Ferdinand found himself in great danger. He appealed for aid to Urban VIII. and to Spain but at first the former, believing that the struggle was more political than religious, refused to assist him, though later on, when he realised that the very existence of the Catholic Church in the empire was endangered, he changed his mind and forwarded generous subsidies. Maximilian of Bavaria, who had held aloof for a time, espoused warmly the cause of the Emperor, and Wallenstein, who had been recalled in the hour of danger, raised an immense army in an incredibly short space of time. Oxenstierna, the chancellor of Sweden, took up the work of his master Adolphus and succeeded in bringing about an alliance with the Protestant princes (1633). So low had the national feeling sunk in the empire that the Protestant princes consented to appoint this upstart as director of the campaign and to fight under his command. France supplied the funds to enable the Swedes to carry on the war. For some time very little was done on either side. Negotiations were carried on by Wallenstein with the Swedes, with Saxony, and with France. It was represented to the Emperor that his chosen general was guilty of gross disloyalty. Though the charge of absolute disloyalty has not been proved, still certain actions of Wallenstein coupled with his inactivity gave good colour to the accusation. The Emperor dismissed him from his command, and a little later he was murdered by some of his own soldiers. The war and the negotiations were renewed alternately, but without any result as peace was not desired by either Sweden or France. At last the forces of the Emperor gained a signal victory at Nordlingen (1634). This success had at least one good result in that it detached the Elector of Saxony from the side of Sweden. He had never thrown himself whole-heartedly into the struggle, as he disliked the idea of supporting a foreign invader against his own Emperor, and was not sorry to escape from a very awkward position. The Peace of Prague was concluded between the Emperor and Saxony (1635), according to which the Edict of Restitution was abandoned in great measure, and religious freedom was guaranteed to the Protestants of Silesia.