Seleukid-Atropatene War

The Seleukid-Atropatene War was a conflict between the Seleukid Empire and Atropatene.

The Atropatenean army, preoccupied with war against Iberia, offered little resistance in their eastern domains. Seleukos penetrated deeply into Atropatene, sacking sacking Miyana in december, before meeting the Atropatene army in the inconclusive battle of Arvandj. Following this engagement Seleukos withdrew to Shiram to allow his army to be resupplied. During this period Seleukos contracted diptheria. Undetered, and severely ill from diptheria, he pursued the army Oxyartes Atropatid, taking Ganzak on the way. However Oxyartes proved to be elusive and not easy to pin down, resulting in another inconclusive battle at Shaapa.

Unable to pin down the highly mobile forces under Oxyartes Atropatid, while suffering continuous harresment from them, Seleukos came to terms with Datames, who was, despite his success in the field, forced to submit to Seleukos as a highly autonomous satrap.

Armenian Involvement
Seeing the weakend state of Atropatene following their war with Albania and the Seleukid invasion, king Orontes III launched his own invasion of Atropatene. His forces suffered a significant defeat at Mediana.