A tremendous circuit had to be made.

He forded the Moselle six leagues above Coblenz, the bridges over the Rhine being all in possession of the enemy, marched up into Holland, and obtained permission from the king to cross at Wesel, which he reached after fourteen days' march.

Crossing the Rhine on the 15th of July he marched through the country of La Mark, and through Westphalia, and on the 10th of August joined the Swedes under General Wrangel, who had received news of his coming, and had intrenched himself so strongly that the enemy, who had arrived before him, did not venture to attack him.

The enemy now fell back at once and encamped near Freiburg.

Their army was superior in force to that of the allies, they having fourteen thousand horse and ten thousand foot, while the allies had but ten thousand horse and seven thousand foot.