upon which Wallenstein drew his sword and ran him through,"A fresh major was immediately appointed and displayed greater tractability". Deserting the Bohemians, he marched his regiment to Vienna taking with him the Moravian treasury. There, however, the authorities told him that the money would go back to the Moravians – but he had shown his loyalty to Ferdinand, the future Emperor. Wallenstein equipped a regiment of cuirassiers and won great distinction under Charles Bonaventure de Longueval, Count of Bucquoy in the wars against Ernst von Mansfeld and Gabriel Bethlen (both supporters of the Bohemian revolt) in Moravia. Wallenstein recovered his lands (which the rebels had seized in 1619) and after the Battle of White Mountain (8 November 1620), he secured the estates belonging to his mother's family and confiscated tracts of Protestant lands. He grouped his new possessions into a territory called Friedland (Frýdlant) in northern Bohemia. A series of successes in battle led to Wallenstein becoming in 1622 an imperial count palatine, in 1623 a prince, and in 1625 Duke of Friedland. Wallenstein proved an able administrator of the duchy and sent a large representation to Prague to emphasize his nobility. In order to aid Ferdinand (elected Holy Roman Emperor in 1619) against the Northern Protestants and to produce a balance in the army of the Catholic League under Johann Tserclaes, Count of Tilly, Wallenstein offered to raise a whole army for the imperial service following the bellum se ipsum alet principle, and received his final commission on 25 July 1625. Wallenstein's successes as a military commander brought him fiscal credit, which in turn enabled him to receive loans to buy lands, many of them being the former estates of conquered Bohemian nobles. He used his credit to grant loans to Ferdinand II, which were repaid through lands and titles. Wallenstein's popularity soon recruited 30,000 (not long afterwards 50,000) men. The two armies worked together over 1625–27, at first against Mansfeld. Having beaten Mansfeld at Dessau (25 April 1626), Wallenstein cleared Silesia of the remnants of Mansfeld's army in 1627. His army ravaged and burned down many Silesian towns and villages, including Prudnik, Głogówek, Żory, Pszczyna, Bytom, Rybnik, Koźle, and Strzelce Opolskie. At this time he bought from the emperor the Duchy of Sagan (in Silesia). He then joined Tilly in the struggle against Christian IV of Denmark, and afterwards gained as a reward the Duchies of Mecklenburg, whose