The year is 403 B.C. The Athenian philosopher Xenophon finds himself with an army of Greeks marching to what is now Turkey. Their mission: to aid the Persian pretender Cyrus in a war against his brother Artaxerxes. At a great battle, Cyrus is killed and his army destroyed--except for the Greeks holding his right flank. Xenophon and the Greeks are now stranded in the heart of the Persian Empire, outnumbered a hundred to one. The story of Xenophon's...