At an Imperial conference held in August, Catholic hardliners succeeded in blocking concessions on the Edict; the combination meant Saxony allied with Gustavus and their combined army won an overwhelming victory over the League at Breitenfeld in September. This dramatically changed the balance of power and by early 1632, Swedish forces occupied much of Southwest Germany and Bavaria, including Munich. Gustavus' death at Lützen in September 1632 allowed Maximilian to regain his lost territories.