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.