It is incredible, considering the nature of the ground and the number of the troops engaged, that the allies should not have returned to the attack and have made the passage of the French into the plain impossible. De Comines, however, assures us that the actual engagement only lasted a quarter of an hour, and the pursuit of the Italians three quarters of an hour. After they had once resolved to fly, they threw away their lances and betook themselves to Reggio and Parma. So complete was their discomfiture, that De Comines gravely blames the want of military genius and adventure in the French host. If, instead of advancing along the left bank of the Taro and there taking up his quarters for the night, Charles had recrossed the stream and pursued the army of the allies, he would have had the whole of Lombardy at his discretion. As it was, the French army encamped not far from the scene of the action in great discomfort and anxiety. De Comines had to bivouac in a vineyard, without even a mantle to wrap round him, having lent his cloak to the King in the morning; and as it had been pouring all day, the ground could not have afforded very luxurious quarters. The same extraordinary luck which had attended the French in their whole expedition, now favoured their retreat; and the same pusillanimity which the allies had shown at Fornovo, prevented them from re-forming and engaging with the army of Charles upon the plain. One hour before daybreak on Tuesday morning, the French broke up their camp and succeeded in clearing the valley. That night they lodged at Fiorenzuola, the next at Piacenza, and so on; till on the eighth day they arrived at Asti without having been so much as incommoded by the army of the allies in their rear.
Although the field of Fornovo was in reality so disgraceful to the Italians, they reckoned it a victory upon the technical pretence that the camp and baggage of the French had been seized. Illuminations and rejoicings made the piazza of S. Mark in Venice gay, and Francesco da Gonzaga had the glorious Madonna della Vittoria painted for him by Mantegna, in commemoration of what ought only to have been remembered with shame.