I think you need to dig a little deeper. While religious conviction may be the vehicle, it's how the religious tenets are interpreted and summarily deployed. Personally, I was educated by the Jesuits - they taught me what hatred had done (eg. the Holocaust) and I learned to not hate.

The Jesuits were a key force in the Counter-Reformation, and their influence extended to the political and military landscape of the Thirty Years' War.

Yeah - I'm not THAT old.

They served as confessors and advisors to Catholic monarchs, shaping their policies and actions.

The Jesuits' interest in military affairs, fueled by figures like Ignatius of Loyola, led them to support military solutions against Protestant powers.

Religion is just the tool.

Maybe in your world but in Europe it was mostly for land values (money, food, influence...). And religion of course.