The war was fought primarily in what is now Germany , and at various points involved most of the countries of Europe .
The Thirty Years ' War ( 1618 -- 1648 ) was one of the most destructive conflicts in European history .
The war was fought primarily in what is now Germany , and at various points involved most of the countries of European .
The Thirty Years ' War ( 1618 -- 1648 ) was one of the most destructive conflicts in European history .