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
Macedonia and Greece - Italy - The East - Egypt - Spain - Africa
Macedonia and Greece were lost by the battle of Pharsalus. It is true that Cato, who had immediately on the news of the defeat evacuated Dyrrhachium, still held Corcyra, and Rutilius Lupus the Peloponnesus, during a time for the constitutional party. For a moment it seemed also as if the Pompeians would make a stand at Patrae in the Peloponnesus; but the accounts of the advance of Calenus sufficed to frighten them from that quarter. As little was there any attempt to maintain Corcyra. On the Italian and Sicilian coasts the Pompeian squadrons despatched thither after the victories of Dyrrhachium(36) had achieved not unimportant successes against the ports of Brundisium, Messana and Vibo, and at Messana especially had burnt the whole fleet in course of being fitted out for Caesar; but the ships that were thus active, mostly from Asia Minor and Syria, were recalled by their communities in consequence of the Pharsalian battle, so that the expedition came to an end of itself.
36. Cf. V. X. The Armies at Pharsalus
In Asia Minor and Syria there were at the moment no troops of either party, with the exception of the Bosporan army of Pharnaces which had taken possession, ostensibly on Caesar's account, of different regions belonging to his opponents. In Egypt there was still indeed a considerable Roman army, formed of the troops left behind there by Gabinius(37) and thereafter recruited from Italian vagrants and Syrian or Cilician banditti; but it was self-evident and was soon officially confirmed by the recall of the Egyptian vessels, that the court of Alexandria by no means had the intention of holding firmly by the defeated party or of even placing its force of troops at their disposal.
37. Cf. V. IV. And Brought Back by Gabinius
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Reference address : https://www.ellopos.net/elpenor/rome/5-10-brundisium-pharsalus-thapsus.asp?pg=92