An international conflict taking place in northern Europe from 1618 to 1648. The war was fought between Catholics and Protestants and also drew in the national armies of France, Sweden, Spain, Denmark, and the Habsburg dynasty that ruled the Holy Roman Empire.
Thirty Years War. Thirty Years' War (1618–48) Conflict fought mainly in Germany, arising out of religious differences and developing into a struggle for power in Europe. It began with a Protestant revolt in Bohemia against the Habsburg Emperor, Ferdinand II. Hope this helped!
