I'm not so sure I agree with your interpretation of the Imperium (or Chaos), but you've done some nice work here. I've just got two problems with it. The first is the concept of the Astartes as a superior race. While undoubtedly true from any objective standpoint, they're always described as "sacrificing" their humanity - the point being that to be human is considered a sacred privilege, which the Space Marines forgo in order to defend the teeming masses of Humanity (note the capitalization). While they are undoubtedly proud to be Marines, it's just not the same thing.
The other, rather briefer point is more one of opinion - I'm not a fan of the term "Kompanies". It reads... Orky, or something. But maybe that's just me.
Overall, though, nicely done. Oh, and one last thing - I note the Swastika Chapter livery. Could not the point be made more subtly with the funny little lightning-bolt SS things?
Four Colditz salads and a Hermann Goering.