Alvinzi was now compelled to give way, and commence his retreat on Montebello. He disposed seven thousand men in echelon to cover this movement, which was accomplished without very much loss; but his ranks had been much thinned by the slaughter of the three battles of Arcola. Eight thousand men has been stated as the amount of his losses.[207] The French who made so many and so sanguinary assaults upon the villages, must also have suffered a great deal. Buonaparte acknowledges this in energetic terms. "Never," he writes to Carnot, "was field of battle so disputed. I have almost no generals remaining--I can assure you that the victory could not have been gained at a cheaper expense. The enemy were numerous, and desperately resolute."[208] The truth is, that Buonaparte's mode of striking terror by these bloody and desperate charges in front upon strong positions, was a blemish in his system. They cost many men, and were not uniformly successful. That of Arcola was found a vain waste of blood, till science was employed instead of main force, when the position was turned by Guieux on the first day; and on the third, by the troops who crossed the Alpon. The tardy conduct of Davidowich, during these three undecided days of slaughterous struggle, is worthy of notice and censure. It would appear that from the 10th November that general had it in his power to attack the division which he had hitherto driven before him, and that he had delayed doing so till the 16th; and on the 18th, just the day after Alvinzi had made his retreat, he approached Verona on the right bank. Had these movements taken place before Alvinzi's defeat, or even during any of the three days preceding, when the French were engaged before Arcola, the consequences must have been very serious. Finding, however, that Alvinzi had retreated, Davidowich followed the same course, and withdrew into the mountains, not much annoyed by the French, who respected the character of his army, which had been repeatedly victorious, and felt the weakness incident to their own late losses.[209] Another incidental circumstance tends equally strongly to mark the want of concert and communication among the Austrian generals. Wurmser, who had remained quiet in Mantua during all the time when Alvinzi and Davidowich were in the neighbourhood, made a vigorous sally on the 23d November; when his doing so was of little consequence, since he could not be supported.