With Fire and Sword by Henryk Sienkiewicz — Read

Volodyovski and Zagloba found all the forces of the Crown assembled at Zbaraj, and waiting for the enemy. The cupbearer of the Crown, Ostrorog, who had come from Konstantinoff, was there, and Lantskoronski, castellan of Kamenyets, who had gained the first victory at Bar; the third commander, Pan Firlei of Dombrovitsa, castellan of Belsk, and Andrei Serakovski, secretary of the Crown; Konyetspolski, the standard-bearer, and Pshiyemski, commander of the artillery, a warrior specially expert in the capture and defence of towns; and with them ten thousand troops, not counting a number of Prince Yeremi's squadrons previously quartered at Zbaraj.

Pan Pshiyemski, on the southern side of the town and the castle and the two ponds, had laid out a strong camp, which he fortified in foreign fashion, and which it was only possible to capture in front; for at the rear and two sides it was defended by the ponds, the castle, and the river. In this camp the commanders intended to offer resistance to Hmelnitski, and delay his avalanche till the king, with the rest of the forces and the national militia of all the nobility, should come. But was that plan possible of execution in view of the power of Hmelnitski? There was much doubt, and there were reasonable causes for the doubt -- among them the disorder in the camp itself. First of all, secret contention was raging among the leaders. The commanders had come against their will to Zbaraj, yielding in this to the desires of Prince Yeremi. They wished at first to make their defence at Konstantinoff; but when the news went forth that Yeremi would appear in his own person only in case Zbaraj should be the point of defence, the soldiers declared immediately to the leaders of the Crown that they would go to Zbaraj, and would not fight elsewhere. Neither persuasion nor the authority of the baton availed; and in short the commanders discovered that if they should continue in longer resistance, the army, from the heavy hussar regiments to the last soldier of the foreign companies, would leave them and go over to the banners of Vishnyevetski. This was one of those sad cases of military insubordination of increasing frequency in that time, and caused by the incapacity of the leaders, their mutual disagreements, the unexampled terror before the power of Hmelnitski, and the defeats unheard of till then, especially the defeat of Pilavtsi.