Angels Incarnadine

The Angels Incarnadine are a non-codex compliant successor of the Blood Angels. Reduced to only 300 members due to the betrayal of a former ally, they have taken to the stars in search of revenge or death in battle.

Chapter Culture
"Our lives began anew when our homeworld died- what sad, broken lives they became... They will end in victory, or in madness, alas that such a fate should befall us."

- Captain Hadriel Sharrantar

That changed after being betrayed- they abandoned Cro'ziha, destroyed their Fortess Monastery from orbit and took to the stars. While once a proud chapter that celebrated the deeds of their fallen and entombed their heroes they have become highly fatalistic seeking death in battle before The Black Rage can claim them but vowing to do as much good as they can before doing so.

Betrayal at Cro'ziha
in the year 500.M41 A plague swept through the jungles of their homeworld of Cro'ziha, killing thousands Unable to treat this disease alone, the Chapter's Apothecaries called upon Silas 46Sigma a Techpriest of the Magos Biologos for aid. 46Sigma's study of the disease, revealed that the plague was of their own making, it was highly mutated form of an otherwise harmless bacteria a Thunderhawk Pilot had introduced to Cro'ziha.

The Techpriest's study led him to obsession and his obsession led him to dismiss its victims and focus on the organism itself. He would stray further and further from his calling, and in so doing lead his subordinates astray, all falling to Nurgle.

He would betray them and the people of the world he was sent to help, spreading ever more deadly and destructive forms of the disease to the far reaches of the planet, eventually killing millions.

But this was not enough for the former techpriest- he grew bold enough to the Chapter to ransom with a biological weapon distilled from samples of the original bacteria and genetic samples stolen from their entombed Chapter Master.

They refused to submit and nearly 700 Astartes died when 46Sigma triggered his final weapon, modified Virus Bombs that stripped the planet of all life, and vanished.

Structure
While they were once a Codex compliant chapter, their losses have forced them to reorganize. Only three companies and three Captains remain- these three Captains have formed themselves into an informal council, that oversees the Chapter from their flagship, the Battle Barge  Alis est sanguis