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
Reorganization of the Coalition in Africa
All the more serious was the position of things in Africa, where the constitutional party had from the outset of the civil war ruled absolutely and had continually augmented their power. Down to the battle of Pharsalus king Juba had, properly speaking, borne rule there; he had vanquished Curio, and his flying horsemen and his numberless archers were the main strength of the army; the Pompeian governor Varus played by his side so subordinate a part that he even had to deliver those soldiers of Curio, who had surrendered to him, over to the king, and had to look on while they were executed or carried away into the interior of Numidia. After the battle of Pharsalus a change took place. With the exception of Pompeius himself, no man of note among the defeated party thought of flight to the Parthians.
As little did they attempt to hold the sea with their united resources; the warfare waged by Marcus Octavius in the Illyrian waters was isolated, and was without permanent success. The great majority of the republicans as of the Pompeians betook themselves to Africa, where alone an honourable and constitutional warfare might still be waged against the usurper. There the fragments of the army scattered at Pharsalus, the troops that had garrisoned Dyrrhachium, Corcyra, and the Peloponnesus, the remains of the Illyrian fleet, gradually congregated; there the second commander-in-chief Metellus Scipio, the two sons of Pompeius, Gnaeus and Sextus, the political leader of the republicans Marcus Cato, the able officers Labienus, Afranius, Petreius, Octavius and others met.
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Reference address : https://www.ellopos.net/elpenor/rome/5-10-brundisium-pharsalus-thapsus.asp?pg=114