20After this achievement, Caesar left his forces among the Sequani to spend the winter,34The winter of 58-57 B.C. while he himself, desirous of giving attention to matters at Rome, came down to Gaul along the Po,35Cf. Caesar, B. G. i. 54: ipse in citeriorem Galliam ad conventus agendos profectus est. which was a part of the province assigned to him; for the river called Rubicon separates the rest of Italy from Cisalpine Gaul.