Anabasis

Darius and Parysatis had two sons born to them, of whom the elder was Artaxerxes and the younger Cyrus. Now when Darius lay sick and suspected that the end of his life was near, he wished to have both his sons with him. The elder, as it chanced, was with him already; but Cyrus he summoned from the province over which he had made him satrap, and he had also appointed him commander of all the forces that muster in the plain of Castolus. Cyrus accordingly went up to his father, taking with him Tissaphernes as a friend and accompanied by three hundred Greek hoplites, under the command of Xenias of Parrhasia.

When Darius had died and Artaxerxes had become established as king, Tissaphernes falsely accused Cyrus to his brother of plotting against him. And Artaxerxes, believing the accusation, arrested Cyrus, with the intention of putting him to death; his mother, however, made intercession for him, and sent him back again to his province. Now when Cyrus had thus returned, after his danger and disgrace, he set about planning that he might never again be in the power of his brother, but, if possible, might be king in his stead. He had, in the first place, the support of Parysatis, his mother, for she loved him better than the son who was king, Artaxerxes. Again, when any of the King’s court came to visit him, he treated them all in such a way that when he sent them back they were more devoted to him than to the King. He also took care that the barbarians of his own province should be capable soldiers and should feel kindly toward him. Lastly, as regards his Greek force, he proceeded to collect it with the utmost secrecy, so that he might take the King as completely unprepared as possible.