Heresy
Beginning of the Hussite Wars
King Wenceslaus lived long enough to confirm the new Hussite councillors in their office, but died a week or so later. With his death, Sigismund supposedly became King of Bohemia, but the Czechs refuted him. He was widely regarded as being an enemy of the Czechs. He supposedly had tried to undermine his brother. And above all, he was the betrayer of Hus. Another point on which the Taborites differed from the Utraquists is that they categorically refused to recognize Sigismund, whereas the Utraquists were at least willing to negotiate if the Emperor was willing to grant them certain practices and protections.
It was now open war. In November 1420, the Vysehrad fortress fell to the Hussites, giving them military control of Prague. The following March, Sigismund left Bohemia. The Hussites scored a publicity coup in April 1421 when the Archbishop of Prague stated his adherence to the Four Articles, and that June a Bohemian diet likewise declared.
But the weakness of the Hussite movement also can be seen in this year. Down at Tabor, the Hussites themselves burned Martin Huska, for being too radical even for them. Peter Kanis was destroyed in open battle, also for being too radical. We know only second-hand information about these radicals among the radicals, but Kanis' group was accused of nudism and sexual license, claiming to be free of sin and incapable of sin for they lived in a state of grace.
In December, Sigismund returned with another army, this one even larger. This time he was determined to fight.