The assassination of Archduke Francis Ferdinand is widely believed to have started World War I. He and his wife were shot to death by a Serbian nationalist in Sarajevo, Bosnia on this day, the same day as their anniversary. Franz Ferdinand and Sophie, his wife, were touring Sarajevo in an open car with little security. Initially, Serbian nationalist Nedjelko Cabrinovic had thrown a bomb on the car, but it had rolled off the back and injured an officer. Later that day, the couple went to visit the officer, but took a wrong turn; this is where the assassin happened to catch them.