Trebia. Trasimene. Cannae. With three stunning victories, Hannibal humbled Rome and nearly shattered its empire. Even today Hannibal's brilliant, if ultimately unsuccessful, campaign against Rome during the Second Punic War (218-202 BC) make him one of history's most celebrated military leaders. This biography by Cornelius Nepos (c. 100-27 BC) sketches Hannibal's life from the time he began tra…