adventurers from all quarters of Germany; and even sovereign princes, stimulated by the desire of glory or of gain, offered to raise regiments for the service of Austria. Now, therefore, for the first time in this war, an imperial army appeared in Germany; -- an event which if it was menacing to the Protestants, was scarcely more acceptable to the Catholics. Wallenstein had orders to unite his army with the troops of the League, and in conjunction with the Bavarian general to attack the King of Denmark. But long jealous of Tilly's fame, he showed no disposition to share with him the laurels of the campaign, or in the splendour of his rival's achievements to dim the lustre of his own. His plan of operations was to support the latter, but to act entirely independent of him. As he had not resources, like Tilly, for supplying the wants of his army, he was obliged to march his troops into fertile countries which had not as yet suffered from war. Disobeying, therefore, the order to form a junction with the general of the League, he marched into the territories of Halberstadt and Magdeburg, and at Dessau made himself master of the Elbe. All the lands on either bank of this river were at his command, and from them he could either attack the King of Denmark in the rear, or, if prudent, enter the territories of that prince. Christian IV. was fully aware of the danger of his situation between two such powerful armies. He had already been joined by the administrator of Halberstadt, who had lately returned from Holland; he now also acknowledged Mansfeld, whom previously he had refused to recognise, and supported him to the best of his ability. Mansfeld amply requited this service. He alone kept at bay the army of Wallenstein upon the Elbe, and prevented its junction with that of Tilly, and a combined attack on the King of Denmark. Notwithstanding the enemy's superiority, this intrepid general even approached the bridge of Dessau, and ventured to entrench himself in presence of the imperial lines. But attacked in the rear by the whole force of the Imperialists, he was obliged to yield to superior numbers, and to abandon his post with the loss of 3,000 killed. After this defeat, Mansfeld withdrew into Brandenburg, where he soon recruited and reinforced his army; and suddenly turned into Silesia, with the view of marching from thence into Hungary; and, in conjunction with Bethlen Gabor, carrying the war into the heart of Austria. As the Austrian dominions in that quarter were entirely defenceless, Wallenstein received immediate orders to leave the King of Denmark, and if possible to intercept Mansfeld's progress through Silesia.