Battle of Cannae and General Norman Schwartzkopf claimed to have drawn inspiration from Hannibal's success for his devastatingly effective land offensive in the First Gulf War. Shortly after the start of the Second Punic War, Hannibal crossed into Italy by traversing the Pyrenees and the Alps during the summer and early autumn of 218 BC. He quickly won major victories over the Romans at Trebia and at Lake Trasimene. After these losses, the Romans appointed Quintus Fabius Maximus Verrucosus as dictator to deal with the threat. Fabius used attrition warfare against Hannibal, cutting off his supply lines and avoiding pitched battles. These tactics
Early Middle Ages had broken down, and the Roman army comprised mainly barbarians and soldiers recruited for a single campaign. The general decline in discipline also led to the use of smaller shields and lighter weaponry. Not wanting to share the glory, Eastern Emperor Valens ordered an attack on the Therving infantry under Fritigern without waiting for Western Emperor Gratian, who was on the way with reinforcements. While the Romans were fully engaged, the Greuthung cavalry arrived. Only one-third of the Roman army managed to escape. This represented the most shattering defeat that the Romans had suffered since the Battle of Cannae (216