Now what had happened to the fourth and fifth columns under Kinsky and the Arch-Duke? I must describe their fortunes, show why they had failed to come up, and thus complete the picture of the general advance from the Scheldt, before I turn to conclude the explanation of the disaster by detailing the further adventures of Clerfayt after he had crossed the Lys. (A) THE FOURTH COLUMN UNDER KINSKY Kinsky with his 11,000 men had been delayed, as we have seen, at Froidmont by the message which the Arch-Duke had sent him from St Amand, to the effect that the fifth column could not hope to be at Pont-à-Marcq before dawn upon the 17th. At the moment, therefore, when in the small hours of Saturday the 17th Otto and the Duke of York started out simultaneously from Bailleul and Templeuve, Kinsky was still pinned to Froidmont. But he knew that the Arch-Duke had started with his great column some time after dark in the Friday night from St Amand, and when he estimated that they had proceeded far enough along the road to Pont-à-Marcq to be up level with him upon his left, Kinsky set his men in march and made for the Bridge of Bouvines, which was the crossing of the Marque immediately in front of him. The Bridge of Bouvines lay right in front of the great French camp. It was strongly held, and the hither side of the river, as Kinsky approached it, was found to be entrenched. His men drove the French from those entrenchments, they retired over the bridge, and as they retired they broke it down. Upon the far side of the river in front of their camp the French further established a battery of heavy guns upon that slight slope which is now crowned by the Fort of Sainghin, and Kinsky could not force the passage until the fifth column, or at any rate the head of it, should begin to appear upon his left.