As the French king took it for granted that the confederates would have a superiority of numbers in the field, and was well acquainted with the enterprising genius of their chief, he ordered a new line to be drawn between Lys and the Scheld; he caused a disposition to be made for covering Dunkirk, Ypres, Tournay, and Namur; and laid injunctions on his general to act solely on the defensive.
Meanwhile, the confederates formed two armies in the Netherlands.
The first consisted of seventy battalions of infantry, and eighty-two squadrons of horse and dragoons, chiefly English and Scots, encamped at AErseele, Caneghem, and Wouterghem, between Thield and Deynse, to be commanded by the king in person, assisted by the old prince of Vaudemont.

The other army, composed of sixteen battalions of foot and one hundred and thirty squadrons of horse, encamped at Zellich and Hamme, on the road from Brussels to Dendermonde, under the command of the elector of Bavaria, seconded by the duke of Holstein-Ploen.
Major-general Ellemberg was posted near Dixmuyde with twenty battalions and ten squadrons; and another body of Brandenburg and Dutch troops, with a reinforcement from Liege, lay encamped on the Mehaigne, under the conduct of the baron de Heyden, Lieutenant-general of Brandenburgh, and the count de Berlo, general of the Liege cavalry.

King-William arrived in the camp on the fifth clay of July, and remained eight days at AErseele.

Then he marched to Bekelar, while Villeroy retired behind his lines between Menin and Ypres, after having detached ten thousand men to reinforce Boufflers, who had advanced to Pont d'Espieres; but he too retreating within his lines, the elector of Bavaria passed the Scheld and took post at Kirkhoven; at the same time the body under Heyden advanced towards Namur.
WILLIAM UNDERTAKES THE SIEGE OF NAMUR.
The king of England having by his motions drawn the forces of the enemy on the side of Flanders, directed the baron de Heyden and the earl of Athlone, who commanded forty squadrons from the camp of the elector of Bavaria, to invest Namur, and this service was performed on the third day of July; but as the place was not entirely surrounded, mareschal Boufflers threw himself into it with such a reinforcement of dragoons as augmented the garrison to the number of fifteen thousand chosen men.
King William and the elector brought up the rest of the forces, which encamped on both sides of the Sambre and the Mose, and the lines of circumvallation were begun on the sixth day of July under the direction of the celebrated engineer, general Coehorn.

The place was formerly very strong, both by situation and art; but the French, since its last reduction, had made such additional works that both the town and citadel seemed impregnable.