The Persian cavalry and transport filtered slowly through the narrow passage of Thermopylæ, and marched on towards Athens, while a series of naval encounters went on at sea. The Hellenic fleet retreated before the advance of the Persian shipping, which suffered seriously through its comparative ignorance of the intricate coasts and of the tricks of the local weather. Weight of numbers carried the Persian army forward to Athens; now that Thermopylæ was lost, there was no line of defence nearer than the Isthmus of Corinth, and this meant the abandonment of all the intervening territory, including Athens. The population had either to fly or submit to the Persians. Thebes with all Bœotia submitted, and was pressed into the Persian army, except one town, Platæa, whose inhabitants fled to Athens. The turn of Athens came next, and great efforts were made to persuade her to make terms; but, instead, the whole population determined to abandon everything and take to the shipping. The women and non-combatants were carried to Salamis and various adjacent islands. Only a few people too old to move and a few dissentients remained in the town, which was occupied by the Persians and burnt. The sacred objects, statues, etc., which were burnt at this time, were afterwards buried in the Acropolis by the returning Athenians, and have been dug up in our own day with the marks of burning visible upon them. Xerxes sent off a mounted messenger to Susa with the news, and he invited the sons of Peisistratus, whom he had brought back with him, to enter upon their inheritance and sacrifice after the Athenian manner upon the Acropolis.

Meanwhile, the Hellenic confederate fleet had come round to Salamis, and in the council of war there were bitter differences of opinion. Corinth and the states behind the Isthmus wanted the fleet to fall back to that position, abandoning the cities of Megara and Ægina. Themistocles insisted with all his force on fighting in the narrows of Salamis. The majority was steadily in favour of retreat, when there suddenly arrived the news that retreat was cut off. The Persians had sailed round Salamis and held the sea on the other side. This news was brought by that Aristides the Just, of whose ostracism we have already told; his sanity and eloquence did much to help Themistocles to hearten the hesitating commanders. These two men had formerly been bitter antagonists; but with a generosity rare in those days, they forgot their differences before the common danger. At dawn the Greek ships pulled out to battle.

The fleet before them was a fleet more composite and less united than their own. But it was about three times as great. On one wing were the Phœnicians, on the other Ionian Greeks from Asia and the Islands. Some of the latter fought stoutly; others remembered that they too were Greeks. The Greek ships, on the other hand, were mostly manned by freemen fighting for their homes. Throughout the early hours the battle raged confusedly. Then it became evident to Xerxes, watching the combat, that his fleet was attempting flight. The flight became disaster.



Xerxes had taken his seat to watch the battle. He saw his galleys rammed by the sharp prows of other galleys; his fighting-men shot down; his ships boarded. Much of the sea-fighting in those days was done by ramming; the big galleys bore down their opponents by superior weight of impact, or sheared off their oars and so destroyed their manœuvring power and left them helpless. Presently, Xerxes saw that some of his broken ships were surrendering. In the water he could see the heads of Greeks swimming to land; but “of the Barbarians the greater number perished in the sea, not knowing how to swim.” The clumsy attempt of the hard-pressed first line of the Persian fleet to put about led to indescribable confusion. Some were rammed by the rear ships of their own side. This ancient shipping was poor, unseaworthy stuff by any modern standards. The west wind was blowing and many of the broken ships of Xerxes were now drifting away out of his sight to be wrecked on the coast beyond. Others were being towed towards Salamis by the Greeks. Others, less injured and still in fighting trim, were making for the beaches close beneath him that would bring them under the protection of his army. Scattered over the further sea, beyond the headlands, remote and vague, were ships in flight and Greek ships in pursuit. Slowly, incident by incident, the disaster had unfolded under his eyes. We can imagine something of the coming and going of messengers, the issuing of futile orders, the changes of plan, throughout the day. In the morning Xerxes had come out provided with tables to mark the most successful of his commanders for reward. In the gold of the sunset he beheld the sea power of Persia utterly scattered, sunken and destroyed, and the Greek fleet over against Salamis unbroken and triumphant, ordering its ranks, as if still incredulous of victory.

The Persian army remained as if in indecision for some days close to the scene of this sea fight, and then began to retreat to Thessaly, where it was proposed to winter and resume the campaign. But Xerxes, like Darius I before him, had conceived a disgust for European campaigns. He was afraid of the destruction of the bridge of boats. With part of the army he went on to the Hellespont, leaving the main force in Thessaly under a general, Mardonius. Of his own retreat the historian relates:

“Whithersoever they came on the march and to whatever nation they seized the crops of that people and used them for provisions; and if they found no crops, then they took the grass which was growing up from the earth, and stripped off the bark from the trees and plucked down the leaves and devoured them; alike of the cultivated trees and of those growing wild; and they left nothing behind them: thus they did by reason of famine. Then plague too seized upon the army and dysentery, which destroyed them by the way, and some of them also who were sick the king left behind, laying charge upon the cities where at the time he chanced to be in his march, to take care of them and support them; of these he left some in Thessaly, and some at Siris in Paionia, and some in Macedonia.... When, passing on from Thrace they came to the passage, they crossed over the Hellespont in haste to Abydos by means of the ships, for they did not find the floating bridges still stretched across, but broken up by a storm. While staying there for a time they had distributed to them an allowance of food more abundant than they had had by the way, and from satisfying their hunger without restraint and also from the changes of water there died many of those in the army who had remained safe till then. The rest arrived with Xerxes at Sardis.”