 That same year ammunition and rifles were procured for a 10,000-strong "Legion of Ukrainian Sich Sharpshooters", which participated in Lviv parade on 28 June 1914, along with all of the youth organizations - "Sich", "Sokil" and "Plast".That same day, Archduke Franz Ferdinand was assassinated in Sarajevo by a Serbian nationalist, precipitating the chain of events that led to World War I.One month later, World War I broke out and the newly established General Ukrainian Council published in a Lviv newspaper "Dilo" the call for Galician Ukrainians to form volunteer units to fight the Russian Empire.