Hellpurge

The so-called Hellpurge was the Chaos castigation campaign conducted by the Ordinators Space Marine Chapter as their trial by fire. Dispatched into the hellish realms of the infamous warp rift known as the Eye of Terror, the Ordinators helped to cleanse a half dozen daemon worlds in multiple systems under the watchful eyes of their mentors, the Exorcists.

History
The first three provisional companies of the chapter are dispatched to the Eye of Terror for the chapter's trial by fire. Over the course of 19 years, six Daemon Worlds in four systems are cleansed of their foul Neverborn inhabitants by less than 300 newly-minted Ordinators and their Exorcist mentors.