|Colours||Unknown, but presumably red|
The Red Seraphs are another Space Marine Chapter of which little is known, like most Astartes Praeses chapters. They've mainly been mentioned in the Imperial Armour books, getting most attention in the Orphean War book. Considering their name, nobody would be surprised if they were another Blood Angels successor chapter.
- Dark Marches Crusade (610-760.M36): Three companies take part in the crusade, helping the Imperium claim 600 worlds and establish several new sectors.
- Aegisine Crusade (M39): Chapter takes part in the Black Templars crusade and picks up their Iron Cyclone Drop Pod manouver.
- Battle of the Gorgon Deeps (761.M39): Alongside the Revilers they help Battlefleet Orpheus destroy an Ork invasion force.
- Magdellan Prime Civil War (143-151.M41): Part of the relief force alongside Sons of the Kraken and Fire Angels to help the Sisters of Battle, they arrive just as the Sisters launch a counter-attack on the Chaos cultists.
- Orphean War (991.M41 - Present): Entire chapter moblizies to fight the Maynarkh Dynasty.