Battle of Cannae shaping the military structure and tactical organization of the Roman Republican army. At Cannae, the Roman infantry assumed a formation similar to the Greek phalanx. This left them vulnerable to Hannibal's tactic of double envelopment since their inability to maneuver independently from the mass of the army made it impossible for them to counter the strategic encirclement used by the Carthaginian cavalry. The laws of the Roman state requiring command to alternate between the two consuls restricted strategic consistency. In the years following Cannae, striking reforms were introduced to address these deficiencies. First, the Romans "articulated the phalanx, then divided
Potenza at present, some south of today's Potenza. The Lucani of Potentia sided against Rome's enemies during the latter's wars against the Samnites and the Bruttii. Subjugated during the 4th century BC (later gaining the status of "municipium"), the Potentini rebelled after the Roman defeat at Cannae in 216 BC. However, the Battle of the Metaurus marked the end of any Carthaginian aspirations in Italy and Potentia was reconquered by the Romans and reduced to the status of military colony. In the 6th century, the city passed to the Lombard Duchy of Benevento. Incursions by Saracens raiders menaced the city until