Брусиловский прорыв
By August 1916 the Central Powers found themselves in an increasingly difficult military situation – in the West the German offensive at Verdun had turned into a costly battle of attrition, in the East the Brusilov Offensive was crippling the Austro-Hungarian Army, and in the South the Italian Army was increasing the pressure on the Austro-Hungarians, while General Maurice Sarrail's Allied expeditionary force in northern Greece seemed poised for a major offensive against the Bulgarian Army.