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
Capitulation of the Pompeians
No bravery and no fidelity could longer avert the inevitable capitulation (2 Aug. 705). Caesar granted to officers and soldiers their life and liberty, and the possession of the property which they still retained as well as the restoration of what had been already taken from them, the full value of which he undertook personally to make good to his soldiers; and not only so, but while he had compulsorily enrolled in his army the recruits captured in Italy, he honoured these old legionaries of Pompeius by the promise that no one should be compelled against his will to enter Caesar's army. He required only that each should give up his arms and repair to his home. Accordingly the soldiers who were natives of Spain, about a third of the army, were disbanded at once, while the Italian soldiers were discharged on the borders of Transalpine and Cisalpine Gaul.
Further Spain Submits
Hither Spain on the breaking up of this army fell of itself into the power of the victor. In Further Spain, where Marcus Varro held the chief command for Pompeius, it seemed to him, when he learned the disaster of Ilerda, most advisable that he should throw himself into the insular town of Gades and should carry thither for safety the considerable sums which he had collected by confiscating the treasures of the temples and the property of prominent Caesarians, the not inconsiderable fleet which he had raised, and the two legions entrusted to him. But on the mere rumour of Caesar's arrival the most notable towns of the province which had been for long attached to Caesar declared for the latter and drove away the Pompeian garrisons or induced them to a similar revolt; such was the case with Corduba, Carmo, and Gades itself. One of the legions also set out of its own accord for Hispalis, and passed over along with this town to Caesar's side. When at length even Italica closed its gates against Varro, the latter resolved to capitulate.
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Reference address : https://www.ellopos.net/elpenor/rome/5-10-brundisium-pharsalus-thapsus.asp?pg=44