Ferdinand fulfils in Hungarian demonology the role of both saviour and scavenger on national disaster. Events moved with hideous speed after Mohács, with this fundamental breach opening up a seemingly unstoppable western and north-western campaign area for the Ottomans. In 1527, Suleiman’s army besieged Vienna, retreated and then returned again in 1529 to finish the task. It was this campaign which initiated the first of the great, self-immolating acts of sacrifice which were all that Hungarians could take away from their general disaster – the siege of Kőszeg.