The real name of this zealous servant of Christ was John de Trocznow, that of Zisca is a Bohemian word, signifying one-eyed, as he had lost an eye. He was a native of Bohemia, of a good family and left the court of Winceslaus, to enter into the service of the king of Poland against the Teutonic knights. Having obtained a badge of honour and a purse of ducats for his gallantry, at the close of the war he returned to the court of Winceslaus, to whom he boldly avowed the deep interest he took in the bloody affront offered to his majesty's subjects at Constance in the affair of Huss. Winceslaus lamented it was not in his power to revenge it; and from this moment Zisca is said to have formed the idea of asserting the religious liberties of his country. In the year 1418, the council was dissolved, having done more mischief than good, and in the summer of that year a general meeting was held of the friends of religious reformation, at the castle of Wilgrade, who, conducted by Zisca, repaired to the emperor with arms in their hands, and offered to defend him against his enemies. The king bid them use their arms properly, and this stroke of policy first insured to Zisca the confidence of his party.
Winceslaus was succeeded by Sigismond, his brother, who rendered himself odious to the Reformers; and removed all such as were obnoxious to his government. Zisca and his friends, upon this, immediately flew to arms, declared war against the emperor and the pope, and laid siege to Pilsen with 40,000 men. They soon became masters of the fortress, and in a short time all the south-west part of Bohemia submitted, which greatly increased the army of the reformers. The latter having taken the pass of Muldaw, after a severe conflict of five days and nights, the emperor became alarmed, and withdrew his troops from the confines of Turkey, to march them into Bohemia. At Berne in Moravia, he halted, and sent despatches to treat of peace, as a preliminary to which, Zisca gave up Pilsen and all the fortresses he had taken. Sigismond proceeding in a manner that clearly manifested he acted on the Roman doctrine, that no faith was to be kept with heretics, and treating some of the authors of the late disturbances with severity, the alarm-bell of revolt was sounded from one end of Bohemia to the other. Zisca took the castle of Prague by the power of money, and on the 19th of August, 1420, defeated the small army the emperor had hastily got together to oppose him. He next took Ausea by assault, and destroyed the town with a barbarity that disgraced the cause in which he fought.
Winter approaching, Zisca fortified his camp on a strong hill about forty miles from Prague, which he called Mount Tabor, from whence he surprised a body of horse at midnight, and made a thousand men prisoners. Shortly after, the emperor obtained possession of the strong fortress of Prague, by the same means that Zisca had before done: it was soon blockaded by the latter, and want began to threaten the emperor, who saw the necessity of a retreat.
Determined to make a desperate effort, Sigismond attacked the fortified camp of Zisca on Mount Tabor, and carried it with great slaughter. Many other fortresses also fell, and Zisca withdrew to a craggy hill, which he strongly fortified, and whence he so annoyed the emperor in his approaches against the town of Prague, that he found he must either abandon the siege or defeat his enemy. The marquis of Misnia was deputed to effect this with a large body of troops, but the event was fatal to the imperialists; they were defeated, and the emperor having lost nearly one third of his army, retreated from the siege of Prague, harassed in his rear by the enemy.
In the spring of 1421, Zisca commenced the campaign, as before, by destroying all the monasteries in his way. He laid siege to the castle of Wisgrade, and the emperor coming to relieve it, fell into a snare, was defeated with dreadful slaughter, and this important fortress was taken. Our general had now leisure to attend to the work of reformation, but he was much disgusted with the gross ignorance and superstition of the Bohemian clergy, who rendered themselves contemptible in the eyes of the whole army. When he saw any symptoms of uneasiness in his camp, he would spread alarm in order to divert them, and draw his men into action. In one of these expeditions, he encamped before the town of Rubi, and while pointing out the place for an assault, an arrow shot from the wall struck him in the eye. At Prague it was extracted, but, being barbed, it tore the eye out with it. A fever succeeded, and his life was with difficulty preserved. He was now totally blind, but still desirous of attending the army. The emperor having summoned the states of the empire to assist him, it was resolved, with their assistance, to attack Zisca in the winter, when many of his troops departed till the return of spring.
