(M185) Astyages, we have seen, was the last of the Median kings. He married his daughter, according to Herodotus, to Cambyses, a Persian noble, preferring him to a higher alliance among the Median princes, in order that a dream might not be fulfilled that her offspring should conquer Asia. On the return of the dream he sought to destroy the child she was about to bear, but it was preserved by a herdsman; and when the child was ten years of age he was chosen by his playfellows on the mountains to be their king. As such he caused the son of a noble Median to be scourged for disobedience, who carried his complaint to Astyages. The Median monarch finds out his pedigree from the herdsman, and his officer, Harpagns, to whom he had intrusted the commission for his destruction. He invites, in suppressed anger, this noble to a feast, at which he serves up the flesh of his own son. Harpagus, in revenge, conspires with some discontented nobles, and invites Cyrus, this boy-king, now the bravest of the youths of his age and country, to a revolt. Cyrus leads his troops against Astyages, and gains a victory, and also the person of the sovereign, and his great reign began, B.C. 558. (M186) The dethronement of Astyages caused a war between Lydia and Persia. Crœsus hastens to attack the usurper and defend his father-in-law. He forms a league with Babylonia and Egypt. Thus the three most powerful monarchs of the world are arrayed against Cyrus, who is prepared to meet the confederation. Crœsus is defeated, and retreats to his capital, Sardis; and the next spring, while summoning his allies, is attacked unexpectedly by Cyrus, and is again defeated. He now retires to Sardia, which is strongly fortified, and the city is besieged, by the Persians, and falls after a brief siege. Crœsus himself is spared, and in his adversity gives wise counsel to his conqueror. (M187) Cyrus leaves a Lydian in command of the captured city, and departs for home. A revolt ensues, which leads to a collision between Persia and the Greek colonies, and the subjection of the Grecian cities by Harpagus, the general of Cyrus. Then followed the conquest of Asia Minor, which required several years, and was conducted by the generals of Cyrus. He was required in Media, to consolidate his power. He then extended his conquests to the East, and subdued the whole plateau of Iran, to the mountains which divided it from the Indus. Thus fifteen years of splendid military successes passed before he laid siege to Babylon, B.C. 538.