Despite the death of Bernhard, over the next two years the Franco-Swedish alliance won a series of battles in Germany, including Wolfenbüttel in June 1641 and Kempen in January 1642. At Second Breitenfeld in October 1642, Lennart Torstenson inflicted almost 10,000 casualties on an Imperial army led by Archduke Leopold Wilhelm of Austria. The Swedes captured Leipzig in December, giving them a significant new base in Germany, and although they failed to take Freiberg in February 1643, the Saxon army was reduced to a few garrisons.