_Placidia_, and been made master-general of her forces. He had united to the Roman troops the barbarians who had occupied Gaul, the Visigoths under Theodoric, the Saxons, the Burgundians, the Ripuarian and the Salian Franks. On the Catalaunian fields, a vast plain near _Chalons_, whither _Attila_ now retreated to find room for the effective use of his cavalry, the two multitudinous armies, each composed of a motley collection of nations, met. It was, like the conflict at Marathon, one of the decisive battles of history. It was to determine whether the Aryan or the Scythian was to be supreme in Europe. The battle-field was strewn, it was said, with the bodies of a hundred and sixty thousand men,--an exaggeration indicating that the carnage was too great to be estimated. Attila was worsted. He encircled his camp with a rampart of wagons; and in the morning the victors saw him standing on the top of a mound composed of the trappings of horsemen, which was to serve as his funeral-pile, with torch-bearers at hand ready to light it in case of defeat. Aëtius was weakened by the withdrawal of the _Visigoths_: the allies did not venture to attack the lion standing thus at bay, but suffered him to return to Germany (451). ATTILA IN ITALY.--The next year _Attila_ invaded Upper Italy. He destroyed _Aquileia_, the inhabitants of which fled to the lagoons of the Adriatic, where their descendants founded _Venice_. Padua, Verona, and other cities were reduced to ashes. At Milan he saw a painting which represented the emperor on his throne, and the chiefs of the Huns prostrate before him. He ordered a picture to be painted in which the king of the Huns sat on the throne, and the emperor was at his feet. The Italians were without the means of defense. _Leo I._ (Leo the Great), bishop of Rome, at the risk of his life accompanied the emperor's ambassadors to Attila's camp. Their persuasions, with rich gifts and the promise of a tribute, availed. The army of Attila was weakened by sickness, and _Aëtius_ was approaching. The king of the Huns decided to retire to his forests. The apparition of the two apostles, _Peter_ and _Paul_, threatening the barbarian with instant death if he did not comply with the prayer of their successor, is the subject of one of the paintings of _Raphael_. Some months after he left Italy _Attila_ died at the royal village near the Danube, probably from the bursting of an artery during the night (453). The nations which he had subjugated regained their freedom. The chiefs of the Huns contended for the crown in conflicts which dissipated their strength. The expeditions of Attila were like a violent tempest,-- destructive for the moment, the traces of which soon disappear.