<prompt> Nyora kupfuurira kweiyi ndima - Mushure mekukunda kweuto reSerbia muhondo yeKolubara  <response>: muna December 1914, hondo yeSerbia yakanyarara kusvikira mukuvamba kwematsutso a1915. Pasi pehutungamiri hwa Field Marshal August von Mackensen, Austro-Hungarian Balkan Army, German 11th Army uye rwizi flotillas paDanube neSava vakatanga kurwisa musi wa 6 Gumiguru 1915, kurwisa kukuru kurwisa Serbia. Pakazosvika Nyamavhuvhu 1915, zvisinei nekuzvipira kwakanyanya kwemauto eSerbia, mauto eAustria-Hungary eBalkan, mushure mekunge vayambuka nzizi dzeSava neDrina neGerman 11th Army mushure mekuyambuka Danube, vakatora Belgrade, Smederevo, Požarevac neGolubac, vachigadzira bhiriji rakakura kumaodzanyemba kwerwizi rweSava neDanube. Izvi, zvakasanganiswa nekubudirira kweBulgaria kurwisa kuMorava, Ovče Pole neKosovo zvakamanikidza mauto eSerbia kuti adzokere kuGreece isina kwayakarerekera. France neBritain dzakatamisa mauto kubva kuGallipoli Campaign kuenda kuGreek Macedonia. Hondo yeMacedonia nokudaro yakagadzwa mukuedza kutsigira zvakasara zveuto reSerbia kukunda Vardar Macedonia. 