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
Marijan Varešanin big encouragement to Gavrilo Princip. Princip visited Žerajić's grave where he promised to take a revenge, which he did by killing Archduke Franz Ferdinand in Sarajevo on 28 June 1914. Even though the assassination attempt was a failure, Varešanin started to think about his retirement. On 10 May 1911 his request for dismissal as governor was accepted and he was replaced by Oskar Potiorek. On 10 July 1911 he officially entered into a retirement after 45 years of service. Marijan Varešanin Marijan Varešanin von Varesch (1 February 1847 – 22 April 1917) was Governor of Bosnia and Herzegovina from 1909