Meanwhile Augereau had seized the outposts of Millessimo and cut off Provera, with 2,000 Austrians who occupied an eminence upon the mountain of Cossaria, from the main body of Colli's army. Provera took refuge in a ruined castle which he defended with great bravery, hoping to receive assistance from Colli. The next morning Napoleon, who had arrived in the night, forced Colli to battle and compelled him to retreat towards Ceva. Provera imitated the gallant example of Colonel Rampon in his defense, but not with the same success. He was compelled to surrender his sword to Bonaparte at discretion, after a loss of 10,000 in killed and prisoners, twenty-two cannon and fifteen standards. The French found on the summit of the Alps every species of ammunition and other necessities which the celerity of their march had prevented them from carrying. Dego, situated at the summit of the Alps, secured the entrance of the French into Italy, cut off the communications between the Austrian and Sardinian armies, and placed the conqueror in a situation to crush them in succession one after the other. Beaulieu, fully sensible of the danger of his situation, collected the best troops in his army, and at break of day on the 15th of April, retook Dego at the head of 7,000 men. The Austrians stood two attacks headed by Napoleon, but at the third Causse rushed forward, holding his plumed hat on the point of his sword, and Dego was soon again in possession of the French. For this piece of gallantry he immediately received the rank of brigadier-general. Here also, Lannes, who lived to be a marshal of the Empire, first attracted the notice of Napoleon, and was promoted from lieutenant-colonel to colonel. The triumph, however, was purchased with the life of the brave General Causse. He was carried out of the mêlée mortally wounded. Napoleon passed near him as he lay. "Is Dego retaken?" asked the dying officer. "It is ours," replied Napoleon. "Then long live the Republic!" cried Causse, "I die content." Hotly pursued by the victors, Colli rallied his fugitives at Mondovi, where they again yielded to the irrisistible onset of the French, the Sardinian commander leaving his best troops, baggage and cannon on the field. The action was a most severe one in which, among others, the French general, Stengel, a brave and excellent officer, was killed, and the cavalry would have been overpowered but for the desperate valor of Murat. The Sardinians lost ten stands of colors and fifteen hundred prisoners, among whom were three generals. The Sardinian army had now ceased to exist, and the Austrians were flying to the frontiers of Lombardy.