The Battle of Niš was a military engagement between the army of the Kingdom of Bulgaria with support from the German Empire against the Kingdom of Serbia in November 1915, during the Central Powers Morava Offensive of World War I. City of Niš, serving as a capital of Serbia after the fall of Belgrade, was captured between 4 and 5 November 1915 by the forces of 9th Pleven Division of Bulgarian First Army. The fall of Niš had a huge psychological impact on both of fighting sides: Serbians were forced to continue in their Great Retreat, for Central Powers the victory ment removing the last obstacle for operating the Berlin–Baghdad railway, the shortest railway connection between Germany, Austria-Hungary and the Ottoman Empire.