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
The Preparations for War
The management of the military preparations in the Macedonian camp was in the hands of Pompeius the commander-in-chief. His position, always troublesome and galling, had become still worse through the unfortunate events of 705. In the eyes of his partisans he was mainly to blame for this result. This judgment was in various respects not just. A considerable part of the misfortunes endured was to be laid to the account of the perversity and insubordination of the lieutenant-generals, especially of the consul Lentulus and Lucius Domitius; from the moment when Pompeius took the head of the army, he had led it with skill and courage, and had saved at least very considerable forces from the shipwreck; that he was not a match for Caesar's altogether superior genius, which was now recognized by all, could not be fairly made matter of reproach to him.
But the result alone decided men's judgment. Trusting to the general Pompeius, the constitutional party had broken with Caesar; the pernicious consequences of this breach recoiled upon the general Pompeius; and, though owing to the notorious military incapacity of all the other chiefs no attempt was made to change the supreme command yet confidence at any rate in the commander-in-chief was paralyzed. To these painful consequences of the defeats endured were added the injurious influences of the emigration. Among the refugees who arrived there were certainly a number of efficient soldiers and capable officers, especially those belonging to the former Spanish army; but the number of those who came to serve and fight was just as small as that of the generals of quality who called themselves proconsuls and imperators with as good title as Pompeius, and of the genteel lords who took part in active military service more or less reluctantly, was alarmingly great.
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Reference address : https://www.ellopos.net/elpenor/rome/5-10-brundisium-pharsalus-thapsus.asp?pg=60