There was left one way, namely through the Sequani, by which, on account of its narrowness, they could not pass without the consent of the Sequani. As they could not of themselves prevail on them, they send ambassadors to Dumnorix the Aeduan, that through his intercession they might obtain their request from the Sequani. Dumnorix, by his popularity and liberality, had great influence among the Sequani, and was friendly to the Helvetii, because out of that state he had married the daughter of Orgetorix; and, incited by lust of sovereignty, was anxious for a revolution, and wished to have as many states as possible attached to him by his kindness towards them. He, therefore, undertakes the affair, and prevails upon the Sequani to allow the Helvetii to march through their territories, and arranges that they should give hostages to each other—the Sequani not to obstruct the Helvetii in their march—the Helvetii, to pass without mischief and outrage.
It is again told Caesar that the Helvetii intend to march through the country of the Sequani and the Aedui into the territories of the Santones, which are not far distant from those boundaries of the Tolosates, which is a state in the Province.7 If this took place, he saw that it would be attended with great danger to the Province to have warlike men, enemies of the Roman people, bordering upon an open and very fertile tract of country. For these reasons he appointed Titus Labienus, his lieutenant, to the command of the fortification which he had made. He himself proceeds to Italy by forced marches, and there levies two legions, and leads out from winter-quarters three which were wintering around Aquileia, and with these five legions marches rapidly by the nearest route across the Alps into Further Gaul. Here the Centrones and the Graioceli and the Caturiges, having taken possession of the higher parts, attempt to obstruct the army in their march. After having routed these in several battles, he arrives in the territories of the Vocontii in the Further Province on the seventh day from Ocelum, which is the most remote town of the Hither Province; thence he leads his army into the country of the Allobroges, and from the Allobroges to the Segusiani. These people are the first beyond the Province on the opposite side of the Rhone.
The Helvetii had by this time led their forces over through the narrow defile and the territories of the Sequani, and had arrived at the territories of the Aedui, and were ravaging their lands. The Aedui, as they could not defend themselves and their possessions against them, send ambassadors to Caesar to ask assistance, pleading that they had at all times so well deserved of the Roman people, that their fields ought not to have been laid waste—their children carried off into slavery—their towns stormed, almost within sight of our army. At the same time the Ambarri, the friends and kinsmen of the Aedui, apprise Caesar that it was not easy for them, now that their fields had been devastated, to ward off the violence of the enemy from their towns: the Allobroges likewise, who had villages and possessions on the other side of the Rhone, betake themselves in flight to Caesar and assure him that they had nothing remaining, except the soil of their land. Caesar, induced by these circumstances, decides that he ought not to wait until the Helvetii, after destroying all the property of his allies, should arrive among the Santones.
There is a river called the Saône, which flows through the territories of the Aedui and Sequani into the Rhone with such incredible slowness, that it cannot be determined by the eye in which direction it flows. This the Helvetii were crossing by rafts and boats joined together. When Caesar was informed by spies that the Helvetii had already conveyed three parts of their forces across that river, but that the fourth part was left behind on this side of the Saône, he set out from the camp with three legions during the third watch, and came up with that division which had not yet crossed the river. Attacking them, encumbered with baggage, and not expecting him, he cut to pieces a great part of them; the rest betook themselves to flight, and concealed themselves in the nearest woods. That canton [which was cut down] was called the Tigurine; for the whole Helvetian state is divided into four cantons. This single canton having left their country, within the recollection of our fathers, had slain Lucius Cassius the consul, and had made his army pass under the yoke.8 Thus, whether by chance, or by the design of the immortal gods, that part of the Helvetian state which had brought a signal calamity upon the Roman people was the first to pay the penalty. In this Caesar avenged not only the public, but also his own personal wrongs, because the Tigurini had slain Lucius Piso the lieutenant [of Cassius], the grandfather of Lucius Calpurnius Piso, his [Caesar’s] father in-law, in the same battle as Cassius himself.
This battle ended, that he might be able to come up with the remaining forces of the Helvetii, he procures a bridge to be made across the Saône, and thus leads his army over. The Helvetii, confused by his sudden arrival, when they found that he had effected in one day what they themselves had with the utmost difficulty accomplished in twenty, namely, the crossing of the river, send ambassadors to him; at the head of which embassy was Divico, who had been commander of the Helvetii in the war against Cassius. He thus treats with Caesar:—that, “if the Roman people would make peace with the Helvetii they would go to that part and there remain, where Caesar might appoint and
