two armies became engaged, whilst the centre battalions remained out of action, for these two portions of the line of battle were separated from each other by a long interval and thus unable to reach each other. By this expedient the more valiant of Castruccio's men were opposed to the weaker part of his enemy's troops, and the most efficient men of the enemy were disengaged; and thus the Florentines were unable to fight with those who were arrayed opposite to them, or to give any assistance to their own flanks. So, without much difficulty, Castruccio put the enemy to flight on both flanks, and the centre battalions took to flight when they found themselves exposed to attack, without having a chance of displaying their valour. The defeat was complete, and the loss in men very heavy, there being more than 10,000 men killed with many officers and knights of the Guelph party in Tuscany, and also many princes who had come to help them, among whom were Piero, the brother of King Ruberto, and Carlo, his nephew, and Filippo, the lord of Taranto. On the part of Castruccio the loss did not amount to more than 300 men, among whom was Francesco, the son of Uguccione, who, being young and rash, was killed in the first onset. This victory so greatly increased the reputation of Castruccio that Uguccione conceived some jealousy and suspicion of him, and bent all
