Fourth and Twenty-second legions had broken down Galba's statues and sworn allegiance to the Senate and People of Rome. As this oath was meaningless, it seemed best to seize the critical moment and offer them an emperor. Vitellius dispatched messengers to inform his own troops and generals that the army of the Upper Province had revolted from Galba; so they must either make war on the rebels immediately, or, if they preferred peace and unity, make an emperor for themselves; and there was less danger, he reminded them, in choosing an emperor than in looking for one.
57The quarters of the First legion were nearest at hand, and Fabius Valens was the most enterprising of the generals. On the following day he entered Cologne with the cavalry of his legion and auxiliaries, and saluted Vitellius as emperor. The other legions of the province followed suit, vying with each other in enthusiasm; and the army of the Upper Province, dropping the fine-sounding titles of the Senate and People of Rome, joined Vitellius on the third of January, which clearly showed that on the two previous days they were not really at the disposal of a republican government. The inhabitants of Cologne and the Treviri and Lingones, rivalling the zeal of the troops, made offers of assistance, or of horses or arms or money, each according to the measure of their strength, wealth,
