Are you familiar with the 30 year war?
Very, what’s your question?
The one precipitated by the Catholic rulers attempting to stamp out protestantism in their lands? The one that devolved to where Catholic rulers warred against each other for territorial gains? Where the Catholic rulers ruled by fiat? That one? The one fought mainly in Germany and embroiled the kings and princes of Europe? The war following the St Bartholmew's day massacre where the Pope issued a commemorative coin?