Eventually, at about 6 pm, the French prepared for an attack, with Marc Antoine de Beaumont's cavalry being sent to ford the river upstream, and a column consisting of the 2nd battalion of carabiniers (elite light infantry) being readied inside the walls of the town. The carabiniers then stormed out of the gates and onto the bridge. Vigo-Roussillon stated that the enemy artillery fired one salvo when the troops were part-way across, causing numerous casualties, at which point the column wavered and stopped, but a number of senior French officers rushed to the head of the column and led it forward again. These officers included André Masséna, Louis Berthier, Jean Lannes, Jean-Baptiste Cervoni, and Claude Dallemagne. (Some authorities suggest that the French retreated and attacked again, but an important Austrian source supports the thesis of a single attack.)