The junction took place at Giessen, and they now felt themselves strong enough to meet the enemy. The latter had followed the Swedes into Hesse, in order to intercept their commissariat, and to prevent their union with Turenne. In both designs they had been unsuccessful; and the Imperialists now saw themselves cut off from the Maine, and exposed to great scarcity and want from the loss of their magazines. Wrangel took advantage of their weakness, to execute a plan by which he hoped to give a new turn to the war. He, too, had adopted the maxim of his predecessor, to carry the war into the Austrian States. But discouraged by the ill success of Torstensohn's enterprise, he hoped to gain his end with more certainty by another way. He determined to follow the course of the Danube, and to break into the Austrian territories through the midst of Bavaria. A similar design had been formerly conceived by Gustavus Adolphus, which he had been prevented carrying into effect by the approach of Wallenstein's army, and the danger of Saxony. Duke Bernard moving in his footsteps, and more fortunate than Gustavus, had spread his victorious banners between the Iser and the Inn; but the near approach of the enemy, vastly superior in force, obliged him to halt in his victorious career, and lead back his troops. Wrangel now hoped to accomplish the object in which his predecessors had failed, the more so, as the Imperial and Bavarian army was far in his rear upon the Lahn, and could only reach Bavaria by a long march through Franconia and the Upper Palatinate. He moved hastily upon the Danube, defeated a Bavarian corps near Donauwerth, and passed that river, as well as the Lech, unopposed. But by wasting his time in the unsuccessful siege of Augsburg, he gave opportunity to the Imperialists, not only to relieve that city, but also to repulse him as far as Lauingen. No sooner, however, had they turned towards Suabia, with a view to remove the war from Bavaria, than, seizing the opportunity, he repassed the Lech, and guarded the passage of it against the Imperialists themselves. Bavaria now lay open and defenceless before him; the French and Swedes quickly overran it; and the soldiery indemnified themselves for all dangers by frightful outrages, robberies, and extortions. The arrival of the Imperial troops, who at last succeeded in passing the Lech at Thierhaupten, only increased the misery of this country, which friend and foe indiscriminately plundered.