Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Successes of the Sullans in Upper Italy - Etruria Occupied by the Sullans
But while the war stood still in Etruria and in Latium, matters came to a decision in the valley of the Po. There the general of the democracy, Gaius Norbanus, had hitherto maintained the upper hand, had attacked Marcus Lucullus the legate of Metellus with superior force and compelled him to shut himself up in Placentia, and had at length turned against Metellus in person. He encountered the latter at Faventia, and immediately made his attack late in the afternoon with his troops fatigued by their march; the consequence was a complete defeat and the total breaking up of his corps, of which only about 1000 men returned to Etruria. On the news of this battle Lucullus sallied from Placentia, and defeated the division left behind to oppose him at Fidentia (between Piacenza and Parma).
The Lucanian troops of Albinovanus deserted in a body: their leader made up for his hesitation at first by inviting the chief officers of the revolutionary army to banquet with him and causing them to be put to death; in general every one, who at all could, now concluded his peace. Ariminum with all its stores and treasures fell into the power of Metellus; Norbanus embarked for Rhodes; the whole land between the Alps and Apennines acknowledged the government of the Optimates. The troops hitherto employed there were enabled to turn to the attack of Etruria, the last province where their antagonists still kept the field.
When Carbo received this news in the camp at Clusium, he lost his self-command; although he had still a considerable body of troops under his orders, he secretly escaped from his headquarters and embarked for Africa. Part of his abandoned troops followed the example which their general had set, and went home; part of them were destroyed by Pompeius: Carrinas gathered together the remainder and led them to Latium to join the army of Praeneste. There no change had in the meanwhile taken place; and the final decision drew nigh. The troops of Carrinas were not numerous enough to shake Sulla's position; the vanguard of the army of the oligarchic party, hitherto employed in Etruria, was approaching under Pompeius; in a few days the net would be drawn tight around the army of the democrats and the Samnites.
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Reference address : https://www.ellopos.net/elpenor/rome/4-09-cinna-sulla.asp?pg=47