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
Peace at Dardanus - Sulla against Fimbria - Fimbria's Death
So Sulla, attended by his legions and by Archelaus, crossed the Hellespont; after he had met with Mithradates on its Asiatic shore at Dardanus and had orally concluded the treaty, he made his army continue its march till he came upon the camp of Fimbria at Thyatira not far from Pergamus, and pitched his own close beside it. The Sullan soldiers, far superior to the Fimbrians in number, discipline, leadership, and ability, looked with contempt on the dispirited and demoralized troops and their uncalled commander-in- chief. Desertions from the ranks of the Fimbrians became daily more numerous.
When Fimbria ordered an attack, the soldiers refused to fight against their fellow-citizens, or even to take the oath which he required that they would stand faithfully by each other in battle. An attempt to assassinate Sulla miscarried; at the conference which Fimbria requested Sulla did not make his appearance, but contented himself with suggesting to him through one of his officers a means of personal escape. Fimbria was of an insolent temperament, but he was no poltroon; instead of accepting the vessel which Sulla offered to him and fleeing to the barbarians, he went to Pergamus and fell on his own sword in the temple of Asklepios. Those who were most compromised in his army resorted to Mithradates or to the pirates, with whom they found ready reception; the main body placed itself under the orders of Sulla.
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Reference address : http://www.ellopos.net/elpenor/rome/4-08-east-king-mithradates.asp?pg=68