I’d have to give that to the Romans in the Second Punic War. The Carthaginian general Hannibal brought an army over the Alps in 218 B.C. During the next two years he won four battles: Ticinus, 2300 Roman casualties, Roman Consul wounded. Trebia 28,000 Roman Casualties. Trasimene, 15,000 Romans killed, 15,000 captured, Roman Consul killed. […]