The French army had been concentrated at Mons, on the south-west of the Netherlands. It thence advanced northward towards Brussels. Fearing for the capital, Marlborough took up a position to cover it, but suddenly the French marched off eastward, and threatened Louvain. This was, however, but a feint. The real intention of the French was to act upon the western frontier, upon the river Scheldt. The Dutch had made themselves highly unpopular in the Netherlands since they had had possession of that province; the disaffected inhabitants of the great towns on the Scheldt had opened correspondence with Vendome, and were prepared to surrender their cities to him. Having therefore drawn Marlborough towards Louvain, he suddenly marched westward to Alost, across the front of the English army, sending forward on his march detachments, to which Ghent and Bruges surrendered without a struggle. As the town of Oudenarde, somewhat higher up the river, would complete the security of these new acquisitions, it was determined to besiege it. Marlborough had followed close upon the heels of the French, circling round Brussels so as to defend the capital. He had not ceased to urge Eugene to join him with his troops, which, according to agreement, should have been with him many weeks before. The delay was no fault of the Prince's; he was already hurrying to join Marlborough, when, hearing that it was his intention to fight a battle in defence of Oudenarde, and unable to bring up his troops, he hastened forward alone and joined the English army. Between Marlborough's army and Oudenarde ran the river Dender, which the French determined to hold to cover the siege. Alost, which lies a little to the north of Oudenarde, they already possessed; at about an equal distance to the south, also on the river Dender, was the entrenched camp of Lessines. Could they occupy this they would be in a good position to cover the siege. Marlborough foresaw their intention, and determined to forestall them. Although the river between Lessines and Alost makes a considerable curve, and Marlborough, on the convex side of it, had almost twice the distance to traverse that the French had, he pushed on with such rapidity that he secured Lessines and the passage of the river before the French columns appeared in sight. It was now evident to the French generals that Marlborough intended to fight. They drew in their detachments, and marched rapidly to cross the Scheldt at Gavre, to the north of Oudenarde. Marlborough marched direct upon that city, so that the converging lines of march would speedily meet. It was known that there was much disputing and ill-feeling between Vendome and the Duke of Burgundy, and that the latter Prince intended, if possible, to avoid an engagement. With all speed Marlborough sent forward General Cadogan to secure the passage of the river, and prepare bridges for his army. After he had performed this duty, Cadogan rode