The Hussites nearly succeeded in creating the Protestant Reformation 100 year before Martin Luther. They failed mainly because their protector, King Wenceslaus of Bohemia, died and his brother Sigusmund took up the Catholic cause and waged a crusade against them. Even then, the Hussites forced the Catholic Church to concede on what was at the time a major point, allowing the laity the chalice, at least for a while.
The Divine Principle calls the period during which the Hussites lived, the Babylonian captivity of the papacy. The Principle states that Jan Hus "was personally invited to attend the Council of Constance only to be burned at the stake," and "at that point, the die was cast for the outbreak of the Protestant Reformation" (EP II.4.5). People can, therefore, consider that Hussites in fact represented the first stage of what eventually became the Reformation itself. Even though their cause did not succeed, it may be viewed as one of the first waves of the providential movement to restore the Christian church in preparation for the second advent by removing mediators between individuals and God and providing a liturgy in the common language of the people.
The Moravian Church still stands as a testimony to their heroic tradition.