23rd Hajada Erthguard
Most of Terra's defenses were taken by the Crusade and this left the Erthguard stretched thin against the many threats that emerged on the Throne World. This included the numerous Splintered Chaos Cults, one of which later seized control of Terra's Gorgantha subsector. Due to its importance, the Erthguard was sent to destroy the Cult, but they were repelled and forced to retreat into one of the subsector's large buildings. It was only with the arrival of the Adeptus Custodes forces led by Shield-Captain Valerian, that the Cult was destroyed and its leader Laxlan Skreto captured. With the Cult's forces shattered, the Erthguard was then able to reclaim the Gorgantha subsector and restore order there.
- 1: Watchers of the Throne: The Regent's Shadow (Novel), Chapter 5 - Valerian