Note 218 — Chapter IV · CAMPAIGN AGAINST ARIOVISTUS. (Year of Rome 696.) (Book I. of the “Commentaries.”)

There has been much discussion on the meaning of the words millium amplius quinquaginta circuitu. Some pretend that the number of fifty miles means the whole distance, and that thus Cæsar would have taken seven days to travel fifty miles, which would make about seven kilomètres a day: this supposition is inadmissible. Others pretend, on the contrary, that we must add fifty miles to the direct distance. This last interpretation is refuted by a passage in the “Commentaries” (De Bello Civili, I. 64). We read there, Ac tantum fuit in militibus studii, ut, millium vi. ad iter addito circuito, &c. This shows that when Cæsar means to speak of a turn of road, to be added to the total length of the route, he is careful to indicate it. We consider it more simple, therefore, to admit that the fifty miles are only a part of the distance performed during the seven days’ march; that is, that after making a circular détour of fifty miles, which required three or four days, Cæsar had still to march some time before he met the enemy, following the direct road from Besançon to the Rhine. The study of the ground completely justifies this view, for it was sufficient for Cæsar to make a circuit of fifty miles (or seventy-five kilomètres) to turn the mass of mountains which extends from Besançon to Montbéliard.