Michael Sattler (1490-1527) was a monk who left his Black Forest monastery as a peasant army swept through the region. He was an early leader of the Anabaptist movement, believing that baptism should be reserved for adults who consciously wished to confess their faith and be baptised. He was also a pacifist and advocated non-resistance against the Ottoman Turks, who posed a serious threat to the Holy Roman Empire. He believed it would be better to pray to God to repel the Turks than take up arms against them and contravene the commandment “Thou shalt not kill.” He was arrested and executed, thus becoming an early martyr of the Reformation.