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
Difficult as it was for the government during the serious war with the Cimbri to place a second army in the field, it could not avoid sending in 651 an army of 14,000 Romans and Italians, not including the transmarine militia, under the praetor Lucius Lucullus to the island. The united slave-army was stationed in the mountains above Sciacca, and accepted the battle which Lucullus offered. The better military organization of the Romans gave them the victory; Athenion was left for dead on the field, Tryphon had to throw himself into the mountain-fortress of Triocala; the insurgents deliberated earnestly whether it was possible to continue the struggle longer.
But the party, which was resolved to hold out to the last man, retained the upper hand; Athenion, who had been saved in a marvellous manner, reappeared among his troops and revived their sunken courage; above all Lucullus with incredible negligence took not the smallest step to follow up his victory; in fact, he is said to have intentionally disorganized the army and to have burned his field baggage, with a view to screen the total inefficacy of his administration and not to be cast into the shade by his successor.
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Reference address : https://www.ellopos.net/elpenor/rome/4-04-rule-restoration.asp?pg=23