Axon Crusade

The Axon Crusade was a xenocidal purgation crusade carried out by the Carbon Fists Space Marine Chapter in the Ultima Segmentum, to help cleanse it of xenos taint following a series of deadly terrorist strikes throughout the region. This particular campaign lasted for around two centuries until the Carbon Fists were able to track every last sentient species responsible. Only then did they withdraw from the Crusade, to campaign somewhere else they were needed.

History
The Chapter partook in the Axon Crusade. A crusade created to eradicate enemies of the Imperium in Ultima Segmentum after a series of terrorist strikes done by other sentient species. The 200 year old crusade let the Chapter through a series of frontal assaults and brutal strikes against the attackers who surrendered. Even so the Chapter continued until every last individual was hunted down and killed as payback.