Whilst himself remaining in Naples with Prospero Colonna, he sent the bulk of his forces to Capua under Fabrizio Colonna and Count Rinuccio Marciano--the brother of that Marciano whom Vitelli had put to death in Tuscany.
Ravaging the territory and forcing its strongholds as they came, the allies were under the walls of Capua within three weeks of setting out; but on July 17, when within two miles of the town, they were met by six hundred lances under Colonna, who attempted to dispute their passage.
It was Cesare Borgia himself who led the charge against them.

Jean d'Auton--in his Chronicles of Louis XII--speaks in warm terms of the duke's valour and of the manner in which, by words and by example, he encouraged his followers to charge the Colonna forces, with such good effect that they utterly routed the Neapolitans, and drove them headlong back to the shelter of Capua's walls.
The allies brought up their cannon, and opened the bombardment.

This lasted incessantly from July 17--which was a Monday--until the following Friday, when two bastions were so shattered that the French were able to gain possession of them, putting to the sword some two hundred Neapolitan soldiers who had been left to defend those outworks.

Thence admittance to the town itself was gained four days later--on the 25th--through a breach, according to some, through the treacherous opening of a gate, according to others.

Through gate or breach the besiegers stormed to meet a fierce resistance, and the most horrible carnage followed.