Both armies were exhausted, and there followed a period of rest. Reënforcements were received by Wurmser, and by Napoleon also. The Austrians still outnumbered him, but Napoleon took the offensive. Wurmser had committed the familiar mistake of dividing his forces. Napoleon fell upon Davidovitch at Roveredo and routed him. Then turning upon Wurmser, who was advancing to the relief of Mantua, Napoleon captured at Primolano the Austrian advance guard. Next day, September 8, 1796, he defeated the main army at Bassano. Wurmser was now in a desperate situation. Shut in by the French on one side and the river Adige on the other, his ruin seemed inevitable. By the mistake of a lieutenant colonel, Legnano had been left by the French without a garrison, and the bridge not destroyed. Here Wurmser crossed, and continued his retreat on Mantua. He gained some brilliant successes over French forces, which sought to cut him off, and he reached Mantua in such good spirits that he called out the garrison and fought the battle of St. George. Defeated in this, he withdrew into the town. He had lost about twenty-seven thousand men in the brief campaign. At length the armies on the Rhine had got in motion. Moreau crossed that river at Kehl, defeated the Austrians, and entered Munich. Jourdan crossed at Dusseldorf, and won the battle of Alten Kirchen. Then the young Archduke Charles, learning a lesson from Napoleon, left a small force to hold Moreau in check, and massed his strength against Jourdan. The French were badly beaten, and both their armies fell back to the Rhine. The original plan of a junction of Jourdan, Moreau, and Bonaparte for an advance upon Vienna was, for the present, frustrated. Encouraged by the success, Austria sent a new army of fifty-three thousand men, under Alvinczy, to recover the lost ground in Italy. Napoleon had about forty thousand troops, several thousand of whom were in hospitals, and once more his safety depended upon preventing the concentration of the enemy.