Xenophon of Athens (ˈzɛnəfən,zi-,-fɒn; Ξενοφῶν ksenophɔ̂ːn; 430 – probably 355 or 354 BC) was a Greek military leader, philosopher, and historian, born in Athens. At the age of 30, Xenophon was elected commander of one of the biggest Greek mercenary armies of the Achaemenid Empire, the Ten Thousand, that marched on and came close to capturing Babylon in 401 BC. As the military historian Theodore Ayrault Dodge wrote, "the centuries since have devised nothing to surpass the genius of this warrior". Xenophon established precedents for many logistical operations, and was among the first to describe strategic flanking maneuvers and feints in combat.
Xenophon's Anabasis recounts his adventures with the Ten Thousand while in the service of Cyrus the Younger, Cyrus's failed campaign to claim the Persian throne from Artaxerxes II of Persia, and the return of Greek mercenaries after Cyrus's death in the Battle of Cunaxa. Anabasis is a unique first-hand, humble, and self-reflective account of a military leader's experience in antiquity. On the topic of campaigns in Asia Minor and in Babylon, Xenophon wrote Cyropaedia outlining both military and political methods used by Cyrus the Great to conquer the Neo-Babylonian Empire in 539 BC. Anabasis and Cyropaedia inspired Alexander the Great and other Greeks to conquer Babylon and the Achaemenid Empire in 331 BC.
A student and a friend of Socrates, Xenophon recounted several Socratic dialogues - Symposium, Oeconomicus, Hiero, a tribute to Socrates - Memorabilia, and a chronicle of the philosopher's trial in 399 BC - Apology of Socrates to the Jury. Reading Xenophon's Memorabilia inspired Zeno of Citium to change his life and start the Stoic school of philosophy.
For at least two millennia, Xenophon's many talents fueled the debate of whether to place Xenophon with generals, historians or philosophers. For the majority of time in the past two millennia, Xenophon was recognized as a philosopher.