For the moment, however, the allied forces continued to co-operate in Italy against the French army on the Apennines covering Genoa. This army had received reinforcements, and was now placed under the command of Joubert, one of the youngest and most spirited of the Republican generals. Joubert determined to attack the Russians before the fall of Mantua should add the besieging army to Suvaroff's forces in the field. But the information which he received from Lombardy misled him. In the second week of August he was still unaware that Mantua had fallen a fortnight before. He descended from the mountains to attack Suvaroff at Tortona, with a force about equal to Suvaroff's own. On reaching Novi he learnt that the army of Mantua was also before him (Aug. 15). It was too late to retreat; Joubert could only give to his men the example of Republican spirit and devotion. Suvaroff himself, with Kray, the conqueror of Mantua, began the attack: the onset of a second Austrian corps, at the moment when the strength of the Russians was failing, decided the day. Joubert did not live to witness the close of a defeat which cost France eleven thousand men. [79] [Suvaroff goes into Switzerland.] The allied Governments had so framed their plans that the most overwhelming victory could produce no result. Instead of entering France, Suvaroff was compelled to turn back into Switzerland, while the Austrians continued to besiege the fortresses of Piedmont. In Switzerland Suvaroff had to meet an enemy who was forewarned of his approach, and who had employed every resource of military skill and daring to prevent the union of the two Russian armies now advancing from the south and the north. Before Suvaroff could leave Italy, a series of admirably-planned attacks had given Massena the whole network of the central Alpine passes, and closed every avenue of communication between Suvaroff and the army with which he hoped to co-operate. The folly of the Austrian Cabinet seconded the French general's exertions. No sooner had Korsakoff and the new Russian division reached Schaffhausen than the Archduke Charles, forced by his orders from Vienna, turned northwards (Sept. 3), leaving the Russians with no support but Hotze's corps, which was scattered over six cantons. [80] Korsakoff advanced to Zürich; Massena remained in his old position on the Uetliberg. It was now that Suvaroff began his march into the Alps, sorely harassed and delayed by the want of the mountain-teams which the Austrians had promised him, and filled with the apprehension that Korsakoff would suffer some irreparable disaster before his own arrival. [Second Battle of Zürich, Sept. 26.]