1915, Austria-Hungary, Baltic, Bulgaria, Champagne, Danube, France, Germany, Great Britain, Hajvoronka, Imperial German Navy, La Folie, La Goutte, Nikolay Ivanov, Nish, Royal Navy, Second Battle of Champagne, Semendria, Serbia, Souchez, Strypa, submarine, Third Battle of Artois
Bulgarians cross the Serbian frontier east and south-east of Nish. Semendria, on the Danube, captured by the Austro-German forces. General Ivanoff breaks the Austro-German line at Hajvoronka on the Strypa; French progress north-east of Souchez and on the heights of La Folie; French dominate La Goutte ravine in Champagne. German steamers torpedoed by British submarines in the Baltic.