Board Thread:Warhammer 40k General Discussion/@comment-202.67.108.41-20140425072251/@comment-78.150.116.181-20150830192052

immuo-repressive drugs...tissue matching is never 100% spot on. That is no reason for the Ultramarines NOT to have taken on spare marines. It is however also not definative proof it occured. Like much in this theatre of speculation, it is non-confirmed.

All rebellious chapters and some loyalists will have rouge marines which go against the status quo...the white scars had a load who were pro-Horus but the legion stayed loyal. The Deathguard were basically the opposite i.g. mainly rebels with only a 'few' loyalists (...relatively speaking).