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
Archduke Franz Ferdinand of Austria Franz Ferdinand's death, with Austria-Hungary's declaration of war against Serbia. The assassination of Ferdinand is considered the most immediate cause of World War I. Franz Ferdinand is interred with his wife Sophie in Artstetten Castle, Austria. Archduke Franz Ferdinand and his Castle of Artstetten were selected as a main motif for the Austrian 10 euro The Castle of Artstetten commemorative coin, minted on 13 October 2004. The reverse shows the entrance to the crypt of the Hohenberg family. There are two portraits below, showing Archduke Franz Ferdinand and his wife Sophie, Duchess of Hohenberg. The Scottish band Franz Ferdinand named