Board Thread:Warhammer 40k General Discussion/@comment-98.81.158.208-20140211041148/@comment-3416287-20140318141312

Now, I'm not sure if this is 100% correct, but as I understand it, Games Workshop purposely left those two legions out. This is so that players could make their own loyalist and traitor legion. Whatever you decide their fate was, is true(to a certain degree, it won't be canon for everyone, but it will be canon for you).