123Movies. At the beginning of Sumadijska street in the vicinity of Slavija Square on the 11th August 1913, the Serbian victorious army from the Second Balkan War led by the Crown Prince Alexander Karadjordjevic was given a huge welcome by the highest military and political authorities of Serbia and Belgrade, representatives of civil organizations and national institutions, as well as several tens of thousands of people from Belgrade, Serbia and Vojvodina.