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
Historical characters in the Southern Victory Series bomb on June 28, 1914. In real history, the Archduke and his wife were assassinated on the same date, but by gunshot after failed attempts to throw bombs into their car. After the assassination, Austria-Hungary issued a number of ultimata against Serbia, which was supported by Russia. Austria-Hungary was in turn supported by Germany and the United States. Russia invoked its alliances with the United Kingdom, France, and the Confederate States, and the Great War began. Franz Ferdinand's death inspired Arthur McGregor's last failed attempt to assassinate General George Armstrong Custer in 1922. Duchess Sophie and her husband Archduke Franz