Extermination of the Haimon Cluster

The Extermination of the Haimon Cluster was an Imperial castigation campaign carried out by the Ordo Angelus Space Marine Chapter against the citizens of the Haimon Cluster after they were found to have fallen to the corrupting influence of the Ruinous Powers.

History
During the second decade of their Crusade, the Ordo Angelus encountered the worlds of the Haimon Cluster located near the galactic-southwest reaches of the Segmentum Pacificus. They found the worlds of this forgotten region had fallen fully to the corrupting influence of the Dark Gods, held enthralled by the inhuman will of a foul Daemon Prince of Tzeentch. Pronouncing judgement against the people of the Haimon Cluster, the Ordo Angelus quickly mobilised and brought swift and bloody retribution to the worlds of the sector, fighting a long and bloody campaign that culminated in the near-total destruction of both forces. During this campaign, the Ordo Angelus were merciless in scouring the Chaos-corrupted worlds which had embraced the false teachings of Chaos cultists, putting all eight worlds to the sword and subjecting them to the supreme sanction of Exterminatus to ensure no remnant of Chaos remained.