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
But, as he with the view of not giving his antagonists occasion to complain had hitherto brought no troops to Ravenna itself, he could for the present do nothing but despatch orders to his whole force to set out with all haste; and he had to wait till at least the one legion stationed in Upper Italy reached Ravenna. Meanwhile he sent an ultimatum to Rome, which, if useful for nothing else, by its extreme submissiveness still farther compromised his opponents in public opinion, and perhaps even, as he seemed himself to hesitate, induced them to prosecute more remissly their preparations against him.
In this ultimatum Caesar dropped all the counter-demands which he formerly made on Pompeius, and offered on his own part both to resign the governorship of Transalpine Gaul, and to dismiss eight of the ten legions belonging to him, at the term fixed by the senate; he declared himself content, if the senate would leave him either the governorship of Cisalpine Gaul and Illyria with one, or that of Cisalpine Gaul alone with two, legions, not, forsooth, up to his investiture with the consulship, but till after the close of the consular elections for 706.
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Reference address : https://www.ellopos.net/elpenor/rome/5-09-crassus-joint-rulers.asp?pg=49