Serbian Campaign of World War I Serbia, Montenegro, and Greece. When Bulgaria attacked both Serbia and Greece on 16 June 1913, it lost most of its Macedonian region to those countries, and additionally the Southern Dobruja region to Romania and Adrianople (the present-day city of Edirne) to Turkey in the 33-day Second Balkan War, which further destabilized the region. On 28 June 1914, Gavrilo Princip, a Bosnian Serb student and member of a multi-ethnic organisation of national revolutionaries called Young Bosnia, assassinated Archduke Franz Ferdinand of Austria, the heir to the Austro-Hungarian throne, in Sarajevo, Bosnia. The political objective of the assassination was the independence of
Archduke Ferdinand Karl Joseph of Austria-Este civil governor of Galicia, taking up residence in Lviv. After the Revolution of 1848 he resided mostly in Italy. Ferdinand never married. In 1850 he died at Schloss Ebenzweier in Altmünster near Gmunden, Austria. Archduke Ferdinand Karl Joseph of Austria-Este Archduke Ferdinand Karl Joseph of Austria-Este (25 April 1781 – 5 November 1850) was the third son of Archduke Ferdinand of Austria-Este and of his wife Princess Maria Beatrice Ricciarda d'Este, last member and heiress of the House of Este. For much of the Napoleonic Wars he was in command of the Austrian army. Ferdinand was born at Milan. He