The Histories · 7.208

As they were thus deliberating, Xerxes sent a scout on horseback to see how many they were in number and what they were doing; for he had heard while he was yet in Thessaly that there had been assembled in this place a small force, and that the leaders of it were Lacedemonians together with Leonidas, who was of the race of Heracles. And when the horseman had ridden up towards their camp, he looked upon them and had a view not indeed of the whole of their army, for of those which were posted within the wall, which they had repaired and were keeping a guard, it was not possible to have a view, but he observed those who were outside, whose station was in front of the wall; and it chanced at that time that the Lacedemonians were they who were posted outside. So then he saw some of the men practising athletic exercises and some combing their long hair: and as he looked upon these things he…

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
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