Veneto of their Celtic neighbours. During the 3rd century BC, the Veneti, together with the Cenomani Celts on their western border, sided with the Romans, as Rome expanded and struggled against the Insubres and Boii (Celts). During the Second Punic War (218 – 202 BC), the Veneti even sent a contingent of soldiers to fight alongside the Romans against Hannibal and the invading Carthaginians. These Venetians were among those slaughtered at the Battle of Cannae (216 BC). In 181 BC a Roman triumvirate of Publius Cornelius Scipio Nasica, Caius Flaminius, and Lucius Manlius Acidinus founded a Latin colony at Aquileia as
Ordona economic decline began during the 4th Century BC. The construction of defensive walls during this period suggests a period of battles with other centres in the region, probably comprising clashes with the Greek Hegemonic Cities in the territory, among them neighbouring Taranto. It passed over to the Romans, with the rest of Apulia, after the wars of the Greek-Messapian League, commanded by King Pirro of Epiro (280-275 BC). Herdonia was a protagonist during the Second Punic War (219-202 BC) and in particular, during the events linked to the war's most famous battle at Cannae on 2 August 216 BC. According