From Lexicanum

Map	Basic Data		Planetary Image
	Name:	Tartarus
	Segmentum:	Unknown
	Sector:	Unknown
	Subsector:	Unknown
	System:	Unknown
	Population:	N/A
	Affiliation:	None
	Class:	Destroyed
	Tithe Grade:	N/A

Tartarus was a planet besieged by Orks when Captain Gabriel Angelos, of the Blood Ravens Third Company, arrived. The Orks took most of the surrounding area, and with great effort, the Blood Ravens pushed them back. The planet had a dark history as an altar for the Blood God Khorne. Captain Angelos had to execute his own friend, Isador Akios, for turning to the forces of Chaos. The Eldar and Chaos were also on Tartarus, the Eldar to keep the avatar of Khorne sealed in an object called the Maledictum, and the forces of Chaos to release it. After Sindri Myr's death, Gabriel was pressed by Inquisitor Toth to destroy the Maledictum. Gabriel did so, and released the avatar of Khorne unto the universe.

End

Tartarus was destroyed in the same way Cyrene was. It was bombed with Cyclonic Torpedoes.

Sources

• Warhammer: Dawn of War - Real Time Strategy game by Relic Entertainment