The entrance to the valley by which Turenne was to fall upon their left flank was closed at its mouth by very strong intrenchments, and it was behind this that the main body of horse was posted.
To gain his point of attack Turenne had to make a very wide circuit, and started at break of day on the 3rd of August.

It was arranged that Enghien, who remained with de Gramont, should not attack until three hours before sunset, in order to give Turenne time to attack at the same hour.

At the time agreed upon, Enghien sent forward two battalions to begin the attack.

The regiments of Conde and Mazarin were to follow, while the duke held two others in reserve.

In order to get at the enemy the assailants were forced to climb a very steep ascent, and cross a vineyard intersected by many walls four feet high facing the terrace on which the vines grew.