A final religious conference held at Ratisbon demonstrated more clearly than ever the hopelessness of conciliation. Whereas a semi-Lutheran doctrine of justification was adopted, the Protestants prepared two long memoirs rejecting the authority of the council recently convened at Trent. And then, in the summer, war broke out. At this moment the forces of the Schmalkaldic League were superior to those of its enemies. But for poor leadership and lack of unity in command they would probably have won. Towards the last of August and early in September the Protestant troops bombarded the imperial army at Ingolstadt, but failed to follow this up by a decisive {128} attack, as was urged by General Schaertlin of Augsburg. Lack of equipment was partly responsible for this failure. When the emperor advanced, the Elector of Saxony and the Landgrave of Hesse retired each to his own land. Another futile attempt of the League was a raid on the Tyrol, possibly influenced by the desire to strike at the Council of Trent, certainly by no sound military policy. The effect of these indecisive counsels was that Charles had little trouble in reducing the South German rebels, Augsburg, Ulm, Nuremberg, and Wuerttemberg. The Elector Palatine hastened to come to terms by temporarily abandoning his religion. [Sidenote: February, 1547] A counter-reformation was also effected in Cologne. Augsburg bought the emperor's pardon by material concessions. [Sidenote: October 1546] In the meantime Duke Maurice of Albertine Saxony, having made a bargain with the emperor, attacked his second cousin the Elector. Though Maurice was not obliged to abjure his faith, his act was naturally regarded as one of signal treachery and he was henceforth known by the nickname "Judas." Maurice conquered most of his cousin's lands, except the forts of Wittenberg and Gotha. Charles's Spanish army under Alva now turned northward, forced a passage of the Elbe and routed the troops of John Frederic at the battle of Muelberg, near Torgau, on April 24, 1547. John Frederic was captured wounded, and kept in durance several years. Wittenberg capitulated on May 19, and just a month later Philip of Hesse surrendered at Halle. He also was kept a prisoner for some years. Peace was made by the mediation of Brandenburg. The electoral vote of Saxony was given to Maurice, and with it the best part of John Frederic's lands, including Wittenberg. No change of religion was required. The net result of the war was to {129} increase the imperial power, but to put a very slight check upon the expansion of Protestantism.