensive extending east against Kronstadt, Romanian retreat continues.
Brusilov offensive, Galicia: Third Battle of the Narajowka and Zlota Lipa: Russian Seventh Army attacks Turkish XV Corps (3,015 casualties).
Southern Front
Macedonia: Allied attack on Sarrail‘s orders, only Serbs gain shallow Crna bridgehead at Brod for heavy losses (until October 7) but Germans move 3 battalions to sector from Vardar (until October 10) after the Bulgarian battalion opposite Serbs mutinies.
Lively actions with seven miles of Monastir.
Trentino: Alpini Battalion repulse counter-attacks on Busa Alta (October 10).
Naval and Overseas Operations
German High Seas Fleet U-boats ordered to resume merchant shipping targeting, but no torpedoeing without warning (until January 31, 1917); also to send 4 more U-boats to Mediterranean.
East Africa: Deventer’s patrols reach Malongwe and Lake Force troops, whole Central Railway in Allied hands. First trolley vehicle reaches Dodoma.