Greater Serbia the Kingdom of Serbia retreated from Durrës in April 1913 under pressure of the naval fleet of Great Powers, but it remained in other parts of Albania for the next two months. The secret military society called Unity or Death, popularly known as the Black Hand, headed by Serbian colonel Dragutin Dimitrijević Apis, which took an active and militant stance on the issue of a Greater Serbian state. This organization is believed to have been responsible for numerous atrocities following the Balkan Wars in 1913. In 1914, Young Bosnia member Gavrilo Princip assassinated Archduke Franz Ferdinand in Sarajevo, which set
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