On 28 May 1876, the passengers of the Radetzky, a steamer headed on the Danube to Vienna, were in for a surprise. As the ship was heading upstream, three men in strange military uniforms, swords and guns in their hands, appeared on the deck. Their leader, a handsome bearded man, cried something and suddenly young men, that until then had looked like ordinary gardeners heading for seasonal work in Austria-Hungary, gathered around the band. Dozens of them. They took off their clothes and put on uniforms. More weapons were seen onboard.