In 1566, the death of a sultan halted a massive Ottoman march toward Vienna

Suleiman the Magnificent was on the verge of a campaign to capture Vienna when his forces became bogged down at the Siege of Szigetvár in Hungary. Although the Ottomans eventually seized the fortress, the victory was hollow. Suleiman died in his tent from natural causes just before the final assault, a fact his grand vizier kept secret for weeks to prevent the army from mutinying.