Hardly had Luther been laid to rest when the first general religious war broke out in Germany. There had been a few small wars of this character before, such as those of Hesse against Bamberg and Wurzburg, and against Wuerttemberg, and against Brunswick. But the conflicts had been successfully "localized." Now at last was to come a general battle, as a foretaste of the Thirty Years War of the next century. It has sometimes been doubted whether the Schmalkaldic War was a religious conflict at all. The emperor asserted that his sole object was to reduce rebellious subjects to obedience. Several Protestant princes were his allies, and the territories he conquered were not, for the most part, forced to give up their faith. Nevertheless, it is certain that the fundamental cause of the strain was the difference of creed. A parallel may be found in our own Civil War, in which Lincoln truly claimed that he was fighting only to maintain the union, and yet it is certain that slavery furnished the underlying cause of the appeal to arms. It has recently been shown that the emperor planned the attack on his Protestant subjects as far back, at least, as 1541. All the negotiations subsequent to that time were a mere blind in disguise his preparations. For he labored indefatigably to bring about a condition in which it would be safe for him to embark on the perilous enterprise. Though he was a dull man he had the two qualities of caution and persistence that stood him in better stead than the more showy talents of other statesmen. If, with his huge resources, he never did anything brilliant, still less did he ever take a gambler's chance of failing. {127} The opportune moment came at last in the spring of 1546. Two years before, he had beaten France with the help of the Protestants, and had imposed upon her as one condition of peace that she should make no allies within the Empire. In November of the same year he made an alliance with Paul III, receiving 200,000 ducats in support of his effort to extirpate the heresy. Other considerations impelled him to attack at once. The secession of Cologne and the Palatinate from the Catholic communion gave the Protestants a majority in the Electoral College. Still more decisive was it that Charles was able at this time by playing upon the jealousies and ambitions of the states, to secure important allies within the Empire, including some of the Protestant faith. First, Catholic Bavaria forgot her hatred of Austria far enough to make common cause against the heretics. Then, two great Protestant princes, Maurice of Albertine Saxony and John von Kuestrin--a brother of Joachim II, Elector of Brandenburg--abandoned their coreligionists and bartered support to the emperor in return for promises of aggrandizement. [Sidenote: January 1546]