The fame of the victory, and more especially of the miracle, has encouraged a vain persuasion, that the whole army, or rather nation, of Germans, who migrated from the shores of the Baltic, miserably perished under the walls of Florence. Such indeed was the fate of Radagaisus himself, of his brave and faithful companions, and of more than one third of the various multitude of Sueves and Vandals, of Alani and Burgundians, who adhered to the standard of their general. The union of such an army might excite our surprise, but the causes of separation are obvious and forcible; the pride of birth, the insolence of valor, the jealousy of command, the impatience of subordination, and the obstinate conflict of opinions, of interests, and of passions, among so many kings and warriors, who were untaught to yield, or to obey. After the defeat of Radagaisus, two parts of the German host, which must have exceeded the number of one hundred thousand men, still remained in arms, between the Apennine and the Alps, or between the Alps and the Danube. It is uncertain whether they attempted to revenge the death of their general; but their irregular fury was soon diverted by the prudence and firmness of Stilicho, who opposed their march, and facilitated their retreat; who considered the safety of Rome and Italy as the great object of his care, and who sacrificed, with too much indifference, the wealth and tranquillity of the distant provinces. The Barbarians acquired, from the junction of some Pannonian deserters, the knowledge of the country, and of the roads; and the invasion of Gaul, which Alaric had designed, was executed by the remains of the great army of Radagaisus.
Yet if they expected to derive any assistance from the tribes of Germany, who inhabited the banks of the Rhine, their hopes were disappointed. The Alemanni preserved a state of inactive neutrality; and the Franks distinguished their zeal and courage in the defence of the of the empire. In the rapid progress down the Rhine, which was the first act of the administration of Stilicho, he had applied himself, with peculiar attention, to secure the alliance of the warlike Franks, and to remove the irreconcilable enemies of peace and of the republic. Marcomir, one of their kings, was publicly convicted, before the tribunal of the Roman magistrate, of violating the faith of treaties. He was sentenced to a mild, but distant exile, in the province of Tuscany; and this degradation of the regal dignity was so far from exciting the resentment of his subjects, that they punished with death the turbulent Sunno, who attempted to revenge his brother; and maintained a dutiful allegiance to the princes, who were established on the throne by the choice of Stilicho. When the limits of Gaul and Germany were shaken by the northern emigration, the Franks bravely encountered the single force of the Vandals; who, regardless of the lessons of adversity, had again separated their troops from the standard of their Barbarian allies. They paid the penalty of their rashness; and twenty thousand Vandals, with their king Godigisclus, were slain in the field of battle. The whole people must have been extirpated, if the squadrons of the Alani, advancing to their relief, had not trampled down the infantry of the Franks; who, after an honorable resistance, were compelled to relinquish the unequal contest. The victorious confederates pursued their march, and on the last day of the year, in a season when the waters of the Rhine were most probably frozen, they entered, without opposition, the defenceless provinces of Gaul. This memorable passage of the Suevi, the Vandals, the Alani, and the Burgundians, who never afterwards retreated, may be considered as the fall of the Roman empire in the countries beyond the Alps; and the barriers, which had so long separated the savage and the civilized nations of the earth, were from that fatal moment levelled with the ground.