The position occupied by the Elector of Bavaria and Marshal Villeroi was so strong that it was regarded as impregnable, and in truth it was so to a front attack. With its right resting on Marche aux Dames on the Meuse, it stretched through Leau to the strong and important fortress of Antwerp. This line was long, and of course liable to be broken through at points; but such was the skill with which every vulnerable point had been strengthened and fortified by the French engineers, that it was no easy matter to say where an impression could be made. Wherever a marsh or a stream intervened, the most skilful use had been made of it; while forts and redoubts, plentifully mounted with heavy cannon, both commanded all the approaches to the lines, and formed so many points d'appui to its defenders in case of disaster. Such a position, defended by seventy thousand men, directed by able generals, might well be deemed impregnable. But Marlborough, with an inferior force, resolved to attempt it. In doing so, however, he had difficulties more formidable to overcome than even the resistance of the enemy in front; the timidity of the authorities at the Hague, the nervousness and responsibility of the Dutch generals, were more to be dreaded than Villeroi's redoubts. It required all the consummate address of the English general, aided by the able co-operation of General Overkirk, to get liberty from the Dutch authorities to engage in any offensive undertaking. At length, however, after infinite difficulty, a council of war, at headquarters, agreed to support any undertaking which might be deemed advisable; and Marlborough instantly set about putting his design in execution.
The better to conceal the real point of attack, he gave out that a march to the Moselle was to be immediately undertaken; and to give a colour to the report, the corps which had been employed in the siege of Huys was not brought forward to the front. At the same time Overkirk was detached to the Allied left towards Bourdine, and Marlborough followed with a considerable force, ostensibly to support him. So completely was Villeroi imposed upon, that he drew large reinforcements from the centre to his extreme right; and soon forty thousand men were grouped round the sources of the Little Gheet on his extreme right. By this means the centre was seriously weakened; and Marlborough instantly assembled, with every imaginable precaution to avoid discovery, all his disposable forces to attack the weakened part of the lines. The corps hitherto stationed on the Meuse was silently brought up to the front; Marlborough put himself at the head of his own English and German troops, whom he had carried with him from the Moselle; and at eight at night, on the 17th July, the whole began to march, all profoundly ignorant of the service on which they were to be engaged. Each trooper was ordered to carry a truss of hay at his saddle-bow, as if a long march was in contemplation. At the same instant on which the columns under Marlborough's orders commenced their march, Overkirk repassed the Mehaigne on the left, and, hid by darkness, fell into the general line of the advance of the Allied troops.
No fascines or gabions had been brought along to pass the ditch, for fear of exciting alarm in the lines. The trusses of hay alone were trusted to for that purpose, which would be equally effectual, and less likely to awaken suspicion. At four in the morning, the heads of the columns, wholly unperceived, were in front of the French works, and, covered by a thick fog, traversed the morass, passed the Gheet despite its steep banks, carried the castle of Wange, and, rushing forward with a swift pace, crossed the ditch on the trusses of hay, and, in three weighty columns, scaled the rampart, and broke into the enemy's works. Hitherto entire success had attended this admirably planned attack; but the alarm was now given; a fresh corps of fifteen thousand men, under M. D'Allegré, hastily assembled, and a heavy fire was opened upon the Allies, now distinctly visible in the morning light, from a commanding battery. Upon this, Marlborough put himself at the head of Lumley's English horse, and, charging vigorously, succeeded, though not till he had sustained one repulse, in breaking through the line thus hastily formed. In this charge the Duke narrowly escaped with his life, in a personal conflict with a Bavarian officer. The Allies now crowded in, in great numbers, and the French, panic-struck, fled on all sides, abandoning the whole centre of their intrenchments to the bold assailants. Villeroi, who had become aware, from the retreat of Overkirk in his front, that some attack was in contemplation, but ignorant where the tempest was to fall, remained all night under arms. At length, attracted by the heavy fire, he approached the scene of action in the centre, only in time to see that the position was broken through, and the lines no longer tenable. He drew off his whole troops accordingly, and took up a new position, nearly at right angles to the former, stretching from Elixheim towards Tirlemont. It was part of the design of the Duke to have intercepted the line of retreat of the French, and prevented them from reaching the Dyle, to which they were tending; but such was the obstinacy and slowness of the Dutch generals, that nothing could persuade them to make any further exertion, and, in defiance of the orders and remonstrances alike of Marlborough and Overkirk, they pitched their tents, and refused to take any part in the pursuit. The consequence was, that Villeroi collected his scattered forces, crossed the Dyle in haste, and took up new ground, about eighteen miles in the rear, with his left sheltered by the cannon of Louvain. But, though the disobedience and obstinacy of the Dutch thus intercepted Marlborough in the career of victory, and rendered his success much less complete than it otherwise would have been, yet had a mighty blow been struck, reflecting the highest credit on the skill and resolution of the English general. The famous lines, on which the French had been labouring for months, had been broken through and carried, during a nocturnal conflict of a few hours; they had lost all their redoubts and ten pieces of cannon, with which they were armed; M. D'Allegré, with twelve hundred prisoners, had been taken; and the army which lately besieged Liege and threatened Maestricht, was now driven back, defeated and discouraged, to seek refuge under the cannon of Louvain.
Overkirk, who had so ably co-operated with Marlborough in this glorious victory, had the magnanimity as well as candour, in his despatch to the States-general, to ascribe the success which had been gained entirely to the skill and courage of the English general.5 But the Dutch generals, who had interrupted his career of success, had the malignity to charge the consequences of their misconduct on his head, and even carried their effrontery so far as to accuse him of supineness in not following up his success, and cutting off the enemy's retreat to the Dyle, when it was themselves who had refused to obey his orders to do so. Rains of extraordinary severity fell from the 19th to the 23d July, which rendered all offensive operations impracticable, and gave Villeroi time, of which he ably availed himself, to strengthen his position behind the Dyle to such a degree, as to render it no longer assailable with any prospect of success. The precious moment, when the enemy might have been driven from it in the first tumult of success, had been lost.
The subsequent success in the Flemish campaign by no means corresponded