The term 'Yugoslavian Capital' refers to the city of Belgrade, which is the capital of Serbia and the former Yugoslavia. Belgrade is an ancient city with a long and complex history, having been occupied by various empires and nations over the centuries. It is located at the confluence of the Sava and Danube rivers and is the largest city in Serbia. Belgrade has a population of around 1.7 million people and is an important cultural, economic, and political center in the region.