Battle of the Arius

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Battle of the Arius
Part of Antiochus's Bactrian Campaign
The Arius (Hari) river
Date 208 BC Location Arius River (Modern day Hari River, Afghanistan) Result Seleucid victory
Belligerents
Seleucid Empire	Greco-Bactrian Kingdom
Commanders and leaders
Antiochus III the Great	Euthydemus I
Strength
2,000 Horsemen	10,000 Cataphracts
Casualties and losses
750–1,250 horsemen	2,000–2,500 Cataphracts

The Battle of the Arius was an engagement that was fought in 208 BC between the Seleucid Empire and the Greco-Bactrian Kingdom. The Seleucids were led by Antiochus III the Great, who launched an invasion of Bactria to recover his ancestor's past dominions. He would go on to be victorious in this battle, and would later go on to besiege the Bactrians at their capital of Bactra for three years.