Battle of Ancyra
|Battle of Ancyra|
Kingdom of Pontus
|Commanders and leaders|
|Seleucus II Callinicus||
Mithridates II of Pontus
|Casualties and losses|
|heavy, possibly 20,000||Unknown, low|
The Battle of Ancyra was fought in ca. 237 BC between the Seleucid King Seleucus II Callinicus and his brother Prince Antiochus Hierax. Civil war had raged in the Seleucid Empire since 244 BC, when Queen Laodice I had supported her son Antiochus in a rebellion against Seleucus. Antiochus fought to make his own kingdom in Anatolia. He was able to take advantage of his brothers distraction and defeat at the hands of Ptolemy III in the Third Syrian War. By 239 BC Seleucus had made peace with Ptolemy and having rebuilt his army, invaded Antatolia.
After the war had lasted two years or so, during which we have no information on its progress, Seleucus was defeated in a greta battle against the united forces of Mithridates II of Pontus, Hierax and the Galatians near Ancyra, in roughly 237. Seleucus was barely able to escape with his life, but lost some 20,000 of his soldiers. 
- Overtoom, "The Power-Transition Crisis of the 240s BCE and the Creation of the Parthian State," The International History Review Volume 38, 2016 - Issue 5. Pages 984-1013. 
- Grainger, "The rise of the Seleucid Empire," Page 195.
- Jaques 2007, p. 50
- Jaques, Tony (2007). Dictionary of Battles and Sieges. Greenwood Publishing Group. ISBN 978-0-313-33537-2.
- Grainger, John.D (2014). The Rise of the Seleucid Empire,. Pen & Sword. ISBN 978-1-78303-053-8.