 The position of Caudium is fixed by the Itineraries, which all concur in placing it on the Appian Way, 21 Roman miles from Capua, and 11 from Beneventum.After the fall of the Western Roman Empire, in the 7th century a Lombard nobleman called Arcolo founded a shelter and fought against Charlemagne.In that occasion the town was fortified and a tower, still visible today, was built at the summit of the hill.