Assassin Gavrilo Princip (left) and his victim Archduke Franz Ferdinand, both photographed in 1914. Princip, a 19 year old a Bosnian Serb who killed the Archduke, was recruited along with five others by Danilo Ilic, a friend and fellow Bosnian Serb, who was a member of the Black Hand secret society. Their ultimate goal was the creation of a Serbian nation. The conspiracy, assisted by members of Serbia's military, was quickly uncovered, and the attack became a catalyst that would soon set massive armies marching against each other around the world. All of the assassins were captured and tried. Thirteen received medium-to-short prison sentences, including Princip (who was too young for the death penalty, and received the maximum, a 20 year sentence). Three of the conspirators were executed by hanging. Four years after the assassination, Gavrilo Princip died in prison, brought down by tuberculosis, which was worsened by harsh conditions brought on by the war he helped set in motion.