Ulric von Rosenberg, like his guardian C̆enek, played a somewhat questionable and uncertain part in the coming struggle. But the times and circumstances of his changes of position lead one to attribute to him somewhat different motives of action from those which influenced his guardian. He seems to have begun his career as a decided Utraquist; but his subsequent oppressions of his Utraquist dependents show a bitterer change of feeling than can be laid to the charge of C̆enek; while his special opposition to Z̆iz̆ka seems to mark the real ground of his questionable policy. In mere doctrine he may have had some sympathy with the reforming movement; but he was soon alarmed by the democratic character of the Taborite party and of its leader; and the great power which had been so long wielded by the Rosenbergs, was thrown, in the main, into the defence of aristocratic privileges and feudal rights. For the moment, however, the nobles could put forward the excuse that they were supporting the claims of a Queen, who was not stained with the blood of Hus, nor committed to an anti-national policy; and, it was on her behalf that C̆enek now organised a standing army, and seized into his hands several important fortresses. Z̆iz̆ka, on his part, felt that no time was to be lost in saving the cause for which he desired to struggle. So, at the head of a band of his drilled peasants, he suddenly marched upon the fortress of the Vys̆ehrad, drove out the royalist garrison, and put his own men in their place. Then, on the 10th of November, the Taborites set out in various bands, from the three or four towns which were occupied by their party; and they marched to Prague, to hold a great meeting there. The main body met at the town of Zinkov, where they organised their forces before proceeding on their march. But three hundred men had started alone from Austi, apparently ill-armed and ill-prepared for attack. This detached body was met on its way by one of the royalist nobles; and on the first attack he put to flight the men of Austi with much slaughter. The fugitives escaped to Knin, at which point the main body of their friends had now arrived. Baron von Sternberg, the general of the royalists, marched thither to meet the advancing Taborites, and probably hoped to obtain an easy victory. But the sturdy peasants repelled his attack with such vigour that the royalists were forced to retreat; and on the 4th of November, 1419, the Taborites entered Prague without further opposition. The royalist party were at once called to arms; while, on the other side, Nicholaus of Hus and Z̆iz̆ka marched into the Small Division of Prague, and, after a fierce struggle, seized upon the great fortress, which still overlooks the town. The Queen fled from Prague under the protection of Ulric of Rosenberg. C̆enek in the meantime gathered new forces on her behalf, and persuaded several towns to declare for the royalist cause.