During the '''Geonide Crusade''' , the [[Black Templars]] were called upon to help the [[Inquisition]] retrieve vital information and artifactsfrom Geonide.

The planet Geonide housed an [[Imperial]] research facility where member members of the [[Adeptus Mechanicus]] worked on projects for the [[Imperial Navy]], like such as new propulsion drives and laser technologies. The Their research involves involved classified artefacts and relics, bringing with it the ; there was a risk of digging in to researching heretical subjects. <br>Without Then, without warning, Geonide had to face faced open rebellion in its cities, taking a heavy toll on the population and the research facilities.

It was discovered that a group of latent [[psyker]]s were tainted by the unholy powers and lies of [[Chaos]]. They opened a rift in reality by using the energies of the [[Warp]]. Within a year , 75% of the Geonide's population of Geonide had fallen to Chaos and formed an army, together with Daemons supplemented by [[daemons]] and other warp-spawned creatures.

Normal methods for reclaiming the planet failed and the Inquisition called for an [[Exterminatus]]. However, before the execution of the Exterminatusworld was annihilated, the Black Templars were dispatched to retrieve valuable artefacts, research documents and Imperial personnel that were not tainted by chaosChaos.