Cyrus, << SY ruhs, >> the Younger (424?-401 B.C.), a Persian prince, was a son of King Darius II, ruler of the Achaemenid Empire. Cyrus served as satrap (governor) of a province in Asia Minor. Darius died in 404 B.C., and Cyrus’s older brother Artaxerxes II became king. Cyrus revolted against Artaxerxes and tried to seize the throne. He led about 30,000 troops, including more than 10,000 Greek mercenaries (hired troops) into Babylonia, where he fought his brother in 401 B.C. at the Battle of Cunaxa. Cyrus was killed, and the leaders of his forces were seized and then murdered. The mercenaries fled. Their story was told by the Greek historian Xenophon in Anabasis.
