 Wallenstein was able to recruit some 30,000 men (later expanded up to 100,000), with whom he was able to defeat the Protestants in Silesia, Anhalt and Denmark.In the wake of these Catholic military successes, in 1629 Ferdinand issued the Edict of Restitution, by which all the lands stripped from Catholics after the Peace of Passau of 1552 would be returned.His military success caused the tottering Protestants to call in Gustavus II Adolphus, King of Sweden.