So long as was possible, he had delayed to move to the rescue of Bavaria, and on every pretext evaded the commands of the Emperor. He had, indeed, after reiterated remonstrances, despatched from Bohemia a reinforcement of some regiments to Count Altringer, who was defending the Lech and the Danube against Horn and Bernard, but under the express condition of his acting merely on the defensive. He referred the Emperor and the Elector, whenever they applied to him for aid, to Altringer, who, as he publicly gave out, had received unlimited powers; secretly, however, he tied up his hands by the strictest injunctions, and even threatened him with death, if he exceeded his orders. When Duke Bernard had appeared before Ratisbon, and the Emperor as well as the Elector repeated still more urgently their demand for succour, he pretended he was about to despatch General Gallas with a considerable army to the Danube; but this movement also was delayed, and Ratisbon, Straubing, and Cham, as well as the bishopric of Eichstaedt, fell into the hands of the Swedes. When at last he could no longer neglect the orders of the Court, he marched slowly toward the Bavarian frontier, where he invested the town of Cham, which had been taken by the Swedes. But no sooner did he learn that on the Swedish side a diversion was contemplated, by an inroad of the Saxons into Bohemia, than he availed himself of the report, as a pretext for immediately retreating into that kingdom. Every consideration, he urged, must be postponed to the defence and preservation of the hereditary dominions of the Emperor; and on this plea, he remained firmly fixed in Bohemia, which he guarded as if it had been his own property. And when the Emperor laid upon him his commands to move towards the Danube, and prevent the Duke of Weimar from establishing himself in so dangerous a position on the frontiers of Austria, Wallenstein thought proper to conclude the campaign a second time, and quartered his troops for the winter in this exhausted kingdom.