Ariarathes IX of Cappadocia vs Demetrius I Soter

Ariarathes IX was installed as king of Cappadocia by his father, Mithridates VI of Pontus, after the murder of the previous king. He served as a puppet ruler, with real power exercised by Pontic officials.

Ariarathes IX was expelled from Cappadocia by a rebellion of the local nobility, who opposed Pontic control. The rebels appealed to Rome for a new king, leading to the appointment of Ariobarzanes I.

Mithridates VI restored Ariarathes IX to the Cappadocian throne after expelling the Roman-appointed king Ariobarzanes I. This act was part of Mithridates' broader campaign to challenge Roman influence in Anatolia.

Ariarathes IX was finally expelled from Cappadocia after the First Mithridatic War ended in Roman victory. He was killed shortly after, ending the Pontic puppet regime in Cappadocia.

Demetrius I Soter escaped from Rome, where he had been held as a hostage, and returned to Syria. He overthrew the regent Lysias and the young king Antiochus V, claiming the Seleucid throne. His return was supported by the Roman Senate.

Demetrius I sent an army under General Nicanor to suppress the Maccabean Revolt in Judea. Nicanor was defeated and killed at the Battle of Adasa by Judas Maccabeus. This victory solidified Maccabean control over Judea.

Demetrius I was killed in battle against the forces of Alexander Balas, a rival claimant to the Seleucid throne supported by Rome and Pergamon. His death ended his reign and plunged the Seleucid Empire into further civil war.