Crimson Castellans

Crimson Castellans
Battle Cry Unknown
Founding Unknown
Successors of Unknown
Successor Chapters Unknown
Chapter Master Caroman
Homeworld Vorl Secunda (abandoned after being nommed by the tyranids).
Strength 0. Completely annihilated by Tyranids in the middle of civil war.
Specialty Devensive manouvers, trench fighting and all kinds of defensive warfare.
Allegiance Imperium of Man
Colours Red and Black

The Crimson Castellans were a loyalist chapter of Space Marines. During 995.M41, half of the chapter fell to the Ruinous Powers, starting a massive civil war. Finally surrounding the traitorous elements of the chapter on the planet of Sephrax. Just when the battle between the two astartes factions started to reach its climax, the planet was invaded by Hive Fleet Jormungandr. How both of these factions failed to detect that a massive hive fleet was on its way to the planet it's not certain, but what it is known is that both factions stopped fighting each other and allied against the tyranids. Maybe they remembered they were brothers despite their differences, despite the fact the Crimson Castellans were knowingly allying themselves with Chaos Pirates, maybe they both thought than not being eaten into oblivion was a priority before fighting each other to the death. Whatever the reason, they tried to push the tyranids back, but their weakened forces were no match for Hive Fleet Jormungandr, which just spammed raveners, mawlocs, trygons and other bioforms. The Crimson Castellans's Chapter Master was eaten alive while the rest of the chapter watched in horror, unable to help him, and the leader of the Chaos Astartes just fled the fuck out of the planet and hide into an asteroid base. Just in time for his asteroid to collide against a massive bio-ship, being eaten alive in the process.

After their fight against Jormungandr, the Crimson Castellans are considered extinct, with the few remaining survivors absorbed into other chapters.

Chapters of the Adeptus Astartes
First Founding (M29): Blood Angels - Dark Angels - Imperial Fists - Iron Hands - Raven Guard
Salamanders - Space Wolves - Ultramarines - White Scars
Second Founding (021.M31): Angels of Absolution - Angels Encarmine - Angels Porphyr - Angels of Redemption
Angels Sanguine - Angels of Vengeance - Angels Vermillion - Aurora Chapter - Black Consuls
Black Guard - Black Templars - Blood Drinkers - Brazen Claws - Crimson Fists - Destroyers
Doom Eagles - Eagle Warriors - Excoriators - Fists Exemplar - Flesh Tearers
Genesis Chapter - Inceptors - Iron Snakes - Libators - Lions Sable - Marauders - Mortifactors
Nemesis - Novamarines - Obsidian Glaives - Patriarchs of Ulixis - Praetors of Orpheus
Rampagers - Raptors - Red Talons - Revilers - Silver Eagles - Silver Skulls - Soul Drinkers
Storm Lords - White Consuls - Wolf Brothers
Third to Twelfth Founding
(M32-M35):
Astral Claws - Charnel Guard - Dark Paladins - Executioners - Flesh Eaters - Halo Brethren
Howling Griffons - Iron Knights - Mantis Warriors - Marines Malevolent - Night Swords
Sable Swords (initial) - Scythes of the Emperor - Space Sharks - Sons of Guilliman
Thirteenth Founding (M35): Death Spectres - Exorcists
Fourteenth to Twentieth Founding: Angels of Fire - Celebrants
Twenty-First Founding
(991.M35):
Black Dragons - Blood Gorgons - Fire Hawks
Flame Falcons - Lamenters - Minotaurs - Sons of Antaeus
Twenty-Second to
Twenty-Sixth Founding (M35-M41):
Angels of Vigilance - Celestial Lions - Dark Hunters - Disciples of Caliban - Emperor's Spears
Fire Angels - Imperial Harbingers - Iron Lords - Knights of the Raven - Marines Errant
Mentors - Fire Claws/Relictors - Star Phantoms - Steel Cobras - Subjugators
Ultima Founding
(999.M41):
Angels of Defiance - Blades of Vengeance - Castellans of the Rift - Fulminators
Knights Cerulean - Knights of the Chalice - Knights of Thunder - Necropolis Hawks
Nemesors - Praetors of Ultramar - Rift Stalkers - Silver Drakes - Silver Templars
Sons of the Phoenix - Storm Reapers - Umbral Knights - Unnumbered Sons
Valiant Blades - Void Tridents - Wolfspear
Unknown Founding: Absolvers - Accipiters - Adulators - Angel Guard - Angels Eradicant - Astral Knights
Blood Ravens - Blood Swords - Brothers Penitent - Crimson Castellans - Crimson Consuls
Crimson Scythes - Dark Hands - Dark Sons - Death Eagles - Fire Lords - Guardians of the Covenant
Graven Spectres - Hammers of Dorn - Harbingers - Hawk Lords - Invaders - Iron Talons - Jade Dragons
Knights of Blood - Knights Unyielding - Marines Exemplar - Night Watch - Rainbow Warriors
Reclaimers - Red Hunters - Red Scorpions - Sable Swords (refounded) - Solar Hawks
Sons of Orar - Star Dragons - Storm Giants - Storm Wardens - Valedictors - Viper Legion - Vorpal Swords
Unsanctioned Founding: Consecrators - Sons of Medusa - Steel Confessors
Others: Adeptus Custodes - Astartes Praeses - Deathwatch - Grey Knights