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
To my peoples was made plural. After the assassination of Archduke Franz Ferdinand of Austria, heir to the Austro-Hungarian throne, and his wife Sophie in Sarajevo on June 28, 1914, diplomatic relations between Austria-Hungary and Serbia became strained. After weeks of discussions, government and army leaders of the Empire decided to risk war with Serbia, hoping for a short and victorious campaign. Emperor Franz Joseph signed the declaration of war in his Imperial Villa in Bad Ischl on July 28. The document was distributed all over the empire and was widely published on the morning of the next day. At this time, several