The historian Polybius described the Roman sack of New Carthage, noting the practice of killing indiscriminately—including cutting dogs in half—was a deliberate policy. This was not random brutality but a calculated psychological tactic to inspire terror and ensure swift surrenders in future conflicts.
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The same cognitive switch that lets us see humanity in animals can be inverted to ignore it in people. This 'evil twin,' dehumanization, makes it psychologically easier to harm others during conflict. Marketers and propagandists exploit both sides of this coin, using cute animals to build affinity and dehumanization to justify aggression.
After Cannae, Rome couldn't defeat Hannibal in open battle, so they adopted a strategy of avoidance, creating a stalemate. For a power on the brink of collapse, simply surviving is a form of victory. This prolonged timeline allowed Rome to regroup, rebuild its manpower, and ultimately go on the offensive.
The Roman war in Spain was less about territorial conquest and more a strategic effort to stop reinforcements from reaching Hannibal in Italy. By engaging Carthaginian forces under Hasdrubal, the Scipio brothers tied down critical enemy armies and resources, preventing Hannibal from receiving the support needed to win.
Rome's political and cultural identity was built on an implacable resolve to never accept defeat or disrespect. This dogged determination, which led them to build a navy from scratch and reject peace talks after catastrophic losses, was their ultimate strategic advantage over more conventional powers.
Showing mercy to disabled enemy combatants is tactically superior for three reasons: it encourages adversaries to surrender rather than fight to the death; it yields valuable intelligence from prisoners; and it establishes a standard of conduct that protects one's own captured soldiers from reciprocal brutality.
After Cannae, Rome desperately needed manpower, yet the Senate refused Hannibal's offer to ransom its captured soldiers. This seemingly counterintuitive decision was a powerful psychological statement to Hannibal, their allies, and their own people: there would be no negotiation, only total war, regardless of the human cost.
Across history, from Nazis calling Jews "pestilence" to Hutus calling Tutsis "cockroaches," propaganda follows a single playbook. By labeling an out-group as non-human (animals, viruses), it deactivates the brain's social cognition and empathy networks, making it psychologically easier to commit atrocities.
Scipio learned that a lagoon protecting New Carthage periodically became shallow. He timed his attack for this moment, presenting the ebbing water to his troops as a miracle promised by the god Neptune. This divine framing inspired his men and enabled a surprise attack on an unguarded wall.
The harsh terms of the First Punic War, which stripped Carthage of territory and imposed a massive indemnity, created deep resentment. This parallels the Treaty of Versailles with Germany, illustrating how overly punitive settlements can sow the seeds of a future war of revenge rather than secure lasting peace.
After his decisive victory at Cannae, Hannibal expected Rome to negotiate terms, as was the norm in ancient warfare. He fatally underestimated their unique, implacable resolve to never capitulate, causing him to miss his window of opportunity to march on the city and enforce a peace.