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
Expeditions of Caesar to the Corn-Provinces
While thus in the western provinces the war after various critical vicissitudes was thoroughly decided at length in favour of Caesar, Spain and Massilia were subdued, and the chief army of the enemy was captured to the last man, the decision of arms had also taken place on the second arena of warfare, on which Caesar had found it necessary immediately after the conquest of Italy to assume the offensive
Sardinia Occupied - Sicily Occupied
We have already mentioned that the Pompeians intended to reduce Italy to starvation. They had the means of doing so in their hands. They had thorough command of the sea and laboured with great zeal everywhere--in Gades, Utica, Messana, above all in the east--to increase their fleet. They held moreover all the provinces, from which the capital drew its means of subsistence: Sardinia and Corsica through Marcus Cotta, Sicily through Marcus Cato, Africa through the self-nominated commander-in-chief Titus Attius Varus and their ally Juba king of Numidia It was indispensably needful for Caesar to thwart these plans of the enemy and to wrest from them the corn-provinces.
Quintus Valerius was sent with a legion to Sardinia and compelled the Pompeian governor to evacuate the island. The more important enterprise of taking Sicily and Africa from the enemy was entrusted to the young Gaius Curio with the assistance of the able Gaius Caninius Rebilus, who possessed experience in war. Sicily was occupied by him without a blow; Cato, without a proper army and not a man of the sword, evacuated the island, after having in his straightforward manner previously warned the Siceliots not to compromise themselves uselessly by an ineffectual resistance.
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Reference address : https://www.ellopos.net/elpenor/rome/5-10-brundisium-pharsalus-thapsus.asp?pg=48