Of this great project, the part intrusted to Buonaparte was completely executed, and for some time the fortune of war seemed equally auspicious to France upon the Rhine as in Italy. Moreau and Jourdan crossed that great national boundary at Neuwied and Kehl, and moved eastward through Germany, forming a connected front of more than sixty leagues in breadth, until Moreau had actually crossed the river Lech, and was almost touching with his right flank the passes of the Tyrol, through which he was, according to the plan of the campaign, to have communicated with Buonaparte. During this advance of two hostile armies, amounting each to seventy-five thousand men, which filled all Germany with consternation, the Austrian leader Wartensleben was driven from position to position by Jourdan, while the Archduke Charles was equally unable to maintain his ground before Moreau. The imperial generals were reduced to this extremity by the loss of the army, consisting of from thirty to thirty-five thousand men, who had been detached under Wurmser to support the remains of Beaulieu's forces, and reinstate the Austrian affairs in Italy, and who were now on their march through the Tyrol for that purpose. But the archduke was an excellent and enterprising officer, and at this important period he saved the empire of Austria by a bold and decided manœuvre. Leaving a large part of his army to make head against Moreau, or at least to keep him in check, the archduke moved to the right with the rest, so as to form a junction with Wartensleben, and overwhelm Jourdan with a local superiority of numbers, being the very principle on which the French themselves achieved so many victories. Jourdan was totally defeated, and compelled to make a hasty and disorderly retreat, which was rendered disastrous by the insurrection of the German peasantry around his fugitive army. Moreau, also unable to maintain himself in the heart of Germany, when Jourdan, with the army which covered his left flank, was defeated, was likewise under the necessity of retiring, but conducted his retrograde movement with such dexterity, that his retreat through the Black Forest, where the Austrians hoped to cut him off, has been always judged worthy to be compared to a great victory.[167] Such were the proceedings on the Rhine, and in the interior of Germany, which must be kept in view as influencing at first by the expected success of Moreau and Jourdan, and afterwards by their actual failure, the movements of the Italian army.[168] [Sidenote: ADVANCE OF WURMSER.]