warning: the above link, thanks to dubious design choices by Amazon, will flip all amazon interactions to Spanish. If you don't speak Spanish, this might be inconvenient.
This might be less destructive:
THOUGHTS OF A MONARCHIST
Genre: Humorous political essay
Word count: 10.000
Link: https://www.amazon.com/dp/B093TMFPKY
If you don't want to buy it, read the 'look inside' sample and tell me your opinion based on that.
Again, let me make it clear, I'm not claiming, nor never claimed WWII was solely a religious war. My only point is that religion had huge implications in the European front.
https://www.amazon.com/Nazi-master-plan-persecution-Christian-ebook/dp/B00CH5XL5M
Also, 5-6 million jews were killed... now if you argue that it was all race-based and none of it had to do with their religion, then sure, you have a point.