In the meanwhile Sforza had crossed the Alps and passed the Lake of Como, amid acclamations of joy from his former subjects, who had quickly lost the enthusiasm that the French army and Louis’s promises had inspired. These demonstrations were so noisy at Milan, that Trivulce, judging that there was no safety for a French garrison in remaining there, made his way to Navarra. Experience proved that he was not deceived; for scarcely had the Milanese observed his preparations for departure when a suppressed excitement began to spread through the town, and soon the streets were filled with armed men. This murmuring crowd had to be passed through, sword in hand and lance in rest; and scarcely had the French got outside the gates when the mob rushed out after the army into the country, pursuing them with shouts and hooting as far as the banks of the Tesino. Trivulce left 400 lances at Navarra as well as the 3000 Swiss that Yves d’Alegre had brought from the Romagna, and directed his course with the rest of the army towards Mortara, where he stopped at last to await the help he had demanded from the King of France. Behind him Cardinal Ascanio and Ludovico entered Milan amid the acclamations of the whole town. Neither of them lost any time, and wishing to profit by this enthusiasm, Ascanio undertook to besiege the castle of Milan while Ludovico should cross the Tesino and attack Navarra. There besiegers and besieged were sons of the same nation; for Yves d’Alegre had scarcely as many as 300 French with him, and Ludovico 500 Italians. In fact, for the last sixteen years the Swiss had been practically the only infantry in Europe, and all the Powers came, purse in hand, to draw from the mighty reservoir of their mountains. The consequence was that these rude children of William Tell, put up to auction by the nations, and carried away from the humble, hardy life of a mountain people into cities of wealth and pleasure, had lost, not their ancient courage, but that rigidity of principle for which they had been distinguished before their intercourse with other nations. From being models of honour and good faith they had become a kind of marketable ware, always ready for sale to the highest bidder. The French were the first to experience this venality, which later-on proved so fatal to Ludovico Sforza.