Orvari 13th
The Orvari 13th are a regiment of the Astra Militarum.[1]
During the Charadon Campaign, the Orvari 13th were among the Imperial defenders of the Brezantius System. At one point they were deployed on Kapston alongside a number of other regiments to combat a Chaos Space Marine coalition under Gharax the Shatterer.[1]