The Annals and the Histories · Hist. 3.59

As the occupation of Mevania, and the apparent revival of the war with new vigour, had struck terror into Italy, so now did the timorous retreat of Vitellius give an unequivocal bias in favour of the Flavianists. The Samnites, the Peligni, and the Marsi, roused themselves, jealous at having been anticipated by Campania, and, as men who serve a new master, were energetic in all the duties of war. The army, however, was much distressed by bad weather in its passage over the Apennines, and since they could hardly struggle through the snow, though their march was unmolested, they perceived what danger they would have had to encounter, had not Vitellius been made to turn back by that good fortune, which, not less often than the wisdom of their counsels, helped the Flavianist generals. Here they fell in with Petilius Cerialis, who had escaped the sentries of Vitellius by a rustic disguise and…

Cornelius Tacitus · trans. Church & Brodribb, 1876
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