Fortress World

Galaxy Portal Planets

This article is about the Imperial planet classification; for the Artificial Constructs, see Fortress Worlds (Segmentum Pacificus).

With the Imperium in a constant state of war, some worlds are designated as Fortress worlds to act as bastions against the enemies of the God-Emperor. You are part of that defence, keeping the evil outside the gates from breaking through. This has made you part of the glory of the Imperium's mighty forces of war.^[1]

A Fortress World is a category of Imperial planet where the entire populace is immersed in warfare. They are created as bastions against some threat. The most well known fortress world was Cadia, which was guarding the Cadian Gate at the entrance to the Eye of Terror.^{[Needs Citation]} In bureaucratic matters classifications of Research Stations and fortress worlds overlap, both being ρ-class.^[2a]

Since the establishment of the Indomitus Crusade, many Fortress Worlds are being converted into Hub-Fortresses to support the war effort.^[3]

Notable Fortress Worlds

Planet name	Segmentum	Sector	Subsector	System	Population	Affiliation	Notes
Almarit (former)	Unknown	Unknown	Unknown	Unknown	Unknown	Chaos (Khorne), former Imperium	Now — Daemon World, also former Shrine World
Beta-Garmon II	Segmentum Solar	Beta-Garmon Cluster	Unknown	Alpha-Garmon System	Unknown	Imperium
Boros Prime	Segmentum Obscurus	Unknown	Boros Gate	Boros System	Unknown	Imperium
Brigannion Four	Segmentum Obscurus	Eye of Terror	Unknown	Unknown	Unknown	Chaos (Iron Warriors)
Brigantia III (former)	Unknown	Unknown	Unknown	Unknown	Unknown	Former — Imperium	Now - destroyed
Burjan's World	Unknown	Mitre Gulf	Unknown	Unknown	Unknown	Chaos (Iron Warriors)
Cadia	Segmentum Obscurus	Cadian Sector	Cadian Subsector	Cadian System	850,000,000	Imperium	Now - Destroyed
Castellax (former)	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown, Former — Chaos (Iron Warriors)
Celthenn[2b]	Ultima Segmentum	Unknown	Unknown	Bane's Landing System	Unknown	Imperium
Coronis Agathon	Segmentum Obscurus	Unknown	Unknown	Unknown	120,000,000,000	Imperium
Forgefane (former)	Segmentum Tempestus	Unknown	Unknown	Unknown	Unknown	Former Chaos (Iron Warriors)	Now — Dead World
Jago	Segmentum Pacificus	Sabbat Worlds	Unknown	Unknown	Unknown	Imperium
Kasr Partox	Segmentum Obscurus	Cadian Sector	Cadian Subsector	Cadian System	Unknown	Chaos
Longhallow	Unknown	Unknown	Unknown	Unknown	Unknown	Imperium
Lutoris Epsilon	Unknown	Unknown	Unknown	Unknown	Unknown	Chaos, former — Imperium
Malodrax (former)	Unknown	Unknown	Unknown	Unknown	Unknown	Formerly — Chaos (Iron Warriors)	Now destroyed
Medrengard	Segmentum Obscurus	Eye of Terror	Unknown	Unknown	Unknown	Chaos (Iron Warriors)	Also — Daemon World
Molech	Segmentum Solar	Unknown	Unknown	Unknown	Unknown	Imperium	Also — Knight World (House Devine)
Morlond	Segmentum Pacificus	Sabbat Worlds	Unknown	Unknown	Unknown	Imperium
Obdurus	Unknown	Unknown	Unknown	Unknown	Unknown	Former Heretic world.	Current status unknown.
Orask	Ultima Segmentum	Unknown	Unknown	Unknown	117 Million	Imperium. Also Frontier World
Refusal	Unknown	Unknown	Unknown	Unknown	Unknown	Imperium
Sangua Terra	Segmentum Obscurus	Unknown	Gorandahl Sub-Sector	Sanguis System	Unknown	Imperium	Lynch-pin of the Sanctus Wall and southern end of the Nachmund Gauntlet[4]
Sebastus IV	Unknown	Unknown	Unknown	Unknown	Unknown	Imperium, former — Iron Warriors
Spite	Ultima Segmentum	Jericho Reach	Canis Salient	Unknown	Unknown	Imperium
Sybari (former)	Unknown	Unknown	Unknown	Unknown	Unknown	Former Imperium	Now — Dead World
Taira-Shodan	Unknown	Unknown	Unknown	Unknown	Unknown	Imperium
Talasa Prime	Ultima Segmentum	Unknown	Unknown	Unknown	Unknown	Imperium (Inquisition)
Vas'talos (former — Prefectia)	Ultima Segmentum	Damocles Gulf	Unknown	Dovar System	Unknown	Imperium, conquered by Tau	Now — Tau World

Sources

• 1: Rogue Trader: Into the Storm, ^{[Needs Citation]}
• 2: Warhammer 40,000 8th Edition Rulebook
  • 2a: pg. 33
  • 2b: pg. 166 — The Blood Crusade
• 3: White Dwarf November 2019 pg.47-48
• 4: War Zone Nachmund: Rift War pgs. 24-25