Syvarik Gestadt

The Syvarik Gestadt was an Imperial xenocidal purgation campaign fought by detachments of the Jonmarines Space Marine Chapter against the Syvarik, a minor xenos species. This conflict was a part of the much larger Reconstruction Wars in the Chapter's history.

History
Only a few months before the Mythradates XVI encounter with the Drakken Harbingers, Taskforce Hallic, comprising the Second and Ninth companies accompanied by elements of the First, led by First Captain Praedus Hallic, arrive on the airless, uninhabited world of Ctesophan XI following reports of anomalous readings detected by Ordo Xenos probes in the area. While Praedus expects necron activity, the Taskforce is met by an entirely different threat, namely the Syvarik Gestadt, an invertebrate species that resembles ancient Terra’s jellyfish, albeit on a massive size and in considerable numbers, some able to manifest psychic powers. A large portion of the Syvarik Gestadt are wiped out at the ‘Battle’ of the Cteson Wastes, where a large ‘Gestadt’ is wiped out by the Taskforce’s combined firepower, but Praedus orders a brief orbital barrage afterward to ensure some form of cull of the Syvarik.