Four English battalions, under Colonel Sabine, crossed the stream and attacked the French forces in the village, consisting of seven battalions under Pfiffer, while the cavalry crossed the rivulets higher up, and came down on the flank of the village. The result was three French battalions were surrounded and made prisoners, and the other four routed and dispersed.

The French generals now saw that there was no longer a possibility of avoiding a general action. Vendome would have stood on the defensive, which, as he had the Norken with its steep and difficult ground in his front, was evidently the proper tactics to have pursued. He was, however, overruled by the Duke of Burgundy and the other generals, and the French accordingly descended from the plateau, crossed the Norken, and advanced to the attack. The armies were of nearly equal strength, the French having slightly the advantage. The allies had 112 battalions and 180 squadrons, in all 80,000 men; the French, 121 battalions and 198 squadrons, in all 85,000 men.

The French again lost time, and fell into confusion as they advanced, owing to Marshal Vendome's orders being countermanded by the Duke of Burgundy, who had nominally the chief command, and who was jealous of Vendome's reputation. Marlborough divined the cause of the hesitation, and perceiving that the main attack would be made on his left, which was posted in front of the Castle of Bevere, half a mile from the village of the same name; ordered twelve battalions of infantry under Cadogan to move from his right at Eynes to reinforce his left.

He then lined all the hedges with infantry, and stationing twenty British battalions under Argyle with four guns in reserve, awaited the attack. But few guns were employed on either side during the battle, for artillery in those days moved but slowly, and the rapid movements of both armies had left the guns far behind.

The French in their advance at once drew in four battalions, posted at Groenvelde, in advance of Eynes, and then bearing to their right, pressed forward with such vigour that they drove back the allied left. At this point were the Dutch and Hanoverian troops. Marlborough now dispatched Eugene to take command of the British on the right, directed Count Lottum to move from the centre with twenty battalions to reinforce that side of the fight, and went himself to restore the battle on the left.

Eugene, with his British troops, were gradually but steadily, in spite of their obstinate resistance, being driven back, when Lottum's reinforcements arrived, and with these Eugene advanced at once, and drove back the enemy. As these were in disorder, General Natzmer, at the head of the Prussian cuirassiers, charged them and drove them back, until he himself was fallen upon by the French horse guards in reserve, while the infantry's fire from the hedgerows mowed down the cuirassiers. So dreadful was the fire that half the Prussian cavalry were slain, and the rest escaped with difficulty, hotly pursued by the French household troops.

An even more desperate conflict was all this time raging on the left. Here Marlborough placed himself at the head of the Dutch and Hanoverian battalions, and led them back against the French, who were advancing with shouts of victory, and desperate struggles ensued. Alison in his history says:

"The ground on which the hostile lines met was so broken, that the battle in that quarter turned almost into a series of partial conflicts and even personal encounters. Every bridge, every ditch, every wood, every hamlet, every enclosure, was obstinately contested, and so incessant was the roll of musketry, and so intermingled did the hostile lines become, that the field, seen from a distance, appeared an unbroken line of flame. A warmer fire, a more desperate series of combats, was never witnessed in modern warfare. It was in great part conducted hand to hand, like the battles of antiquity, of which Livy and Homer have left such graphic descriptions. The cavalry could not act, from the multitude of hedges and copses which intersected the theatre of conflict. Breast to breast, knee to knee, bayonet to bayonet, they maintained the fight on both sides with the most desperate resolution. If the resistance, however, was obstinate, the attack was no less vigorous, and at length the enthusiastic ardour of the French yielded to the steady valour of the Germans. Gradually they were driven back, literally at the bayonet's point; and at length, resisting at every point, they yielded all the ground they had won at the commencement of the action. So, gradually they were pushed back as far as the village of Diepenbech, where so stubborn a stand was made that the allies could no longer advance."

Overkirk had now got the rear of the army across the river, and the duke, seeing that the Hill of Oycke, which flanked the enemy's position, was unoccupied by them, directed the veteran general with his twenty Dutch and Danish battalions to advance and occupy it. Arrived there, he swung round the left of his line, and so pressed the French right, which was advanced beyond their outer bounds into the little plain of Diepenbech. The duke commanded Overkirk to press round still further to his left by the passes of Mullem and the mill of Royeghem, by which the French sustained their communication with the force still on the plateau beyond the Norken; and Prince Eugene to further extend his right so as to encompass the mass of French crowded in the plain of Diepenbech.

The night was falling now, and the progress of the allies on either flank could be seen by the flashes of fire. Vendome, seeing the immense danger in which his right and centre were placed, endeavoured to bring up his left, hitherto intact; but the increasing darkness, the thick enclosures, and the determined resistance of Eugene's troops, prevented him from carrying out his intention. So far were the British wings extended round the plain of Diepenbech, that they completely enclosed it, and Eugene's and Overkirk's men meeting fought fiercely, each believing the other to be French. The mistake was discovered, and to prevent any further mishap of this kind in the darkness, the whole army was ordered to halt where it was and wait till morning. Had the daylight lasted two hours longer, the whole of the French army would have been slain or taken prisoners; as it was, the greater portion made their way through the intervals of the allied army around them, and fled to Ghent. Nevertheless, they lost 6,000 killed and wounded, and 9,000 prisoners, while many thousands of the fugitives made for the French frontier. Thus the total loss to Vendome exceeded 20,000 men, while the allies lost in all 5000.