User:Auroch/VH/Galaxy

From 1d4chan

The vast Galaxy of the Milky Way was the battleground of the Great Crusade and the Heresy War. Most of the galaxy is dominated by the Imperium of Mankind as reorganized under the Imperial Vestige, in four great Segmentums, with the far galactic east being outside its reach and designated Segmentum Nihilus.

Milky Way galaxy.jpg

Segmentum Solar[edit]

Great Crusade era[edit]

Smallest of the Segmenta, it comprised Terra and its hinterland; the Sol System sat at its heart and the other four were arrayed around it.

Legiones Astartes based in this Segmentum

Nominally, the Luna Wolves, from Horus's home world of Cthonia

Other Imperials in this Segmentum

Reconquest era[edit]

From Terra toward the east. After the Custodianship, Sector Solar became near the western border of the Segmentum, and the eastern border moved up against the impenetrable galactic core.

Notable features

Prospero, home world of Magnus though now a Dead World, sits within Segmentum Solar

Segmentum Obscurus[edit]

Great Crusade era[edit]

Segmentum Obscurus sat to the galactic north of Solar, from Chinchare in the west to Valhalla in the east.

Legiones Astartes based in this Segmentum

Dark Angelss from Lion El'Jonson's homeworld of Caliban, just south of the Halo Stars and the Rangda.

Space Wolvess from Leman Russ's homeworld of Fenris, on the eastern fringe of the segmentum.

Other Imperials in this Segmentum

Segmentum Fortress: Forge World Cypra Mundi

Reconquest era[edit]

After the segmental reorganization, the western border moved east to the Cypra Mundi system, and its de jure eastern border to slightly west of Baal. However, its eastern border with Segmentum Nihilus is the most heavily contested space in the galaxy, so the de facto border is constantly shifting. However, it rarely moves much further west than Valhalla or closer to the Eye of Terror than Sable.

Segmentum Fortress: Lucius Sub-sector, not the same system as the Forge World but very close.

Notable features

- The Storm of Wrath, a recurring severe Warp Storm in the general vicinity of Valhalla. It lasts for a decade or more, then fades before reappearing anywhere from twenty to two hundred years later, always in the same general vicinity but sometimes moving two whole sectors.

- Necron Mephrit dynasty

Segmentum Pacificus[edit]

Great Crusade era[edit]

Second-smallest and least-populous segmentum, it started at the western edge of Segmentum Solar between Hydraphur in the north and Gehenna in the south, and stretched west out to the edges of the Astronomican's light.

Legiones Astartes based in this Segmentum

The Hydra had an usually strong presence in this Segmentum, perhaps merely because no living primarch was found in it.

Other Imperials in this Segmentum

Segmentum Fortress: Forge World Hydraphur

Reconquest era[edit]

The eastern border moved inward and now encompasses the Forge Worlds of Voss, Phaeton, and Graia. The northern border passes slightly west of Forge World Cypra Mundi, then east of Hellion and Opuscalus Noctis.

Segmentum Fortress: Still Forge World Hydraphur (now more centrally located)

Notable features

Nuceria, home world of the primarch who was known as The Fettered, sits in the far northwest of the segmentum.

Segmentum Tempestus[edit]

Great Crusade era[edit]

It sat south of Segmentum Solar, starting from the Taras Division and stretching past Tallarn to Antagonis and the west edge of the Hungering Gyre. In the west, its border passed near Krieg and Chiros.

Legiones Astartes based in this Segmentum

Raven Guard from Corvus Corax's home world of Deliverance

Before Rogal Dorn was named Praetorian of Terra, the Imperial Fists were based on Inwit

The Death Guard, from Mortarion's home world of Barbarus

After Perturabo was named Vigilus Marchensis, the Iron Sages, from the Iron Line

Other Imperials in this Segmentum

Reconquest era[edit]

The western border now passes due south near Graia, with Solstice one of the westernmost systems. To the east, the nominal border passes southwest from Olympia, east of Chogoris and the former location of Nocturne, leaving the galaxy just east of the Hungering Gyre. The practical border is the Iron Line, which has its northern terminus at the Maelstrom and, like the western border, heads nearly straight south, passing between Chemos and Chogoris and very near Nocturne before ending at the west side of the Gyre.

