And the Spartans themselves, masters of psychological as well as every other form of warfare, knew precisely how to turn their enemies’ blood to ice. From far off, the advance of their phalanx would be heralded by the shrilling of high-pitched pipes, and the earth would shake with the rhythm of their slow and metronomic approach. Then, as they emerged through the dust of battle, a dazzling ‘wall of bronze and scarlet’
