Black Hand (Serbia) Balkan Wars. By this point, disagreeing with the Black Hand was dangerous, as political murder was one of their tools. It was also in 1914 that Apis allegedly decided that Archduke Franz Ferdinand, the heir-apparent of Austria, should be assassinated, as he was trying to pacify the Serbians, and if this happened then a revolution would never occur. Towards that end it is claimed that three young Bosnian Serbs were recruited to kill the Archduke. They were definitely trained in bomb throwing and marksmanship by current and former members of the Serbian military. Gavrilo Princip, Nedeljko Čabrinović and Trifko Grabež
Slobodan Princip number of schools in Bosnia and Belgrade have been named after him as well. Slobodan Princip Slobodan Princip (; 25 May 1914–May 1942), nicknamed Seljo (Сељо), was a Yugoslav Partisan fighter and the district staff chief of Partisan Sarajevo Oblast during World War II. He was posthumously awarded the Hero of Yugoslavia. He was the nephew of Gavrilo Princip. Princip was born in Hadžići, near Sarajevo, Austria-Hungary (now Bosnia and Herzegovina), into an ethnic Serb family. His father Jovan ("Jovo") was the brother of Gavrilo Princip, the assassin of Archduke Franz Ferdinand of Austria. He joined the Communist Youth (SKOJ)