Board Thread:Warhammer 40k General Discussion/@comment-14745711-20130906234048/@comment-111.94.5.173-20150420025626

My theory... During the last year of the 41st millenium, the tyrannids, orks, eldars, traitor legions etc. will be attacking the imperium en masse. Then, while the space marines are fighting their enemies, they will uncover some sort of corruption by the High Lords of Terra. It's possible that they are the ones that instigated the Horus Heresy. After all, the fact that they will replace the Emperor as the ruler of mankind is a pretty good motive. But, this would also mean that some Space Marine chapters are in fact traitor chapters for cooperating with them. So, yeah.... that's where my theory's stuck