Why did John Amos Comenius and other Protestant leaders flee Bohemia during the Thirty Years’ War?

John Amos Comenius and other Protestant leaders were forced to flee Bohemia during the Thirty Years’ War primarily due to the aggressive Counter-Reformation policies enforced by the Holy Roman Emperor Ferdinand II.12

Following the defeat of Protestant forces at the Battle of the White Mountain in 1620, Ferdinand II sought to re-Catholicize the region by force. His administration took severe measures against those who had participated in the Protestant rebellion, including the execution of leaders, the confiscation of property from noblemen, and the systematic suppression of non-Catholic faiths.132

Because the emperor was determined to establish religious unity throughout the empire, Protestants—including members of the Bohemian Brethren, to which Comenius belonged—faced intense persecution. Many were forced to choose between recanting their beliefs or leaving the country, leading to a mass emigration of Protestants to neighboring regions.1324