 The ultimate goal of the offensive was to encircle and destroy the remnants of the Serbian army.The defeat of Serbia and forced exile of its army and government marked the end of the Serbian Campaign on November 24, 1915.On 6 October 1915, less than a year after Serbia marked the first Allied victory of World War One and humiliated its powerful neighbour, the Austro-Hungarian Third Army, the German Eleventh Army, as well as General Sarkotić’s army from Bosnia, began the fourth invasion of Serbia.