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
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, Dark Angels, 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. Noblebright, HERESY, 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 grimdark, and the leader of the Chaos Astartes just fled the fuck out of the planet and hide into an asteroid base. FAIL.

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