Young Bosnia and the Battle of Kosovo. Two notable organizations are referred to in connection with Young Bosnia: Narodna Odbrana and Black Hand. During a Serbian kangaroo court in French-occupied Salonika in 1916–17, Chief of Serbian Military Intelligence Dragutin Dimitrijević Apis testified that he had organized the assassination of Archduke Franz Ferdinand of Austria, in Sarajevo on 28 June 1914, (the assassin was Gavrilo Princip). In the process, he used not only his power over elements of the Serbian military, but also the Black Hand. Leaders of the Black Hand in turn had penetrated Narodna Odbrana and used that organization to infiltrate
Europe War I was fought between 1914 and 1918. It started when Archduke Franz Ferdinand of Austria was assassinated by the Yugoslav nationalist Gavrilo Princip. Most European nations were drawn into the war, which was fought between the Entente Powers (France, Belgium, Serbia, Portugal, Russia, the United Kingdom, and later Italy, Greece, Romania, and the United States) and the Central Powers (Austria-Hungary, Germany, Bulgaria, and the Ottoman Empire). The war left more than 16 million civilians and military dead. Over 60 million European soldiers were mobilised from 1914 to 1918. Russia was plunged into the Russian Revolution, which threw down the