Unusually we have two very full sources for the reign of Artaxerxes II, both Greek of course.
Xenophon was an upper-class Athenian who preferred Sparta to his own city, and was a great admirer of Cyrus, younger son of Darius II - so much that, in later life, he wrote a fictionalised biography of his ancestor Cyrus the Great ("The Education of Cyrus" or Cyropaedia). The Cyropaedia paints an idealised picture of Persian education and culture. As a young man he'd been recruited by Cyrus the younger to join his mainly Greek army whose mission (though not revealed at the start) was to overthrow Artaxerxes II and make Cyrus king. Xenophon wrote a detailed and exciting report of this expedition in the Anabasis ("Going inland" - often called in English "The March of the 10,000"). As an eyewitness account by someone sympathetic to Cyrus' ambitions it's quite different from most Greek writing about the Persians.
Plutarch was a Greek living in Greece during the Roman empire in the 3rd century AD (600 years later). He wrote biographies of famous Greeks and Romans - and then compared them to each other. (For example Alexander the Great and Julius Caesar). Only one biography is different. His Artaxerxes II is the only one not about a Greek or Roman. He had access to many writers now lost to us (including Ctesias, whom he despises), so it should be a most valuable source. Unfortunately though, after paying tribute to Xenophon's account of Cyrus' attempted coup, it becomes a typical piece of Greek "orientalism" - Plutarch seems mainly interested in describing the hideous tortures and bizarre methods of execution which Artaxerxes and his mother Parysatis inflicted on their family and friends. You may remember he was responsible for giving the label "philobarbaros" to Herodotus. A source for these tales may well have been Ctesias, who, according to the summary by Photius, included much gruesome detail in his account of he rebellion of Cyrus.
Cyrus' bid to become king 401 BC
One of the consequences of the long Peloponnesian war was that many young men had grown up thinking of war as a job. A very important change in how wars were fought was taking place. Formerly farmers became soldiers and fought for their city once the harvest was in; now there were men pleased to fight, for any cause, any time, any place, if the price was right: mercenaries.
Darius II and Parysatis had two sons. Artaxerxes, the elder, became king on his father's death. Cyrus, the younger brother, his mother's favorite, reckoned he'd a better claim, because he'd been born while his father was king. He had helped Sparta win the Peloponnesian War, and knew the Greeks well, especially the Spartans. He had been planning to challenge his brother for some time.
Cyrus began recruiting an army of Greek mercenaries (later known as the 10,000) to fight it out with his brother. He pretended that they were needed to deal with some local rebels in the hills of Anatolia. When it eventually became clear what his real objective was, the mercenaries were furious, but with a pay-rise promised, they carried on.
Poster for "The Warriors", a film inspired by Xenophon's Anabasis
Xenophon's story of the long march into the heart of the Persian empire often sounds light-hearted, and even fun. However, at Cunaxa, near Babylon, after six months on the road, Cyrus' army met and fought with his brother's. The Greeks won, but Cyrus was killed. His brother later claimed he'd killed him himself - and had all witnesses horribly put to death (according to Plutarch).
The whole point of the expedition was lost, and the Greeks had no one to pay them. Tissaphernes (him again) invited their leaders to a conference, and had them all killed. The soldiers now debated what they saw as their choice: settle down in Persia, marrying Persian wives and living a much more comfortable life than they would have done at home, or try to make it back to Greece somehow.
The Greeks, accustomed to a tough life in their own country, chose to head for home. Xenophon himself emerged as a leader at this point, and the army decided not to retrace their steps, but to move north, through Armenia and Kurdistan, and try to reach the Black Sea, where they might find ships to take them home. It was a hard and terrible journey. Eventually:
The local ruler sent a guide for the Greeks. When he arrived, he told them he would take them to a place from where they could see the sea. And so he guided them. On the fifth day they reached the mountain. When those in front got to the top and saw the sea, a great noise erupted. Xenophon and the rear-guard thought the enemy were attacking the front of the column. But when the noise grew louder, with men constantly running towards the men who were shouting, it occurred to Xenophon that it was something more. Getting on his horse, and rousing the cavalry, he rode forward towards the sound. And soon they could hear the soldiers shouting "Thalatta, thalatta!" and congratulating each other.Xenophon Anabasis 4.7.24"
The Zigana Pass, where the modern road crosses the mountains before descending to Trabzon (Trebizond/Trapezus) on the Black Sea. Unfortunately the sea is not visible from here: Xenophon must have been much higher. Photo AMW.
Artaxerxes in control
There's no evidence for much Persian support for Cyrus. Artaxerxes consolidated his position, and gave Cyrus' command in the west of the empire, and his daughter in marriage, as rewards to Tissaphernes. Why hadn't he tried to stop Cyrus before he got to Babylon? Probably because once again Egypt was trying to break free from Persia - dealing with Egypt would have been a priority. It seems that Egypt was lost (399 BC), at least temporarily, and that there were efforts to recapture it over the next 20 years.
At Susa this inscription has been found (in three languages)
Artaxerxes the Great King, king of kings (etc etc - we get the idea by now.) ...proclaims: this apadana Darius my great-great-grandfather built; afterwards in the time of Artaxerxes my grandfather it was burnt. Then by the favour of Ahura Mazda, Anahita and Mithra, I built this apadana. May Ahura Mazda, Anahita and Mithra protect me from all evil...
Artaxerxes seems to have encouraged the worship of Anahita especially. Berossus mentions statues of her being set up in the main cities of the empire, from Sardis to Bactria: this would appear to be Greek influence, as according to Herodotus earlier Persian religion needed neither statues nor temples. The first actual fire temples probably date from the time of Artaxerxes II. Perhaps it was time to acknowledge what the enemies had in common...