The Swedes, whose leader was now the chancellor Oxenstjerna, were stunned by this catastrophe, but in a desultory fashion they maintained the struggle, and in April 1633 a new league was formed at Heilbronn between them and the representatives of four of the German circles, while by a new agreement France continued to furnish monetary aid. Of this alliance Sweden was the predominant member, but the German allies had a certain voice in the direction of affairs, the military command being divided between the Swedish general Horn and Bernhard, duke of Saxe-Weimar. About this time some discontent arose in the allied army, and to allay this Bernhard was granted the bishoprics of Würzburg and of Bamberg, with the title of duke of Franconia, but on the strange condition that he should hold the duchy as the vassal of Sweden, not as a vassal of the Empire. The war, thus revived, was waged principally in the valleys of the Danube and the Rhine, the Swedes, seizing Alsace while Bernhard captured Regensburg. Meanwhile Wallenstein was again arousing the suspicions of his nominal allies. Instead of attacking the enemy with his accustomed vigour, he withdrew into Bohemia and was engaged in lengthy negotiations with the Saxon soldier and diplomatist, Hans Georg von Arnim (1581-1641); his object being doubtless to come to terms with Saxony and Brandenburg either with or without the emperor's consent. His prime object was, however, to secure for himself a great territorial position, possibly that of king of Bohemia, and it is obvious that his aims and ambitions were diametrically opposed to the ends desired by Ferdinand and by his Spanish and Bavarian allies. At length he set his troops in motion. Having gained some successes in the north-east of Germany he marched to succour the hardly pressed elector of Bavaria; then suddenly abandoning this purpose he led his troops back to Bohemia and left Bernhard of Saxe-Weimar in possession of the Danube valley. It is not surprising that a cry, louder than ever, now arose for his dismissal. Ferdinand did as he was required. In January 1634 he declared Wallenstein deposed from his command, but he was still at the head of an army when he was murdered in the following month at Eger. Commanded now by the king of Hungary, afterwards the emperor Ferdinand III., the imperialists retook Regensburg and captured Donauwörth; then, aided by some Spanish troops, they gained a victory at Nördlingen in September 1634, the results of which were as decisive and as satisfactory for them as the results of Breitenfeld had been for their foes two years before. France takes part in the war.