Hannibal
Hannibal is most famous for what he did in the Second Punic War. He marched with an army from Iberia over the Pyrenees and the Alps into northern Italy and defeated the Romans in a series of battles. At the Battle of Cannae, he defeated the largest army Rome had ever put together even though Carthage was heavily outnumbered. The Roman army at Cannae is reckoned at 16 legions and a total of 86,000 men. Over 80% of the army was killed or captured, including many of its commanders.