Daemon War

The Daemon War was a joint-castigation campaign conducted by both the Carbon Fists Space Marine Chapter and the Inquisition against a series of Daemon-infested worlds in an unrecorded system. Though the Imperial forces eventually emerged victorious, the Carbon Fists paid a heavy price, losing four whole companies and half of their fallen's gene-seed.

History
The Carbon Fists, alongside the the Inquisition's daemon-hunting Ordo Malleus, fought upon a series of worlds taken by hordes of Khornate daemons. The Chapter aided in the banishing of daemons by taking down shrines and eliminating high higher ranking daemons commanding the hordes. The battle was very brutal for the chapter. Losing four whole companies, half of which never got their gene-seed extracted