The Battle of Kolubara, was fought between Austria-Hungary and Serbia in November and December 1914, during which campaign of World War I was fought from late July 1914, when Austria-Hungary invaded the Kingdom of Serbia at the outset of World War I, until the war's conclusion in November 1918?
Serbian Campaign of World War I The Serbian Campaign of World War I was fought from late July 1914, when Austria-Hungary invaded the Kingdom of Serbia at the outset of World War I, until the war's conclusion in November 1918. The front ranged from the Danube River to southern Macedonia and back north again, and it drew in forces from almost all the combatants of the war.
Ottoman–Hungarian wars The Ottoman–Hungarian Wars were a series of battles between the Ottoman Empire and the medieval Kingdom of Hungary. Following the Byzantine Civil War, the Ottoman capture of Gallipoli and the decisive Battle of Kosovo, the Ottoman Empire seemed poised to conquer the whole of the Balkans. However, the Ottoman invasion of Serbia drove Hungary to war against the Ottomans, competing for the vassalship of the states of Serbia, Wallachia and Moldavia.