Johann Tserclaes, Count of Tilly, Bavarian general (born 1559)

Johann Tserclaes, Count of Tilly was a field marshal who commanded the Catholic League's forces in the Thirty Years' War. From 1620 to 1631, he won an unmatched and demoralizing string of important victories against the Protestants, including White Mountain, Wimpfen, Höchst, Stadtlohn and the Conquest of the Palatinate. He destroyed a Danish army at Lutter and sacked the Protestant city of Magdeburg, which caused the deaths of some 20,000 of the city's inhabitants, both defenders and non-combatants, out of a total population of 25,000.