This was, therefore, an excellent place to defend. The Greek ships were all drawn up on the farther side of Euboea to prevent the Persian vessels from getting into the strait and landing men beyond the pass, and a division of the army was sent off to guard the Hot Gates. The council at the Isthmus did not know of the mountain pathway, and thought that all would be safe as long as the Persians were kept out of the coast path.
The troops sent for this purpose were from different cities, and amounted to about 4,000, who were to keep the pass against two millions. The leader of them was Leonidas, who had newly become one of the two kings of Sparta, the city that above all in Greece trained its sons to be hardy soldiers, dreading death infinitely less than shame. Leonidas had already made up his mind that the expedition would probably be his death, perhaps because a prophecy had been given at the Temple of Delphi that Sparta should be saved by the death of one of her kings of the race of Hercules. He was allowed by law to take with him 300 men, and these he chose most carefully, not merely for their strength and courage, but selecting those who had sons, so that no family might be altogether destroyed. These Spartans, with their helots or slaves, made up his own share of the numbers, but all the army was under his generalship. It is even said that the 300 celebrated their own funeral rites before they set out, lest they should be deprived of them by the enemy, since, as we have already seen, it was the Greek belief that the spirits of the dead found no rest till their obsequies had been performed. Such preparations did not daunt the spirits of Leonidas and his men, and his wife, Gorgo, who was not a woman to be faint-hearted or hold him back. Long before, when she was a very little girl, a word of hers had saved her father from listening to a traitorous message from the King of Persia; and every Spartan lady was bred up to be able to say to those she best loved that they must come home from battle 'with the shield or on it'-either carrying it victoriously or borne upon it as a corpse.
When Leonidas came to Thermopylae, the Phocians told him of the mountain path through the chestnut woods of Mount Ceta, and begged to have the privilege of guarding it on a spot high up on the mountain side, assuring him that it was very hard to find at the other end, and that there was every probability that the enemy would never discover it. He consented, and encamping around the warm springs, caused the broken wall to be repaired, and made ready to meet the foe.
The Persian army were seen covering the whole country like locusts, and the hearts of some of the southern Greeks in the pass began to sink. Their homes in the Peloponnesus were comparatively secure-had they not better fall back and reserve themselves to defend the Isthmus of Corinth? But Leonidas, though Sparta was safe below the Isthmus, had no intention of abandoning his northern allies, and kept the other Peloponnesians to their posts, only sending messengers for further help.
Presently a Persian on horseback rode up to reconnoitre the pass. He could not see over the wall, but in front of it, and on the ramparts, he saw the Spartans, some of them engaged in active sports, and others in combing their long hair. He rode back to the king, and told him what he had seen. Now, Xerxes had in his camp an exiled Spartan Prince, named Demaratus, who had become a traitor to his country, and was serving as counsellor to the enemy. Xerxes sent for him, and asked whether his countrymen were mad to be thus employed instead of fleeing away; but Demaratus made answer that a hard fight was no doubt in preparation, and that it was the custom of the Spartans to array their hair with special care when they were about to enter upon any great peril. Xerxes would, however, not believe that so petty a force could intend to resist him, and waited four days, probably expecting his fleet to assist him, but as it did not appear, the attack was made.
The Greeks, stronger men and more heavily armed, were far better able to fight to advantage than the Persians, with their short spears and wicker shields, and beat them off with great ease. It is said that Xerxes three times leapt off his throne in despair at the sight of his troops being driven backwards; and thus for two days it seemed as easy to force a way through the Spartans as through the rocks themselves. Nay, how could slavish troops, dragged from home to spread the victories of an ambitious king, fight like freemen who felt that their strokes were to defend their homes and children!
But on that evening a wretched man, named Ephialtes, crept into the Persian camp, and offered, for a great sum of money, to show the mountain path that would enable the enemy to take the brave defenders in the rear! A Persian general, named Hydarnes, was sent off at nightfall with a detachment to secure this passage, and was guided through the thick forests that clothed the hillside. In the stillness of the air, at daybreak, the Phocian guards of the path were startled by the crackling of the chestnut leaves under the tread of many feet. They started up, but a shower of arrows was discharged on them, and forgetting all save the present alarm, they fled to a higher part of the mountain, and the enemy, without waiting to pursue them, began to descend.
As day dawned, morning light showed the watchers of the Grecian camp below a glittering and shimmering in the torrent bed where the shaggy forests opened; but it was not the sparkle of water, but the shine of gilded helmets and the gleaming of silvered spears! Moreover, a Cimmerian crept over to the wall from the Persian camp with tidings that the path had been betrayed, that the enemy were climbing it, and would come down beyond the Eastern Gate. Still, the way was rugged and circuitous, the Persians would hardly descend before midday, and there was ample time for the Greeks to escape before they could be shut in by the enemy.
There was a short council held over the morning sacrifice. Megistias, the seer, on inspecting the entrails of the slain victim, declared, as well he might, that their appearance boded disaster. Him Leonidas ordered to retire, but he refused, though he sent home his only son. There was no disgrace to an ordinary tone of mind in leaving a post that could not be held, and Leonidas recommended all the allied troops under his command to march away while yet the way was open. As to himself and his Spartans, they had made up their minds to die at their post, and there could be no doubt that the example of such a resolution would do more to save Greece than their best efforts could ever do if they were careful to reserve themselves for another occasion.
All the allies consented to retreat, except the eighty men who came from Mycenae and the 700 Thespians, who declared that they would not desert Leonidas. There were also 400 Thebans who remained; and thus the whole number that stayed with Leonidas to confront two million of enemies were fourteen hundred warriors, besides the helots or attendants on the 300 Spartans, whose number is not known, but there was probably at least one to each. Leonidas had two kinsmen in the camp, like himself, claiming the blood of Hercules, and he tried to save them by giving them letters and messages to Sparta; but one answered that 'he had come to fight, not to carry letters'; and the other, that 'his deeds would tell all that Sparta wished to know'. Another Spartan, named Dienices, when told that the enemy's archers were so numerous that their arrows darkened the sun, replied, 'So much the better, we shall fight in the shade.' Two of the 300 had been sent to a neighboring village, suffering severely from a complaint in the eyes. One of them, called Eurytus, put on his armor, and commanded his helot to lead him to his place in the ranks; the other, called Aristodemus, was so overpowered with illness that he allowed himself to be carried away with the retreating allies. It was still early in the day when all were gone, and Leonidas gave the word to his men to take their last meal. 'To-night,' he said, 'we shall sup with Pluto.'