Despite his victory in Wittenberg, Luther was unable to stifle radicalism further afield. Preachers such as Zwickau prophet Nicholas Storch and Thomas Müntzer helped instigate the German Peasants' War of 1524–25, during which many atrocities were committed, often in Luther's name. There had been revolts by the peasantry on a smaller scale since the 15th century. Luther's pamphlets against the Church and the hierarchy, often worded with "liberal" phraseology, now led many peasants to believe he would support an attack on the upper classes in general. Revolts broke out in Franconia, Swabia, and Thuringia in 1524, even drawing support from disaffected nobles, many of whom were in debt. Gaining momentum under the leadership of radicals such as Müntzer in Thuringia and Michael Gaismair in Tyrol, the revolts turned into war.