When the Council of Constance was dissolved, Sigismund hastened to Hungary to carry on a new war with the Turks, who were already extending their conquests along the Danube. The Hussites in Bohemia employed this opportunity to organize themselves for resistance; 40,000 of them, in July, 1419, assembled on a mountain to which they gave the name of "Tabor," and chose as their leader a nobleman who was surnamed _Ziska_, "the one-eyed." The excitement soon rose to such a pitch that several monasteries were stormed and plundered. King Wenzel arrested some of the ringleaders, but this only inflamed the spirit of the people. They formed a procession in Prague, marched through the city, carrying the sacramental cup at their head, and took forcible possession of several churches. When they halted before the city-hall, to demand the release of their imprisoned brethren, stones were thrown at them from the windows, whereupon they broke into the building and hurled the Burgomaster and six other officials upon the upheld spears of those below. The news of this event so excited Wenzel that he was stricken with apoplexy, and died two weeks afterwards. The Hussites were already divided into two parties, one moderate in its demands, called the "Calixtines," from the Latin _calix_, a chalice, which was their symbol, the other radical and fanatic, called the "Taborites," who proclaimed their separation from the Church of Rome and a new system of brotherly equality through which they expected to establish the Millennium upon earth. The exigencies of their situation obliged these two parties to unite in common defence against the forces of the Church and the Empire, during the sixteen years of war which followed; but they always remained separated in their religious views, and mutually intolerant. Ziska, who called himself "John Ziska of the Chalice, commander in the hope of God of the Taborites," had been a friend and was an ardent follower of Huss. He was an old man, bald-headed, short, broad-shouldered, with a deep furrow across his brow, an enormous aquiline nose, and a short red moustache. In his genius for military operations, he ranks among the great commanders of the world: his quickness, energy and inventive talent were marvellous, but at the same time he knew neither tolerance nor mercy. [Sidenote: 1420.]