/Anabaptists/.[6]--The belief that baptism could not be conferred validly on infants who have not arrived at the use of reason was held by many of the Middle Age sectaries, and was revived at the time of the Reformation. Its supporters, claiming for themselves the liberty of interpreting the Scriptures according to their own judgment, maintained that they had divine sanction for their teaching. The leaders of the sect in Saxony and Thuringia were Thomas Munzer and Nicholas Storch. They represented the extreme left of the Lutheran party maintaining the equality of men and the community of property. In Zwickau, where the movement originated, violent disturbances broke out, and the leaders retired to Wittenberg where they were joined by Carlstadt. It required the presence of Luther himself to prevent the city from falling completely into their hands. Owing to the dangerous character of the radical principles defended by the Anabaptists several princes of Germany joined hands for their suppression. They were defeated at the battle of Frankenberg (1525) and Munzer was arrested and put to death. Before his execution he returned to the Catholic Church. Despite this defeat the party made considerable progress in West Germany and in the Netherlands, where the people were so disgusted with their political and social conditions that they were ready to listen to semi-religious, semi-social reformers like the Anabaptists. They took possession of the city of Munster in Westphalia. The two principal leaders were John of Leyden (a tailor) and John Matthyas or Matthieson (a baker), the former of whom was appointed king. The city was besieged and captured in 1535, and the principal Anabaptists were put to death. In Switzerland the movement made considerable progress. From Switzerland it spread into southern Germany, but the triumph of the princes during the Peasants' War destroyed the hopes of the extreme Anabaptists, and forced the sect to discard most of its fanatical tendencies. The leader of the more modern Anabaptist sect was Menno Simonis, a priest who joined the Society in 1535, and after whom the Anabaptists are called frequently Mennonites.[7] The latter rejected infant baptism and Luther's doctrine of Justification by faith alone. They protested against oaths even in courts of law and capital punishment.