While his condottieri took over the siege of Piombino (which ended in 1502), Cesare commanded the French troops in the sieges of Naples and Capua, defended by Prospero and Fabrizio Colonna.
Kým jeho condottieri prebrali obliehanie Piombina (ktoré skončilo roku 1502), Cesare velil francúzskym vojskám v obliehaní Neapola a Capuy, bránenej Prosperom a Fabriziom Colonna.