(1609–35) Military alliance of the Catholic powers of Germany, led by Maximilian I, duke of Bavaria, and designed to stem the growth of Protestantism in Germany. Plans for a league had long been discussed, but the formation of the Protestant Union in 1608 finally caused the Catholics to unite. In alliance with the Habsburg emperors, the League's forces, led by Graf von Tilly, played a key role in the Thirty Years' War. The league was abolished by the Peace of Prague (1635).
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