Thermopyle and the Persians

Thermopyle is a military science concept involving how different factors can cause a small force to achieve results that are well beyond what you'd think would be possible. The greeks determinedly held their ground, rebuffing every attack that the persians launched against them. For two days, the greeks seemed largely unaffected by the persian assault. They killed thousands and thousands of persians for the loss of only a handful of greeks. Xerxes was stunned. He couldn't believe the failure of his troops to make any headway whatever. All he had to show for two days of furious fighting were the growing piles of persian dead. But as night fell on the