I'm guessing SS or Abwehr (Nazi Counterintelligence - they plotted with the Vatican to undermine Hitler).
The Nazi ideology is important in as far as the eugenics and population control is concerned. You see there is just far too many people on this planet for the comfort of the elite. That many people pose a risk to their power. I believe they want to limit the total world population to 500 million as seen on the Georgia guide stones.
To do this it would require a great culling event or mass extinction event.
I'm guessing when Q says this is bigger than you can possibly imagine means one of two things.
Either A: there was going to be a horrible mass extinction event and billions of people were to die.
B: The elite were going to usher in the singularity where all of our conscious minds/souls were to be uploaded to a massive hive mind. Ask yourself something. What would the sadistic, satanic elite do with your consciousness once it was uploaded to THEIR machine? Hell on Earth.