Jarkian Retaliation

The Jarkian Retaliation was a xenocidal Imperial counter-offensive campaign that occurred in 986.M41, against the forces of both Craftworlds Ulthwé & Biel-Tan, which took place in the Jarkian Sector located near the galactic southern edge of the Ultima Segmentum that meets the Segmentum Solar.

History
The Novus Krakens intercepted reports of an ailing human colony on an unnamed planet in the galactic southern edge of the Ultima Segmentum near Segmentum Solar. The colony was beset by constant attacks by Aeldari from both craftworlds Ulthwé and Biel-Tan. The 3rd company was sent to assist the beleaguered colony. When they arrived, the chapter was met with the assistance of the Ordinators and Imperial Fists Space Marine Chapters. After a chain of successful conquests on the planet, the 3rd Company Kaptein was overlooking the installation of a forward outpost with his command staff, an Ordinators Techmarine, and an Imperial Fists veteran sergeant, when the Aeldari began a devastating offensive. With entire columns of Fire Prism Grav-Tanks, the Aeldari smashed through the armour of the Novus Krakens, Ordinators, and Imperial Fists Space Marines. The Ordinator's Techmarine led a valiant counter-offensive with Predator Tanks, but were smashed aside by the fury of the Fire Prisms. It was not long that the joint-Space Marine force was routing.

The Imperial Fists held their ground, preferring death in a Final Stand to allow the Ordinators and Novus Krakens to retreat. However, the Imperial Fists' legendary defense was smashed apart by the Aeldari armor columns, and soon the Novus Krakens 3rd Company Kaptein came face-to-face with the towering figure of the Avatar of Khaine that led the craftworld forces. Kaptein Haldenmar Jark fought the Avatar in Single Combat, and the Ordinators Techmarine led a suicidal charge to hold back the Fire Prisms advancing on the Kaptein, committing his life to death in a Melta Charge explosion that rocked the Fire Prisms and sent them reeling back enough for the Kaptein to slay the Godlike Avatar being before being torn apart by the weapons fire of recovered Fire Prisms and Wraithguard warriors.

The last remaining member of Jark's command staff, the Apothecary Magne Kelbrede rallied the remains of the 3rd Company and led numerous successful counter-offensives, discovering the numerous Webway Gates across the planet and destroying every last one. Assaulting the very last Webway Assembly proved more difficult, and with the assistance of the Captain of the Ordinators 4th Tactical Cohort Aegeus, and the timely intervention of Techmarine Francois Mancinus from the Revanchists Space Marine Chapter, the Aeldari were banished from the world. In honor of the sacrifice of Haldenmar Jark's sacrifice, the planet was officially named Jark in Imperial Records. Ever since, the Novus Krakens have visited occasionally to seek new recruits from its peoples.