|Map||Basic Data||Planetary Image|
|Population:||None[3b], formerly billions|
|Affiliation:||Unknown[3b], formerly Imperium|
Urthwart was a benighted Imperium world that lay on the edge of the Eye of Terror, and its population lived beneath its surface in planetary shelters. It was invaded multiple times by the forces of Chaos.
During the 1st Black Crusade, it was invaded by the forces of the Despoiler and Cadian forces, aided by the Imperial Fists Chapter's 4th and 5th Companies, defended against a Chaos onslaught led by the first Defilers. After four days of vicious combat however, the Chaos forces were forced to retreat. It would later be invaded by the Black Legion again, in what became known as the Second Scouring of Urthwart, but the White Scars Chapter successfully came to the world's aid.
Millennia later, in the aftermath of an engagement with a raiding party of Night Lords, led by the vicious Tarraq Darkblood[3a], Cadia's High Command dispatched a expeditionary force to Urthwart. Composed of units of highly trained Kasrkin[3b] and Tempestus Scions, they were charged with finding some kind of indication of where the first blow of the Despoiler's next Black Crusade would fall. They did not know however, that Urthwart's System had been invaded by the dreaded Nurgle vessel Plagueclaw, which spread pestilence wherever it went.[3a]
As a result, when the Guardsmen breached the world's primary planetary shelters, they were greeted by a billion Plague Zombies. The undead soon fell upon the Guardsmen and as they fought for their lives, they became stranded when a Chaos fleet suddenly appeared and destroyed the expedition force's transports. Afterwards the 13th Black Crusade fully began and Urthwart was later destroyed by the Despoiler's Planet Killer.[3b]
- 1: Codex: Astra Militarum (8th Edition), pg. 32 — Heroes Beyond Number: First Blood
- 2: Index Chaotica: Defilers
- 3: Codex: Eye of Terror (3rd Edition)
- 4: Warhammer 40,000 4th Edition Rulebook, pg. 169