48. So numerous was the host that, marching day and night without intermission, and goaded by the whip, it occupied seven days in crossing the straits by the two bridges. On the Thracian plain of Doris´cus, near the sea, the army was drawn up for a final review. The land force consisted of forty-six nations. According to Herodotus, who gathered his information by most careful inquiry of persons who were present, the foot soldiers numbered 1,700,000; the war-chariots and camels, 20,000; the horse, 80,000. The fleet consisted of 1,207 triremes, and 3,000 smaller vessels, carrying in all 517,610 men. Beside this actual fighting force, we must suppose an equal number of slaves, attendants, and the crews of provision ships, making a total of more than five millions of human beings.

49. Several rivers were dried in giving drink to this multitude, while their food, even the scanty allowance of Asiatic slaves, amounted to 662,000 bushels of flour each day; but the excellent commissariat of Xerxes, which had been organizing for seven years, was not at fault. On the march from Doriscus toward Greece, the king, still within his own empire, received further accessions from Thracian, Macedonian, and other European tribes, so that his fighting force at Thermop´ylæ amounted to 2,640,000 men. Various cities along the route had been commanded to furnish each one meal for the army; and although they had spent years in preparation, some were ruined by the expense.[30]

50. Meanwhile the Greeks had not been idle. The ten years since the battle of Marathon had been employed in active drilling of forces, by sea and land. Each state furnished its quota; and though but a handful compared with the myriads of invaders, they had the strength, derived from patriotism and high discipline, to oppose the mere material mass and weight of the Persian host. It was mind against matter.

B. C. 480.

51. Abandoning the defense of Thessaly, which was open by too many avenues to the Persians, the little army of Leon´idas, king of Sparta, had made a resolute stand at Thermopylæ, a narrow pass between Mount Œta and the sea. The whole force amounted to only 6,000 men, of whom but 300 were Spartans. Xerxes waited several days upon the Trachinian plain, expecting that this little band would melt away from mere terror at the sight of his vast numbers. At length he sent the Median cavalry to force a passage. They were repulsed with loss. The Immortals made the same attempt with no better success. At this point, Ephial´tes, a Malian, offered for a large reward to show the invaders a mountain-path by which they could reach the rear of the Spartan camp. The Phocian guards of this path were overpowered. Leonidas learned that he was betrayed, and declaring that he and his Spartans must remain at their post, dismissed all the rest of his army except the Thespians and Thebans. Then, before the body of Persians who were crossing the mountain, under lead of the traitor, could attack him from behind, he threw himself upon the enemy in front, resolving to exact as dear a vengeance as possible. Many of the Persian host fell beneath the Spartan swords, many were trodden to death by their own multitudes, and many were forced into the sea. Leonidas soon fell, and the contest for his body inspired his men with new fury. Having recovered it, they placed their backs against a wall of stone and fought until every man was slain.

52. During the same days several battles were fought at sea between the Greek and Persian fleets. No decisive advantage was gained by either side, but the result was most disheartening to the Persians, who had been most confident of success. The elements, too, had neither been scourged nor scolded into good behavior; a terrible hurricane raged three days and nights upon the coast of Thessaly, tearing the ships from their moorings and dashing them against the cliffs. At least four hundred ships of war were thus destroyed, beside a countless number of transports with their stores and treasures. Another squadron of two hundred vessels, which had been sent around Eubœa to cut off the retreat of the Greeks, perished, in a sudden tempest, upon the rocks. The Grecian commanders were unable to profit by these advantages, for the defeat at Thermopylæ compelled them to withdraw from Artemis´ium to provide for the safety of Attica and the Peloponnesus.

53. By the death of the Spartan three hundred, the gates of Greece were thrown open, and the hosts of Asia poured through, wasting the country with fire and sword. At Pano´peus a detachment was sent to plunder the temple of Apollo at Delphi, while Xerxes led his main army through Bœo´tia. On the march he received the submission of all the people except the Platæans and Thespians, who, rather than yield to an invader, abandoned their cities to be burnt. Before his arrival at Athens, the chief object of his revenge, the king heard of the total defeat of his Delphian expedition. According to Greek tradition, no mortal hand turned back the invaders, but Apollo himself hurled down great rocks and crags upon their heads, in the dark ravines of Parnassus, and thus defended his sanctuary.

B. C. 480.

54. Athens was a deserted city. All the fighting men were with the fleet, while women, children, and infirm persons had been removed to Salamis, Ægi´na, or Trœze´ne. The conqueror stormed the citadel, plundered and burnt the temples, and sent word to Susa that Athens had shared the fate of Sardis.

55. Xerxes now resolved upon a decisive naval battle in the Saronic Gulf. The Grecian fleet had assembled off Salamis, to the number of 378 vessels, while the Persians numbered 1,200. A throne was erected on the mainland, upon the slope of Mount Ægaleos, from which the great king beheld the struggle which was to end his dreams of conquest. The Persian fleet occupied the channel between Salamis and the coast of Attica. Their vast numbers, crowded into so narrow a space, were a fatal disadvantage to themselves, for they could only come near the Greeks by small detachments; while the latter, more accustomed to those waters, drove their brazen-pointed prows into the sides of the Persians, advancing and retiring with wonderful dexterity and surety of aim. Feeling the eye of their king upon them, the Persians fought with desperate bravery. The battle lasted all day; when night fell, Xerxes saw his forces scattered or destroyed, and instead of renewing the battle, resolved to seek his own safety in retreat.