Badab War

In [M41.901], as a result of Lufgt Huron's apparent mental destabilisation, the Master of the Tiger Claws and Lord of Badab attacked and destroyed an Imperial investigation fleet as it entered orbit around Badab. Huron's action can be understood with the benefit of hindsight. The Adeptus Mechanicus had long complained of the Tiger Claws' tardiness in submitting gene-seed for routine analysis, whilst the chapter had amassed a huge debt in planetary tithes stretching back over a hundred and fifty years. And when the Imperium moved against its wayward chapter, a full scale rebellion was initiated, the most serious of its kind since the end of the Fourth Quadrant Rebellion in [M41.780].

The Tyrant of Badab, as Commander Huron is known in Imperial histories, was a power-hungry and ambitious individual who should never have risen to power within a Marine Chapter. He was plainly a dangerous individual, able in many respects but lacking the absolute dedication to humanity vital in a Lord of the Imperium. It will never be known for sure, but current hypotheses suggest that the Commander was either an alien shapechanger, or otherwise subject to alien domination of a most unnatural kind. A sudden and unexpected manifestation of psychic powers may lie at the heart of the matter.

By [M41.903] three other chapters, the Mantis Warriors, Executioners and Lamenters had joined the rebellion. Imperial shipping was attacked, and a ship belonging to the Fire Hawks Chapter was captured by the Mantis Warriors in [M41.904]. The Fire Hawks immediately retaliated, and soon five whole chapters were involved in the fighting. The Emperor recalled the Marines Errant from the Eastern Fringes, but they quickly found themselves fully occupied protecting Imperial ships in transit.

In [M41.906] two more loyal Marine units, the Red Scorpions and the Minotaurs, had been brought in, and the threat to Imperial shipping was more or less quashed. In [M41.907] the Red Scorpions and Fire Hawks were recalled to their normal service duties in the galactic east, and two more chapters, the Novamarines and Howling Griffons were committed to space-lane duties.

Meanwhile, the Star Phantoms began the task of besieging Badab whilst two other chapters were drafted in to investigate the worlds occupied by the Mantis Warriors and Executioners. The Lamenters were caught in an ambush by the Minotaurs in [M41.908] and eventually surrendered after bloody ship-to-ship fighting. This came as a great blow to the Tyrant, and the rest of the war consisted almost entirely of close sieges. The uprising came to an end in [M41.912] with the fall of Badab and final defeat of the Tiger Claws. Before the war was over, The Exorcists, Fire Angels, Salamanders, Space Sharks and Sons of Medusa all became involved for short periods of time; chapters replacing other chapters as pressures elsewhere necessitated their re-deployment.

With the rebellion over, The Mantis Legion, Executioners and Lamenters were granted the Emperor's forgiveness, subject to undertaking a hundred year crusade. The homeworlds of the Mantis Legion and Executioners were forfeited to the Space Sharks and Star Phantoms for their part in the war. The other legions received salvage rights to spacecraft and a proportion of the booty. The Tiger Claws were all but destroyed. Only a contingent of about two hunded fought their way through the Exorcists' blockade and escaped into deep space. They have not been heard of since. Of the fate of Imperial Commander Lufgt Huron, Master of the Tiger Claws and Tyrant of Badab, nothing is known.

Source

 * The Badab War by Rick Priestley (White Dwarf 101)