|
It's far from impossible.
It could even be during the battle of calth itself. The Death Of Reason was a massive daemonic incursion, and whilst the daemons were....mostly.....aimed at the loyalists, it's not impossible that a force of Word Bearers and Ultramarines might have been cut off and forced to fight together to survive at all. Once things are secure, they'll start shooting at one another again...
But certainly, there might have been turncoats on both sides. For that matter, they might both be turncoats who've decided to turn blackshield (raining baneblades will do that).
|