The easiest example to cite for Muslim Nazis are the Ustaše. They were a bunch of Croatian WW2 Nazis that were built on Croat ultranationalist sentiment. They were predominantly compromised of Roman Catholics but they considered Bosniaks to be Muslim Croats so Islam was given the thumbs up. Orthodox Christianity wasn't because that was the religion of the Serbians who were the enemy race so that had to be obliterated in the nearby vicinity along with the Serbians.
When Turks came in the Balkans, Greek orthodox chose to team up with Islam against Catholic church.
"Same enemy" mentality has been happening for ever.
Now watch me get roasted by the balkan bros somehow

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Peak mental gymnastics, none of this makes any sense. Balkan tribal warfare negs everything else.😂
Why is there so much diversity in the Balkans ? France which is twice bigger literally went into crusades within its own borders for many centuries so that only one people with one language could exist.