Yet even at this crisis the commander, confident in his central position, and knowing his ability to ward off the encircling swoops of the Austrian eagle, maintained that calm demeanour which moved the wonder of smaller minds. His confidence in his seasoned troops was not misplaced. The Imperialists, overburdened by long marches and faint now for lack of food, could not maintain their first advantage. Some of their foremost troops, that had won the broken ground in front of St. Mark's Chapel, were suddenly charged by French horse; they fled in panic, crying out, "French cavalry!" and the space won was speedily abandoned to the tricolour. This sudden rebuff was to dash all their hopes of victory; for at that crisis of the day the chief Austrian column of nearly 8,000 men was struggling up the zigzag ascent leading from the valley of the Adige to the plateau, in the fond hope that their foes were by this time driven from the summit. Despite the terrible fire that tore their flanks, the Imperialists were clutching desperately at the plateau, when Bonaparte put forth his full striking power. He could now assail the crowded ranks of the doomed column in front and on both flanks. A charge of Leclerc's horse and of Joubert's infantry crushed its head; volleys of cannon and musketry from the plateau tore its sides; an ammunition wagon exploded in its midst; and the great constrictor forthwith writhed its bleeding coils back into the valley, where it lay crushed and helpless for the rest of the fight. Animated by this lightning stroke of their commander, the French turned fiercely towards Monte Baldo and drove back their opponents into the depression at its foot. But already at their rear loud shouts warned them of a new danger. The western detachment of the Imperialists had meanwhile worked round their rear, and, ignorant of the fate of their comrades, believed that Bonaparte's army was caught in a trap. The eyes of all the French staff officers were now turned anxiously on their commander, who quietly remarked, "We have them now." He knew, in fact, that other French troops marching up from Verona would take these new foes in the rear; and though Junot and his horsemen failed to cut their way through so as to expedite their approach, yet speedily a French regiment burst through the encircling line and joined in the final attack which drove these last assailants from the heights south of Rivoli, and later on compelled them to surrender.