It was not, however, till the beginning of the year B.C. 401 that the enterprise of Cyrus was ripe for execution. The Greek levies were then withdrawn from the various towns in which they were distributed, and concentrated in Sardis, to the number of about 8000; and in March or April of this year Cyrus marched from Sardis with them, and with an army of 100,000 Asiatics. The object of the expedition was proclaimed to be an attack upon the mountain-freebooters of Pisidia; its real destination was a secret to every one except Cyrus himself and Clearchus. Among the Greek soldiers was Xenophon, an Athenian knight, to whom we owe a narrative of the expedition. He went as a volunteer, at the invitation of his friend Proxenus, a Boeotian, and one of the generals of Cyrus.
The march of Cyrus was directed through Lydia and Phrygia. after passing Colossae he arrived at Colaenae, where he was joined by more Greek troops, the number of whom now amounted to 11,000 hoplites and 2000 peltasts. The line of march, which had been hitherto straight upon Pisidia, was now directed northwards. Cyrus passed in succession the Phrygian towns of Peltae, Ceramon Agora, the Plain of Cayster, Thymbrium, Tyriaeum, and Iconium, the last city in Phrygia. Thence he proceeded through Lycaonia to Dana, and across Mount Taurus into Cilicia.