The situation of the French became critical, and, what was worse, the soldiers perceived it; and complained that they had to sustain the whole burden of the war, had to encounter army after army, and must succumb at last under the renewed and unwearied efforts of Austria. Buonaparte parried these natural feelings as well as he could,[204] promising that their conquest of Italy should be speedily sealed by the defeat of this Alvinzi; and he applied his whole genius to discover the means of bringing the war to an effective struggle, in which he confided that, in spite of numbers, his own talents, and the enterprising character of an army so often victorious, might assure him a favourable result. But it was no easy way to discover a mode of attacking, with even plausible hopes of success. If he advanced northward on the right bank to seek out and destroy Davidowich, he must weaken his line on the Adige, by the troops withdrawn to effect that purpose; and during his absence, Alvinzi would probably force the passage of the river at some point, and thus have it in his power to relieve Mantua. The heights of Caldiero, occupied by the Austrian main body, and lying in his front, had, by dire experiment, been proved impregnable. In these doubtful circumstances the bold scheme occurred to the French general, that the position of Caldiero, though it could not be stormed, might be turned, and that by possessing himself of the village of Arcola, which lies to the left, and in the rear of Caldiero, the Austrians might be compelled to fight to disadvantage. But the idea of attacking Arcola was one which would scarce have occurred to any general save Buonaparte. Arcola is situated upon a small stream called the Alpon, which, as already hinted, finds its way into the Adige, through a wilderness of marshes, intersected with ditches, and traversed by dikes in various directions. In case of an unsuccessful attack, the assailants were like to be totally cut off in the swamps. Then to debouche from Verona, and move in the direction of Arcola, would have put Alvinzi and his whole army on their guard. Secrecy and celerity are the soul of enterprise. All these difficulties gave way before Napoleon's genius.