Board Thread:Warhammer 40k General Discussion/@comment-92.97.77.182-20130321145115/@comment-28917471-20160426165856

Let's break it down:

1. The Legion itself - The Alpha Legion are no longer a Legion. They have been divided into a number of warbands led by individual Chaos Lords. Some warbands worship the Chaos Gods, some don't (I think we all can agree on that).

2. Loyalty - Clearly, the Alpha Legion's warbands are not loyal to the Imperium. As their sole goal is to corrupt the Imperium from within so it will be easier to destroy and conquer it. None of their actions show any sign of loyalty towards the Imperium.