Brigannion Four is a Fortress World lying just outside the Eye of Terror, nicknamed the Planet of Steel. It is not a Daemon World, but its surface still writhes with the Daemonic energies of the Warp.
|Map||Basic Data||Planetary Image|
|Sector:||Eye of Terror|
|Affiliation:||Chaos (Iron Warriors)|
Brigannion Four was first conquered by the Night Lords during the Age of Apostasy. They performed a year-long ritual, sacrificing a great deal of the planet's population to the Gods of Chaos in exchange for unimaginably powerful spells of daemonic protection. Since then, several Traitor Legions have fought for control of Brigannion Four. It is claimed not only by the Night Lords, but also by the Black Legion, the Death Guard, the Sons of Hate, and the Brotherhood of Blood.
Currently, it is held by the Iron Warriors, ruled by Manneus Drath. They further enhanced the defensive capabilities, turning Brigannion Four into an outright vast fortress of corrupt magic and machines. So far, they have successfully repelled seventeen invasions by Imperial and Chaos forces alike, earning Brigannion Four the nickname Planet of Steel.