Notable features

Chemos, former home of Fulgrim and his Emperor's Children, now a Dead World, sits to the north of Tempestus

Ultima Segmentum[edit]

Great Crusade era[edit]

The Ultima Segmentum began at the eastern edge of Segmentum Solar, on an arc passing near Elysia, Prospero, and Nikea, before extending outwards and east past the galactic core to Ultramar in the southeast and the Ghoul Stars in the northeast. It was abolished during the Custodianship, with the western half being divided into its neighboring segmenta and the eastern half redesignated Segmentum Nihilus, i.e. outside Imperial control.

Legiones Astartes based in this Segmentum

The Reforged, from Ferrus Manus's home world of Medusa

The Blood Angels, from Sanguinius's home world of Baal

The Night Lords, initially from Night Haunter's home world of Nostramo, later fleet-based, as directed by the primarch at the same time as he resumed use of the name Konrad Curze.

The Chained Hounds, from their muster world of Bodt, just coreward of Chondax

The Iron Sages, from Perturabo's home world of Olympia, until he was given the duty of Vigilus Marchensis.

The Thousand Sons, from Magnus's home world of Prospero

The Emperor's Children, from Fulgrim's home world of Chemos

The White Scars, from Jaghatai Khan's home world of Chogoris, a.k.a. Mundus Planus

The Word Bearers, from Lorgar's home world of Colchis

The Salamanders, from Vulkan's home world of Nocturne

The Ultramarines, from Roboute Guilliman's home polity of Ultramar

Other Imperials in this Segmentum

Segmentum Fortress: Kar Duniash

Segmentum Nihilus[edit]

Reconquest era[edit]

Segmentum Nihilus is practically defined as the wide band to the galactic east of the core, from Bale, Neverlight, and the Evermaw north through the Thirteen Realms and the Dominion of Storms to Honourum, Angelis, and the Eye of Terror. The technical definition is defined in relation to a certain band of angles measured from the galactic core, but it is effectively the same. It is the area which it is infeasible to protect from the depredations of the forces of Chaos, where ground cannot be effectively held and can only be contested back and forth.

Segmentum Fortress: The Phalanx, headquarters of the Obsidian Fists, who have fought a perpetual crusade in Segmentum Nihilus since their founding.

Notable features

The Eye of Terror, to the galactic northeast of Baal at a radius from the core about two and a half times that of Baal. The largest Warp Rift in the galaxy and second-largest Warp Storm, it predates the Great Crusade and now is home to three full traitor legions and portions of three more.

The Evermaw, created as the lasting effect of the Ruinstorm ritual which engulfed Ultramar in the largest Warp Storm ever seen. It shrank somewhat in the decades after the Heresy War and created a true Warp Rift at its heart, to which the Ultramarines and Word Bearers retreated after their defeat; this smaller but more intense version was named the Evermaw by the astartes of the Iron Line, upon realizing it was not going to dissipate further. Since a century after its shrinking began, however, both storm and rift have been growing, slowly but steadily; they passed the peak extent of the Ruinstorm in M35 and seem to be adding a roughly constant amount of volume per century.

The Signus Accord: A bastion of hope between hells, the Signus Accord is a cross-species alliance, principally between the T'au and the former Forge World of Triplex Phall. Far beyond the ability of the Imperium to protect them or even support them, Triplex Phall, already self-sufficient by necessity, sought to build a more durable, secure region of space which could withstand raids without intervention by the Obsidian Fists or other crusading astartes orders. The Warp-resistant T'au, a young but rapidly-developing race, made contact with them in late M33, having achieved spaceflight in the preceding two centuries and slowly expanding outward from their home world near Konig Secundus. They sought to convert the Mechanicum magoi to their philosophy of the Greater Good, but their devotion to the Omnissiah, though very much heterodox by this time, remained far too strong. They did, however, share knowledge, with both sides receiving technical knowledge and Triplex freely sharing what they knew of Chaos, the dangers of the galaxy, and particularly the heretic astartes raiders. Sobered T'au sought and found corroboration of their claims, and their Ethereals made the decision to make solid alliances even with those who declined to join the Greater Good, a principle they named "Nont'shas Ko'vash", literally "Shadow-Time's Worthy Cause" but usually translated into Low Gothic as "the Desperate Times Principle". They, their client races, and Triplex Phall signed an accord, to come to each other's aid, share technology as much as was feasible, and pool information and agents in the investigation and expunging of Chaos taint from their worlds. This accord with xenos is frowned on by many of the loyal astartes who operate in Segmentum Nihilus, but they recognize that Triplex Phall would have fallen long ago without it, so other than assisting with the smuggling of Inquisitives and Imperial Faith priests onto the human-peopled worlds of the Signus Accord, they have left the T'au and their small empire alone.