Regrding the Third-Years-War, when we get to the Danish phase, it's definitely a religious war, but one that seems to be between the Lutherans and the Presbyterians!
With 98% of the folks in Scanderhoovia and environs being at least nominally members of the Lutheran state religion, it kind of looks like the Presbyterians "lost" ~ must be why they all moved here, eh?!
Regarding Richilieu, his Grandfather or (Great Grandfather depending on the record you look at) Champigny was the youngest son of a Huguenot noble family (even had Bourbon, Valois, and other well-known relatives). Once Richilieu got a chance he stole Grandpa Champigny's estate for himself. Richilieu stole many other properties from his relatives.
Of course, he was just the sort of fellow who would have done that even if they weren't his relatives, and without respect to anyone's religion. We call people like this "opportunity thieves".
"Once Richilieu got a chance he stole Grandpa Champigny's estate for himself. Richilieu stole many other properties from his relatives."
I didn't know that part; his self-serving opportunism extended apparently through the entire spectrum of his actions. No wonder he was willing to let Scandanavian Protestants try to wipe Catholicism out of Germany.
At least in that most horrible (Thirty Years) war, there were stories of towns saving themselves from devastation by pleading or drinking a liter of wine at one gulp. WW II was not very discriminate of innocent civilians, e.g. from the air.