The confederate princes undertook the siege of Soisin, but at the approach merely of the Bohemian general, they retreated. Sigismond nevertheless advanced with his formidable army, consisting of 15,000 Hungarian horse and 25,000 infantry, well equipped for a winter campaign. This army spread terror through all the east of Bohemia. Wherever Sigismond marched, the magistrates laid their keys at his feet, and were treated with severity or favour, according to their merits in his cause. Zisca, however, with speedy marches, approached, and the emperor resolved to try his fortune once more with that invincible chief. On the 13th of January, 1422, the two armies met on a spacious plain near Kamnitz. Zisca appeared in the centre of his front line, guarded, or rather conducted, by a horseman on each side, armed with a pole-axe. His troops having sung a hymn with a determined coolness drew their swords, and waited for a signal. When his officers had informed him that the ranks were all well closed, he waved his sabre round his head, which was the sign of battle.
This battle is described as a most awful sight. The extent of the plain was one continued scene of disorder. The imperial army fled towards the confines of Moravia, the Taborites, without intermission, galling their rear. The river Igla, then frozen, opposed their flight. The enemy pressing furiously, many of the infantry, and in a manner the whole body of the cavalry attempted the river. The ice gave way and not fewer than 2000 were swalled up in the water. Zisca now returned to Tabor, laden with all the spoils and trophies which the most complete victory could give.
Zisca now began again to pay attention to the reformation; he forbid all the prayers for the dead, images, sacerdotal vestments, fasts, and festivals. Priests were to be preferred according to their merits, and no one to be persecuted for religious opinions. In every thing Zisca consulted the liberal minded, and did nothing without general concurrence. An alarming disagreement now arose at Prague between the magistrates who were Calixtans, or receivers of the sacraments in both kinds, and the Taborites, nine of the chiefs of whom were privately arraigned, and put to death. The populace, enraged, sacrificed the magistrates, and the affair terminated without any particular consequence. The Calixtans having sunk into contempt, Zisca was solicited to assume the crown of Bohemia; but this he nobly refused, and prepared for the next campaign, in which Sigismond resolved to make his last effort. While the marquis of Misnia penetrated into Upper Saxony, the emperor proposed to enter Moravia, on the side of Hungary. Before the marquis had taken the field, Zisca sat down before the strong town of Ausig, situate on the Elbe. The marquis flew to its relief with a superior army, and, after an obstinate engagement, was totally defeated and Ausig capitulated. Zisca then went to the assistance of Procop, a young general whom he had appointed to keep Sigismond in check, and whom he compelled to abandon the siege of Pernitz, after laying eight weeks before it.
Zisca, willing to give his troops some respite from fatigue, now entered Prague, hoping his presence would quell any uneasiness that might remain after the late disturbance: but he was suddenly attacked by the people; and he and his troop having beaten off the citizens effected a retreat to his army, whom he acquainted with the treacherous conduct of the Calixtans. Every effort of address was necessary to appease their vengeful animosity, and at night, in a private interview between Roquesan, an ecclesiastic of great eminence in Prague, and Zisca, the latter became reconciled, and the intended hostilities were done away.
Mutually tired of the war, Sigismond sent to Zisca, requesting him to sheath his sword, and name his conditions. A place of congress being appointed, Zisca, with his chief officers, set out to meet the emperor. Compelled to pass through a part of the country where the plague raged, he was seized with it at the castle of Briscaw and departed this life, October 6, 1424. Like Moses, he died in view of the completion of his labours, and was buried in the great church of Czaslow, in Bohemia, where a monument is erected to his memory, with this inscription on it—"Here lies John Zisca, who, having defended his country against the encroachments of papal tyranny, rests in this hallowed place in despite of the pope."