|Defender||Genestealers, Human Chaos Cultists|
The Thetus Crusade was a Crusade the Black Templars Space Marine Chapter declared against the Imperial world of Nevaria II to deal with a small but dangerous Chaos Cult. But after further investigations by the xenos-hunting Deathwatch Chapter, the threat proved to more dire than originally believed. It turned out that a Genestealer Broodlord was behind the cult. This culminated in a thorough extermination and cleansing of the world of Nevaria II xenos taint by the Black Templars and Deathwatch Chapters.
On the planet of Nevaria II the Black Templars were called on to deal with a small but highly dangerous heretical cult. As dangerous as the cult was, the real influence behind it was only discovered after a costly covert strike by the Deathwatch Chapter, the Chamber Militant of the Ordo Xenos. They revealed that a Genestealer Broodlord was behind the cult. The nefarious influence of the Genestealer hybrids had spread much farther than anticipated. The Black Templars took up the challenge and cleansed the genestealer taint from the bottom up, fighting brutal and costly battles in cramped corridors and forgotten cities in the dark depths of the Hive, eventually cleansing the hive and Nevaria II of the xenos contamination.
- White Dwarf 312 (UK), "Righteous Victories" by Graham McNeill