Geonide Crusade

Banner of the Geonide Crusade

During the Geonide Crusade the Black Templars were called upon to help the Inquisition retrieve vital information and artifacts.

The planet Geonide housed an Imperial research facility where member of the Adeptus Mechanicus worked on projects for the Imperial Navy, like new propulsion drives and laser technologies. The research involves classified artefacts and relics, bringing with it the risk of digging in to heretical subjects.
Without warning, Geonide had to face open rebellion in its cities, taking a heavy toll on the population and the research facilities.

It was discovered that a group of latent psykers 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 population of Geonide had fallen to Chaos and formed an army, together with 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 Exterminatus, the Black Templars were dispatched to retrieve valuable artefacts, research documents and Imperial personnel that were not tainted by chaos.

Sources

• Black Templars Crusades, Games Workshop UK