In his position at Civita Castellana, near Ottricoli, he was attacked by Mack with great determination. Championnet, in his despatch, states that the enemy were forty thousand strong, and advanced in five columns. "General Macdonald, surrounded on all sides, gave proof of his great talents. He received the attack with that courage which distinguishes the man of firm character, and by his able dispositions entirely disconcerted the enemy." His advanced guard, under Kellerman, consisted only of three squadrons of the 19th chasseurs a cheval, the first battalion of the 11th regiment, and two pieces of flying artillery. This handful of brave fellows routed Mack's first column, slew four hundred, and took fifteen pieces of cannon, fifty caissons, and two thousand prisoners, while they had but _thirty_ killed. The Italians of De Mert retired to the heights of Calvi, a steep mountain range, where, after a midnight march, during a severe December storm, Macdonald surrounded and attacked them a few days after, and by a flag of truce summoned them to capitulate. To this they made some ridiculous propositions, but he sent the following ultimatum:-- "The column shall surrender prisoners at discretion, or be put to the sword!" On this they surrendered at once to the number of five thousand, with all their arms, fifteen standards, eight guns, and three hundred horses. Among the prisoners were the Marshal De Mert and Don Carello. After this, he returned to Rome, re-established the Republic, and then taking the route to Capua, followed Mack's Neapolitans, who fled before him. Mack was an Austrian general who had entered the service of Ferdinand of Naples to organize the patriots. For this purpose he had brought with him from Vienna fourteen experienced officers. On the march to Capua Macdonald's soldiers suffered greatly from the constant rain and storms of snow, by the overflow of the mountain torrents, the destruction of all the bridges, and by the rifles of the armed peasantry, who mercilessly slew every straggler. The bravest men in the Neapolitan army were the mountain banditti; and many of these romantic desperadoes, who led armed bands, received the commission of colonel, and were decorated with knightly orders. Fra Diavolo, a brigand by profession, was a colonel in the infantry, and cavaliere of San Constantino; the Abate Proni, a ferocious monk of the Abruzzi; Gaetano Mammone, a miller from Sora; and Benedetto Mangone--three outlaws and brigands, covered themselves with distinction in this horrible war against the French; but Benedetto was a veritable monster. "He never spared the life of a Frenchman who fell into his power; and it is said that he butchered with his own hand four hundred Frenchmen and Neapolitan republicans; and that it was his custom to have a human head placed upon the table when he dined, as other people would have a vase of flowers."