The Protestants appointed Luther and Melancthon to draw up a confession of their faith. Luther was a stern, unyielding man: Melancthon was amiable and pliant. Though they agreed in their confession, it did not exactly suit either. It was a little too yielding for Luther, and too uncompromising for Melancthon. Subsequently the document was revised by Melancthon, and somewhat softened to meet his own views. As thus modified, it was adopted by the German people who took the title of German Reformed. The Lutherans adhered to the original document. The emperor, in co-operation with the pope, now threw off the mask, and resolved by force of arms to compel all to conform to the doctrines and usages of the Papal Church. He began to gather his armies to crush the Protestants. They entered into a league for mutual protection. A civil, religious war was just about to burst upon Germany, when the Turks, with an army three hundred thousand strong, commenced the ascent of the Danube. The emperor, alarmed by this terrible invasion, was compelled to call upon the Protestants for aid; but they feared the dungeons and flame of the Papal Inquisition more than they did the cimeter of the Turk. They knew full well, that, as soon as the Turks were repelled, the emperor would turn the energies of his sword against them. Still Germany, Protestant and Catholic, had every thing to fear from the ravages and outrages of the barbarian Turk. After long negotiations, the Protestants consented to co-operate with the emperor in repelling the invasion, upon receiving his solemn pledge to grant them freedom of conscience and of worship. Charles was astonished at the energy with which the Protestants came forward to the war. They even tripled the contingents which they had promised, and fell upon the invaders with such intrepidity as to drive them back pell-mell to the banks of the Bosphorus. Charles then, in violation of his pledge, began to proceed against the Protestants. But they, armed, organized, and flushed with victory, were in no mood to submit to this perfidy. Some of the more considerate of the Papal party, foreseeing the torrents of blood that must flow, and the uncertain issue of the conflict, succeeded in promoting a compromise.