Aristagoras first applied to Sparta for aid. When arguments failed, he tried to bribe the king Cleomenes. In the room was the King's little daughter Gorgo. Hearing Aristagoras gradually raise his offer from ten to fifty talents, the child said, "Father, depart, or the stranger will corrupt thee". Aristagoras received a better welcome at Athens. That city in 510 had expelled Hippias, the tyrant son of Peisistratus, who appealed to Artaphernes for aid. Hearing this, the Athenians sent an embassy asking the satrap not to assist the exile, but the answer was that if they wished to survive, they must receive their ruler back. Aristagoras therefore found the Athenians in a fit frame of mind to listen. They lent him a fleet of twenty sail and marched with him to Sardis which they captured and burned in 501. The revolt speedily spread over all the Asiatic sea-coast. On hearing of the Athenians for the first time, Darius directed a slave to say to him thrice a day, "Sire, remember the Athenians". He summoned Histiaeus and accused him of complicity in the revolt, but Histiaeus assured him of his loyalty and obtained permission to go to the coast. Meanwhile the Persians took strong action against the rebels, subduing many towns and districts. The book ends with the flight of Aristagoras to Myrcinus and his death in battle against the Thracians in 496.
The next book opens with the famous accusation of Histiaeus by Artaphernes: "Thou hast stitched this boot and Aristagoras hath put it on." Histiaeus in fear fled to his own city Miletus; being disowned there, he for a time maintained a life of privateering, but was eventually captured and crucified by Artaphernes. The Ionian revolt had been narrowed down to Miletus and one or two less important towns. The Greeks assembled a fleet, but a spirit of insubordination manifesting itself they were defeated at sea in the battle of Lade in 495. Next year Miletus fell but was treated with mercy. At Athens the news caused the greatest consternation; a dramatic poet named Phrynichus ventured to stage the disaster; the people wept and fined him a thousand talents, forbidding any similar presentation in future. Stamping out the last embers of revolt in Asia the Persians coasted along Thrace; before their advance the great Athenian Miltiades was compelled to fly from the Dardanelles to his native city. In 492 Mardonius was appointed viceroy of Asia Minor. He reorganised the provincial system and then attempted to double the perilous promontory of Athos, but only a remnant of his forces returned to Asia.
Next year Darius sent to all the Greek cities demanding earth and water, the tokens of submission. The islanders obeyed including Aegina, the deadly foe of Athens. A protest made by the latter led to a war between the two states in which Athens was worsted. Sparta itself had just been torn by an internal dissension between two claimants of the throne, one of whom named Demaratus had been ejected and later fled to the Persian court. The great expedition of 490 sailed straight across the Aegean, commanded by Datis and Artaphernes. Their primary objective was Eretria in Euboea, a city which had assisted the Ionians in their revolt. The town was speedily betrayed, the inhabitants being carried aboard the Persian fleet. Guided by Hippias the armament landed at the bay of Marathon, twenty-five miles from Athens. A vain appeal was sent to Sparta for succours; Athens, supported by the little Boeotian city of Plataea, was left to cope with the might of Persia.
It was fortunate that the Athenians could command the services of Miltiades who had already had some experience of the Persian methods of attack. The details of the great battle that followed depend upon the sole authority of Herodotus among the Greek writers. Many difficulties are caused by his narrative, but it seems certain that Miltiades was in command on the day on which the battle was actually fought. He apparently clung to the hills overlooking the plain and bay of Marathon until the Persian cavalry were unable to act. Seizing the opportunity, he led his men down swiftly to the combat; his centre which had been purposely weakened was thrust back but the two wings speedily proved victorious, then converged to assist the centre, finally driving the foe to the sea where a desperate conflict took place. The Persians succeeded in embarking and promptly sailed round the coast to Athens, but seeing the victors in arms before the town they sailed back to Asia. The Spartan reinforcements which arrived too late for the battle viewed the Persian dead and returned after praising the Athenians.
A slight digression tells the amusing story how the Athenian Hippocleides in his cups lost the hand of the princess of Sicyon because he danced on his head and waved his legs about, shouting that he didn't care. The great victor Miltiades did not long survive his glory. His attempt to reduce the island of Paros, which had sided with Persia, completely failed. Returning to Athens he was condemned and fined, shortly after dying of a mortified thigh.
