Cyrus the Younger in the context of "Photios I of Constantinople"

Xenophon of Athens (/ˈzɛnəfən, -ˌfɒn/; Ancient Greek: Ξενοφῶν; c. 430 – 355/354 BC) was a Greek military leader, philosopher, and historian. At the age of 30, he was elected as one of the leaders of the retreating Greek mercenaries, the Ten Thousand, who had been part of Cyrus the Younger's attempt to seize control of the Achaemenid Empire. As the military historian Theodore Ayrault Dodge wrote, "the centuries since have devised nothing to surpass the genius of this warrior".

For at least two millennia, it has been debated whether Xenophon was first and foremost a general, historian, or philosopher. For the majority of time in the past two millennia, Xenophon was recognized as a philosopher. Quintilian in The Orator's Education discusses the most prominent historians, orators and philosophers as examples of eloquence and recognizes Xenophon's historical work, but ultimately places Xenophon next to Plato as a philosopher. Today, Xenophon is recognized as one of the greatest writers of antiquity. Xenophon's works span multiple genres and are written in plain Attic Greek, which is why they have often been used in translation exercises for contemporary students of the Ancient Greek language. In the Lives and Opinions of Eminent Philosophers, Diogenes Laërtius observed that Xenophon was known as the "Attic Muse" because of the sweetness of his diction.

Lycaonia (/ˌlɪkiˈoʊniə/; Greek: Λυκαονία, Lykaonia; Turkish: Likaonya) was a large region in the interior of Asia Minor (modern-day Turkey), north of the Taurus Mountains. It was bounded on the east by Cappadocia, on the north by Galatia, on the west by Phrygia and Pisidia, while to the south it extended to the chain of Mount Taurus, where it bordered on the country popularly called in earlier times Cilicia and in the Byzantine period Isauria; but its boundaries varied greatly at different times. The name is not found in Herodotus, but Lycaonia is mentioned by Xenophon as traversed by Cyrus the Younger on his march through Asia. That author describes Iconium as the last city of Phrygia; and in Acts 14:6 Paul, after leaving Iconium, crossed the frontier and came to Lystra in Lycaonia. Ptolemy, on the other hand, includes Lycaonia as a part of the province of Cappadocia, with which it was associated by the Romans for administrative purposes; but the two countries are clearly distinguished both by Strabo and Xenophon and by authorities generally.

Arses or Arsaces (c. 445–359/8 BC), known by his regnal name Artaxerxes II (Old Persian: 𐎠𐎼𐎫𐎧𐏁𐏂 Artaxšaçāʰ; Ancient Greek: Ἀρταξέρξης), was King of Kings of the Achaemenid Empire from 405/4 BC to 359/8 BC. He was the son and successor of Darius II (r. 423 – 405/4 BC) and his mother was Parysatis.

Soon after his accession, Artaxerxes II faced opposition from his younger brother Cyrus the Younger, who assembled an army composed of troops from his Lydian and Ionian satrapies as well as Greek mercenaries in his bid for the throne. The forces of the brothers clashed at Cunaxa in 401 BC, which resulted in the defeat and death of Cyrus. Following this, Artaxerxes II had to contend with several other revolts; a revolt by Evagoras I (r. 411–374 BC) in Cyprus between 391–380 BC, by the Phoenicians in c. 380 BC, and most importantly, the revolts by the western satraps (known as the Great Satraps' Revolt) in the 360s and 350s BC, led by distinguished figures such as Datames, Ariobarzanes, and Autophradates.

The Ten Thousand (Ancient Greek: οἱ Μύριοι, hoi Myrioi) were a force of mercenary units, mainly Greeks, employed by Cyrus the Younger to attempt to wrest the throne of the Persian Empire from his brother, Artaxerxes II. Their march to the Battle of Cunaxa and back to Greece (401–399 BC) was recorded by Xenophon, one of their leaders, in his work Anabasis.

The Battle of Cunaxa was fought in the late summer of 401 BC between the Persian king Artaxerxes II and his brother Cyrus the Younger for control of the Achaemenid throne. The great battle of the revolt of Cyrus took place 70 km north of Babylon, at Cunaxa (Greek: Κούναξα), on the left bank of the Euphrates. The main source is Xenophon, a Greek soldier who participated in the fighting. Despite the success in the battle achieved by the interaction of the Greek mercenaries and the Persian troops of Cyrus, the outcome of the battle and the death of the pretender to the throne led to the defeat of the entire uprising and forced Greeks to commit Anabasis.

Anabasis (/əˈnæbəsɪs/ ə-NAB-ə-sis; Ancient Greek: Ἀνάβασις [anábasis]; lit. 'An Ascent') is the most famous work of the Ancient Greek professional soldier and writer Xenophon. It gives an account of the expedition of the Ten Thousand, an army of Greek mercenaries hired by Cyrus the Younger to help him seize the throne of Persia from his brother, Artaxerxes II, in 401 BC.

The seven books making up the Anabasis were composed c. 370 BC. Although as an Ancient Greek vocabulary word (ᾰ̓νᾰ́βᾰσῐς) meaning 'embarkation', 'ascent' or 'mounting up', the title Anabasis has been rendered by some translators as The March Up Country or as The March of the Ten Thousand. The story of the army's journey across Asia Minor and Mesopotamia is Xenophon's best known work and "one of the great adventures in human history".

Sophaenetus (Ancient Greek: Σοφαίνετος, romanized: Sophainetos) was one of the leaders of the Ten Thousand, an army of Greek mercenaries in the service of Cyrus the Younger, in 401–400 BC. A native of Stymphalus, he was an older man when he recruited and led one thousand hoplites to join Cyrus. He led the army back to the Black Sea and from Trapezus to Cerasus by ship. At Cotyora, he was fined 10 minae for mishandling funds.

The main source for Sophaenetus' career is the Anabasis of Xenophon. Writing in the fifth century AD, Stephanus of Byzantium cites on four occasions a certain Anabasis Kyrou written by Sophaenetus. This is generally presumed to be the same person as mentioned by Xenophon. Stephanus cites him for the names of several places in Asia Minor. The Anabasis Kyrou is not attested outside of Stephanus. The lack of any reference to the work for several centuries after it would have been written is a difficult to explain and its authenticity has been questioned. Some modern scholars regard it as a late forgery, composed after the time of Plutarch. Panico Stylianou suggests that it may be a case of mistaken identity. Pieces of advice attributed to Sophaenetus entered the military handbooks and were misunderstood to refer to a book written by him.