Thanks to the 200,000 ducats that yet remained in his treasury, Ludovico Sforza had levied 500 men-at-arms from Burgundy and 8000 Swiss infantry, with whom he had entered Lombardy.

So Trivulce, to face this enemy, had been compelled to call back Yves d'Alegre and the troops that Louis XII had lent to Caesar; consequently Caesar, leaving behind a body of pontifical soldiery as garrison at Forli and Imola, betook himself with the rest of his force to Rome.
It was Alexander's wish that his entry should be a triumph; so when he learned that the quartermasters of the army were only a few leagues from the town, he sent out runners to invite the royal ambassadors, the cardinals, the prelates, the Roman barons, and municipal dignitaries to make procession with all their suite to meet the Duke of Valentinois; and as it always happens that the pride of those who command is surpassed by the baseness of those who obey, the orders were not only fulfilled to the letter, but beyond it.
The entry of Caesar took place on the 26th of February, 1500.

Although this was the great Jubilee year, the festivals of the carnival began none the less for that, and were conducted in a manner even more extravagant and licentious than usual; and the conqueror after the first day prepared a new display of ostentation, which he concealed under the veil of a masquerade.

As he was pleased to identify himself with the glory, genius, and fortune of the great man whose name he bore, he resolved on a representation of the triumph of Julius Caesar, to be given on the Piazzi di Navona, the ordinary place for holding the carnival fetes.

The next day, therefore, he and his retinue started from that square, and traversed all the streets of Rome, wearing classical costumes and riding in antique cars, on one of which Caesar stood, clad in the robe of an emperor of old, his brow crowned with a golden laurel wreath, surrounded by lictors, soldiers, and ensign-bearers, who carried banners whereon was inscribed the motto, 'Aut Caesar aut nihil'.
Finally, an the fourth Sunday, in Lent, the pope conferred upon Caesar the dignity he had so long coveted, and appointed him general and gonfaloniere of the Holy Church.
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.