The Blood Angels are one of the 20 First Founding Legions of the Space Marines and were originally the IX Legion before the Second Founding broke the Legiones Astartes up into separate Chapters of 1000 Space Marines. They are well-known across the galaxy for their bloodthirsty nature in battle, and feared for the curse of flawed gene-seed they carry. The Blood Angels are amongst the longest-living of the Adeptus Astartes, with some of the Chapter's Space Marines having served the Emperor of Mankind for over a thousand standard years. Thanks to recent events, the Blood Angels' numbers have been severely depleted. Under the threat of extinction, and in order to quickly replenish their numbers, the Blood Angels were forced to ask their kindred Successor Chapters from subsequent Astartes Foundings for a tithe of warriors from the related Chapters' pools of Neophytes, their candidate Space Marines. The Blood Angels are one of the five space marine chapters engaged during the First War.