Life: He was born in Athens about 431 B.C. and was a student of Socrates. He was hired as a mercenary by Cyrus, the younger brother of the Persian king, Artaxerxes, against whom he rebelled. When the rebellion failed at the battle of Cunaxa, Xenophon led the famous retreat of the Ten Thousand, all the Greek mercenaries who were trapped in Mesopotamia. On his return to Greece, he worked as a mercenary for the Spartans in their wars in Asia Minor and in Greece against the Athenians. The Spartans rewarded him with a country estate where he enjoyed the life of the landed gentry. Xenophon lost his estate in a war and settled in Corinth for the remainder of his life. He died sometime after 355 B.C. over 80 years old.
Wrintings on the Persians: His most famous work is Anabasis, the story of the Ten Thousand. It contains a lot of information about Cyrus the Younger, Artaxerxes and the Persian army. He also wrote Cyropaedia, a book about the education and life of Cyrus.