But at the beginning of spring1 the other generals were deposed by the king from their offices, and Mardonius son of Gobryas, a man young in years and recently married to Darius' daughter Artozostre, came down to the coast at the head of a very great army and fleet. [2] When Mardonius reached Cilicia at the head of this army, he himself embarked on shipboard and sailed with the rest of his ships, while other captains led the land army to the Hellespont. [3] When Mardonius arrived in Ionia in his voyage along the coast of Asia, he did a thing which I here set down for the wonder of those Greeks who will not believe Otanes to have declared his opinion among the Seven that democracy was best for Persia:2 Mardonius deposed all the Ionian tyrants and set up democracies in their cities. [4] He did this and hurried to the Hellespont. When a great multitude of ships and a great army were assembled, the Persians crossed the Hellespont on shipboard and marched through Europe, with Eretria and Athens as their goal. Herodotus, Histories 6.43. «Herodotus, The Histories, Book 6, chapter 43».
This was the stated end of their expedition, but they intended to subdue as many of the Greek cities as they could. Their fleet subdued the Thasians, who did not so much as lift up their hands against it; their land army added the Macedonians to the slaves that they had already, for all the nations nearer to them than Macedonia had been made subject to the Persians before this. [2] Crossing over from Thasos they travelled near the land as far as Acanthus, and putting out from there they tried to round Athos. But a great and irresistible north wind fell upon them as they sailed past and dealt very roughly with them, driving many of their ships upon Athos. [3] It is said that about three hundred ships were lost, and more than twenty thousand men. Since the coasts of Athos abound in wild beasts, some men were carried off by beasts and so perished; others were dashed against the rocks; those who could not swim perished because of that, and still others by the cold. Herodotus, Histories 6.44. «Herodotus, The Histories, Book 6, chapter 44».
Thus it fared with the fleet; as for Mardonius and his land army, while they were encamped in Macedonia, the Brygi of Thrace attacked them by night and killed many of them, wounding Mardonius himself. But not even these could escape being enslaved by the Persians; Mardonius did not depart from those lands before he had subjugated them. [2] After conquering them, he led his army away homewards, since the Brygi had dealt a heavy blow to his army and Athos an even heavier blow to his fleet. This expedition after an inglorious adventure returned back to Asia. Herodotus, Histories 6.45 «Herodotus, The Histories, Book 6, chapter 45».