The army being thus reduced, without a leader, and disorder prevailing in every department, the duke of Calabria, who was with his forces near Sienna, resolved to attack them immediately. The Florentines, finding the enemy at hand, were seized with a sudden panic; neither their arms, nor their numbers, in which they were superior to their adversaries, nor their position, which was one of great strength, could give them confidence; but observing the dust occasioned by the enemy's approach, without waiting for a sight of them, they fled in all directions, leaving their ammunition, carriages, and artillery to be taken by the foe. Such cowardice and disorder prevailed in the armies of those times, that the turning of a horse's head or tail was sufficient to decide the fate of an expedition. This defeat loaded the king's troops with booty, and filled the Florentines with dismay; for the city, besides the war, was afflicted with pestilence, which prevailed so extensively, that all who possessed villas fled to them to escape death. This occasioned the defeat to be attended with greater horror; for those citizens whose possessions lay in the Val di Pesa and the Val d'Elsa, having retired to them, hastened to Florence with all speed as soon as they heard of the disaster, taking with them not only their children and their property, but even their laborers;so that it seemed as if the enemy were expected every moment in the city. Those who were appointed to the management of the war, perceiving the universal consternation, commanded the victorious forces in the Perugino to give up their enterprise in that direction, and march to oppose the enemy in the Val d'Elsa, who, after their victory, plundered the country without opposition; and although the Florentine army had so closely pressed the city of Perugia that it was expected to fall into their hands every instant, the people preferred defending their own possessions to endeavoring to seize those of others. The troops, thus withdrawn from the pursuit of their good fortune, were marched to San Casciano, a castle within eight miles of Florence; the leaders thinking they could take up no other position till the relics of the routed army were assembled. On the other hand, the enemy being under no further restraint at Perugia, and emboldened by the departure of the Florentines, plundered to a large amount in the districts of Arezzo and Cortona; while those who under Alfonso, duke of Calabria, had been victorious near Poggibonzi, took the town itself; sacked Vico and Certaldo, and after these conquests and pillagings encamped before the fortress of Colle, which was considered very strong; and as the garrison was brave and faithful to the Florentines, it was hoped they would hold the enemy at bay till the republic was able to collect its forces. The Florentines being at Santo Casciano, and the enemy continuing to use their utmost exertions against Colle, they determined to draw nearer, that the inhabitants might be more resolute in their defense, and the enemy assail them less boldly. With this design they removed their camp from Santo Casciano to Santo Geminiano, about five miles from Colle, and with light cavalry and other suitable forces were able every day to annoy the duke's camp. All this, however, was insufficient to relieve the people of Colle; for, having consumed their provisions, they were compelled to surrender on the thirteenth of November, to the great grief of the Florentines, and joy of the enemy, more especially of the Siennese, who, besides their habitual hatred of the Florentines, had a particular animosity against the people of Colle.
It was now the depth of winter, and the weather so unsuitable for war, that the pope and the king, either designing to hold out a hope of peace, or more quietly to enjoy the fruit of their victories, proposed a truce for three months to the Florentines, and allowed them ten days to consider the reply. The offer was eagerly accepted; but as wounds are well known to be more painful after the blood cools than when they were first received, this brief repose awakened the Florentines to a consciousness of the miseries they had endured; and the citizens openly laid the blame upon each other, pointing out the errors committed in the management of the war, the expenses uselessly incurred, and the taxes unjustly imposed. These matters were boldly discussed, not only in private circles, but in the public councils;and one individual even ventured to turn to Lorenzo de' Medici, and say, "The city is exhausted, and can endure no more war; it is therefore necessary to think of peace." Lorenzo was himself aware of the necessity, and assembled the friends in whose wisdom and fidelity he had the greatest confidence, when it was at once concluded, that as the Venetians were lukewarm and unfaithful, and the duke in the power of his guardians, and involved in domestic difficulties, it would be desirable by some new alliance to give a better turn to their affairs.
