Know Your Enemy

In 216 BCE, the Carthaginian general Hannibal faced off against the Roman Republic’s army led by the generals Consuls Lucius Aemilius Paullus and Gaius Terentius Varro at what is known as the Battle of Cannae during the Second Punic War. Hannibal’s forces were significantly outnumbered by the Romans by almost 2 to 1, but he devised a brilliant strategy based on his deep understanding of Roman military tactics and psychology.

Hannibal knew that the Romans heavily relied on their traditional tactics, which focused on a solid and deep central formation with flanking maneuverability. He cleverly used this knowledge against them. Hannibal positioned his infantry in a convex formation with a very thin line of men in the center, positioning himself behind this thin line. He knew the Romans wouldn’t be able to resist attacking that vulnerable center thinking that once they conquered their center formation, they could break Hannibal’s army in two and overpower each side. Yet this is what Hanibal was hoping for. So when the Roman legions pressed down the center of their line, assuming their plan was working, they failed to realize that Hannibal’s flanks executed a double envelopment, which eventually entirely surrounded the Romans and their army.

The Roman commanders misunderstood their opponent. They failed to grasp Hannibal’s innovative strategy and underestimated his military prowess. Instead of adapting their tactics to counter Hannibal’s maneuvers, they stubbornly stuck to their traditional methods. This led to a devastating defeat for the Romans, where an estimated 70,000 Roman soldiers were killed and another 10,000 or so captured. Hanibal, on the other hand, only lost 8,000 men. Some say Rome lost 20% of their adult male population from the failure of this battle alone.