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
Meanwhile the confusion on the Asiatic continent had become still worse. Glabrio, who was to take up in the stead of Lucullus the chief command against Mithradates and Tigranes, had remained stationary in the west of Asia Minor and, while instigating the soldiers by various proclamations against Lucullus, had not entered on the supreme command, so that Lucullus was forced to retain it. Against Mithradates, of course, nothing was done; the Pontic cavalry plundered fearlessly and with impunity in Bithynia and Cappadocia. Pompeius had been led by the piratical war to proceed with his army to Asia Minor; nothing seemed more natural than to invest him with the supreme command in the Pontic-Armenian war, to which he himself had long aspired.
But the democratic party did not, as may be readily conceived, share the wishes of its general, and carefully avoided taking the initiative in the matter. It is very probable that it had induced Gabinius not to entrust both the war with Mithradates and that with the pirates from the outset to Pompeius, but to entrust the former to Glabrio; upon no account could it now desire to increase and perpetuate the exceptional position of the already too-powerful general. Pompeius himself retained according to his custom a passive attitude; and perhaps he would in reality have returned home after fulfilling the commission which he had received, but for the occurrence of an incident unexpected by all parties.
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Reference address : https://www.ellopos.net/elpenor/rome/5-03-fall-oligarchy-pompeius.asp?pg=35