Moreau delayed to commence the campaign; his material was insufficient; Alsace and Switzerland, exhausted of resources, could not furnish the means of transport required by his movement. The First Consul urged him. "Obtain a success as soon as possible, that you may be able by a diversion in some degree to expedite the operations in Italy," he wrote to him on April 24; "every day's delay is extremely disastrous to us." On April 26, Moreau passed the Rhine at Strasburg, at Brisach, and at Basle, thus deceiving General Kray, who defended the defiles of the Black Forest, whilst the different divisions of the French army reascended and repassed the Rhine, in order to cross it afresh without difficulty at Schaffhausen. The Austrians had not yet collected their forces, dispersed by the unlooked-for movement they found themselves obliged to execute; the French corps were themselves dispersed when the battle commenced, on May 3, at Engen. After a furious struggle at several points, General Moreau achieved a splendid victory; two days later the same fortune crowned the battle of Moesskirch; the loss on both sides was great. The action was not well combined; Marshal Kray at first fell back behind the Danube; by the advice of his council of war he decided to defend the magazines at Biberach. He repassed the river, and offered battle to the corps of Gouvion St. Cyr, then hampered with Moreau, bearing his direction with difficulty. The positions occupied by the Austrians were everywhere attacked at once; their troops, already demoralized by several defeats, retired in disorder. Kray fell back on Ulm, where an entrenched camp was ready for him. General Moreau was compelled to weaken his army by detaching a corps of 1800 men, necessary for the operations of the First Consul. He attempted without success a movement intended to turn the flank of General Kray, and resolved to blockade him in his positions, and wait for the result of the manoeuvres of Bonaparte. On the 27th May he wrote to Bonaparte, "We await with impatience the announcement of your success. M. de Kray and I are groping about here--he to keep his army round Ulm, I to make him quit the post. It would have been dangerous, especially for you, if I had carried the war to the left bank of the Danube. Our present position has forced the Prince of Reuss to remove himself to the passes of the Tyrol, to the sources of the Lech and the Iller; thus he is no longer dangerous for you. If M. de Kray comes towards me, I shall still retreat as far as Meiningen; there I shall join General Lecourbe, and we shall fight. If M. de Kray marches upon Augsburg, I shall do the same; he will quit his support at Ulm, and then we shall see what will have to be done to cover your movements. We should find more advantages in carrying on the war upon the left bank of the Danube, and making Wurtemberg and Franconia contribute to it; but that would not suit you, as the enemy would be able to send