After this a decree was passed by the senate, that one legion should be sent by Pompey, and another by Caesar, to the Parthian war. But these two legions were evidently drawn from Caesar alone.
Fit deinde senatus consultum, ut ad bellum Parthicum legio una a Cn. Pompeio, altera a C. Caesare mitteretur; neque obscure duae legiones uni detrahuntur.
For the first legion which Pompey sent to Caesar, he gave Caesar, as if it belonged to himself, though it was levied in Caesar's province.
Nam Cn. Pompeius legionem primam, quam ad Caesarem miserat, confectam ex delectu provinciae Caesaris, eam tamquam ex suo numero dedit.
Caesar, however, though no one could doubt the design of his enemies, sent the legion back to Cneius Pompey, and in compliance with the decree of the senate, ordered the fifteenth, belonging to himself, and which was quartered in Cisalpine Gaul, to be delivered up. In its room he sent the thirteenth into Italy, to protect the garrisons from which he had drafted the fifteenth.
Caesar tamen, cum de voluntate minime dubium esset adversariorum suorum, Pompeio legionem remisit et suo nomine quintam decimam, quam in Gallia citeriore habuerat, ex senatus consulto iubet tradi. In eius locum tertiam decimam legionem in Italiam mittit quae praesidia tueretur, ex quibus praesidiis quinta decima deducebatur.
He disposed his army in winter quarters, placed Caius Trebonius, with four legions among the Belgae, and detached Caius Fabius, with four more, to the Aedui;
Ipse exercitui distribuit hiberna: C. Trebonium cum legionibus quattuor in Belgio collocat, C. Fabium cum totidem in Aeduos deducit.
for he thought that Gaul would be most secure, if the Belgae, a people of the greatest valor, and the Aedui, who possessed the most powerful influence, were kept in awe by his armies.
Sic enim existimabat tutissimam fore Galliam, si Belgae, quorum maxima virtus, Aedui, quorum auctoritas summa esset, exercitibus continerentur. Ipse in Italiam profectus est.