Veljko Čubrilović Veljko Čubrilović Veljko Čubrilović (Serbian Cyrillic: Вељко Чубриловић; 6 June 1886 – 3 February 1915) was a Bosnian Serb who was involved in the assassination of Archduke Franz Ferdinand of Austria. He was born in Gradiška, Bosnia and Herzegovina and became a schoolteacher in Priboj Majevički. In 1914, as a member of the Black Hand secret society, he agreed to help Gavrilo Princip, Nedeljko Čabrinović, and Trifko Grabež assassinate Archduke Franz Ferdinand. His brother, Vaso Čubrilović, was also involved in the plot. On Sunday, 28 June 1914, Franz Ferdinand and Sophie von Chotkova were assassinated by Gavrilo Princip. Princip and
Oskar Potiorek Oskar Potiorek Oskar Potiorek (20 November 1853 – 17 December 1933) was an officer of the Austro-Hungarian Army, who served as Governor of Bosnia and Herzegovina from 1911 to 1914. He was a passenger in the car carrying Archduke Franz Ferdinand of Austria and his wife Duchess Sophie of Hohenberg when they were assassinated in Sarajevo on 28 June 1914. In the following World War I, Potiorek commanded the Austro-Hungarian forces in the Serbian Campaign of 1914/15. Born in Bad Bleiberg, Carinthia the son of a mining official, Potiorek attended the Imperial and Royal military institute of technology and the