In the third portion Herodotus gradually rises to his greatest height of descriptive power. Darius resolved on a larger expedition to reduce Greece. He made preparations for three years, then a revolt in Egypt delayed his plans and his career was cut short by death in 485. His successor Xerxes was disinclined to invade Europe, but was overborne by Mardonius his cousin. A canal was dug across the peninsula of Athos, a bridge was built over the Hellespont, and provisions were collected. A detailed account of the component forces is given, special mention being made of Artemisia, Queen of Herodotus' own city, who was to win great glory in the campaign. The army marched over the Hellespont and along the coast, the fleet supporting it; advancing through Thessaly, it reached the pass of Thermopylae, opposite Euboea, in 480.
On the Greek side was division; the Spartans imagined that their duty was to save the Peloponnese only; they were eager to build a wall across the isthmus of Corinth, leaving the rest of Greece to its fate. But Athens had produced another genius named Themistocles. Shortly before the invasion the silver mines at Laureium in Attica had yielded a surplus; he persuaded the city to use it for building a fleet of two hundred sail to be directed against Aegina. When the Athenians got an oracle from Delphi which stated that they would lose their land but be saved by their wooden walls, he interpreted the oracle as referring to the fleet. Under his management the city built more ships. The Council of Greece held at the Isthmus of Corinth decided that an army should defend Thermopylae while the fleet supported it close by at Artemisium. The Persian fleet had been badly battered in a storm as it sailed along the coast of Magnesia, nearly four hundred sail foundering; the remainder reached safe anchorage in the Malian gulf, further progress being impossible till the Greek navy was beaten or retired.
At Thermopylae the advance-guard was composed of Spartans led by Leonidas who determined to defend the narrow pass. A Persian spy brought the news to Xerxes that this small body of warriors were combing their hair. The King sent for Demaratus, the ex-Spartan monarch, who assured him that this was proof that the Spartans intended to fight to the death. After a delay of four days the fight began. The Spartans routed all their opponents including the famous Immortals, the Persian bodyguard. At length a traitor Ephialtes told Xerxes of a path across the mountains by which Leonidas could be taken in the rear. Learning from deserters and fugitives that he had been betrayed, Leonidas dismissed the main body, himself advancing into the open. After winning immortal glory he and his men were destroyed and the way to Greece lay open to the invader.
In three naval engagements off Artemisium the Greek fleet showed its superiority; a detachment of two hundred sail had been sent round the island of Euboea to block up the exit of the channel through which the Greek navy had to retreat, but a storm totally destroyed this force. When the army retreated from Thermopylae the Greek ships were obliged to retire to the Isthmus; in spite of much opposition the Athenians compelled Eurybiades the Spartan admiral to take up his station at Salamis, whither the Persian navy followed. Their army had advanced through Boeotia, attacking Delphi on the way. The story was told how Apollo himself defended his shrine, hurling down rocks on the invaders and sending supernatural figures to discomfit them. Entering Attica the barbarian host captured a deserted Athens, Xerxes sending the glad news to his subjects in the Persian capital.
The Greeks were with difficulty persuaded not to abandon the sea altogether. Themistocles was bitterly opposed in his naval policy by Adeimantus, the Corinthian; it was only by threatening to leave Greece with their fleet that the Athenians were able to bring the allies to reason. By a stroke of cunning Themistocles forced their hands; a messenger went to Xerxes with news of the Greek intention to retreat; on hearing this the Persians during the night blocked up the passages round Salamis and landed some of their best troops on a little island called Psyttaleia. The news of this encircling movement was brought to the allies by Aristides, a celebrated Athenian who was in exile, and was confirmed by a Tenian ship which deserted from the Persians. Next morning the Greeks sailed down the strait to escape the blockade and soon the famous battle began. Among the brave deeds singled out for special mention none was bolder than that of Artemisia who sank a friend to escape capture. The remainder of the Persian captains had no chance of resisting, being huddled up in a narrow channel. Seeing Artemisia's courage Xerxes remarked that his men had become women, his women men. The rout of the invaders was quickly completed, the chief glory being won by Aegina and Athens; the victory was consummated by the slaughter of the troops on Psyttaleia. The Persian monarch sent tidings of this defeat to his capital and in terror of a revolt in Ionia decided to retreat, leaving Mardonius in command of picked troops. He hurriedly passed along the way he had come, almost disappearing from Herodotus' story.