Trifko Grabež society. For the next two years he spent most of his spare time with other nationalists who favoured a union between Bosnia and Herzegovina and Serbia. When it was announced that Archduke Franz Ferdinand, the heir to the throne of Austro-Hungarian Empire, was going to visit Bosnia and Herzegovina in June 1914, Colonel Dragutin Dimitrijević, the chief of the Intelligence Department in the Serbian Army and head of the Black Hand, sent seven men, Grabež, Nedeljko Čabrinović, Vaso Čubrilović, Cvjetko Popović, Danilo Ilić, Muhamed Mehmedbašić and Gavrilo Princip to Sarajevo to assassinate him. Each man was given either a revolver
Dobroslav Jevđević secondary school in Sarajevo. There, he joined the revolutionary organisation known as Young Bosnia and became a friend of Gavrilo Princip, the assassin who killed Archduke Franz Ferdinand of Austria on 28 June 1914. The day of the assassination, Jevđević's father was arrested by the Austro-Hungarian police for his connections with the Serb revolutionary organisation "Narodna Odbrana" (National Defence). He was charged with high treason, sentenced to death by hanging in April 1916 and executed in Banja Luka. Jevđević was a successful writer and poet in his youth. He studied law at the universities of Zagreb, Belgrade, and Vienna and