Captain Jehnnus Ardias of the Ultramarines Third Company, led the Third Company against the Tau but later negotiated a ceasefire with them when Governor Severus aligned himself with the daemon Tarkh'ax and the Word Bearers.[1a]
Ardias forced an override in the communications of a Tau Fire Warrior named La'Kais and guided him against the Word Bearers and subsequently helped Kais by holding of Tarkh'ax until Kais destroyed the daemon.[1b]
To honour a battle honour won by his company in the First Tyrannic War, fighting hive fleet Behemoth, Captain Ardias worked his company colours into his personal heraldry.[2]
He also commanded Strike Force Ardias in Joran VI Retaliation Force[3] in 745.M41[5] where Ultramarines fought with the T'au Empire[5] and traitor infantry.[4a] His army was deployed on the Strike Cruiser Fist of Ultramar.[4b] The expedition didn't go well and Ardias was killed shortly before the whole force was withdrawn.[5]
