After this success Caesar wanted to pursue the remaining forces of the Helvetii. He therefore built a bridge over the Saône and led his army across. … - Gaius Julius Caesar

He therefore built a bridge over the Saône and led his army across. Alarmed by his unexpected arrival and seeing that he had effected in one day the crossing which they had the greatest difficulty in accomplishing in twenty days,

"Ariovistus did not come to an engagement, he discovered this to be the reason — that among the Germans it was the custom for their matrons to pronounce from lots and divination whether it were expedient that the battle should be engaged in or not; that they had said, "that it was not the will of heaven that the Germans should conquer, if they engaged in battle before the new moon.

Veni, vidi, vici. (I came, I saw, I conquered.)

The ground in front of his camp was ideal for deploying the army for action. The low hill on which the camp stood was of just the right width, on the side facing the enemy, for the legions to occupy in battle formation; on each flank it descended steeply to the plain, while in front it formed a slight ridge and then sloped gently down. On either side of the hill Caesar had a trench dug, running for about six hundred and fifty yards at right angles to the line along which the troops would be drawn up, and placed redoubts and artillery at both ends of each trench, to prevent the enemy from using their numerical superiority to envelop his men from the flanks while they were fighting. He left the two newly enrolled legions in camp, to be used as reinforcements wherever they were needed, and drew up the other six in front in line of battle. The enemy also had marched out and deployed for action.