Roman army of the mid-Republic placed unprecedented strains on Roman manpower, not least on the Order of Knights and the First Class of commoners which provided the cavalry. During Hannibal's apocalyptic march through Italy (218–216 BC), thousands of Roman cavalrymen were killed in the field. The losses were especially serious for the equestrian order, which also provided the army's senior officers. Livy relates how, after Cannae, gold rings (a badge of knightly rank), recovered from the corpses of Roman knights formed a pile one "modius" (about 9 litres) large. In the succeeding years 214–203 BC, the Romans kept at least 21 legions in the field
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