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 Franz Ferdinand of Austria employed a staff of sixteen. His authority was reinforced in 1907 when he secured the retirement of the Emperor's confidant Friedrich von Beck-Rzikowsky as Chief of the General Staff. Beck's successor, Franz Conrad von Hötzendorf, was personally selected by Franz Ferdinard. Franz in 1913, as heir-presumptive to the elderly emperor, had been appointed inspector general of all the armed forces of Austria-Hungary ("Generalinspektor der gesamten bewaffneten Macht"), a position superior to that previously held by Archduke Albrecht and including presumed command in wartime. In 1894 Franz Ferdinand met Countess Sophie Chotek, a lady-in-waiting to Archduchess Isabella, wife of Archduke Friedrich,