As the cavalry fell back in disorder, Gustavus led his horse, who had just returned from the pursuit of Pappenheim, against them. The shock was irresistible, and Furstenberg's horse were driven headlong from the field. But the Imperialist infantry, led by Tilly himself, were now close at hand, and the roar of musketry along the whole line was tremendous, while the artillery on both sides played unceasingly. Just as the battle was at the hottest the Swedish reserve came up to the assistance of the first line, and Sir John Hepburn led the Green Brigade through the intervals of the Swedish regiments into action. Lord Reay's regiment was in front, and Munro, leading it on, advanced against the solid Imperialist columns, pouring heavy volleys into them. When close at hand the pikemen passed through the intervals of the musketeers and charged furiously with levelled pikes, the musketeers following them with clubbed weapons. The gaps formed by the losses of the regiment at New Brandenburg and the other engagements had been filled up, and two thousand strong they fell upon the Imperialists. For a few minutes there was a tremendous hand-to-hand conflict, but the valour and strength of the Scotch prevailed, and the regiment was the first to burst its way through the ranks of the Imperialists, and then pressed on to attack the trenches behind, held by the Walloon infantry. While the battle was raging in the plain the Swedish cavalry, after driving away Furstenberg's horse, swept round and charged the eminence in the rear of the Imperialists, cutting down the artillerymen and capturing the cannon there. These were at once turned upon the masses of Imperialist infantry, who thus, taken between two fires--pressed hotly by the pikemen in front, mown down by the cannon in their rear--lost heart and fled precipitately, four regiments alone, the veterans of Furstenberg's infantry, holding together and cutting their way through to the woods in the rear of their position. The slaughter would have been even greater than it was, had not the cloud of dust and smoke been so thick that the Swedes were unable to see ten yards in front of them. The pursuit was taken up by their cavalry, who pressed the flying Imperialists until nightfall. So complete was the defeat that Tilly, who was badly wounded, could only muster 600 men to accompany him in his retreat, and Pappenheim could get together but 1400 of his horsemen. Seven thousand of the Imperialists were killed, 5000 were wounded or taken prisoners. The Swedes lost but 700 men, the Saxons about 2000. The Swedes that night occupied the Imperial tents, making great bonfires of the broken wagons, pikes, and stockades. A hundred standards were taken. Tilly had fought throughout the battle with desperate valour. He was ever in the van of his infantry, and three times was wounded by bullets and once taken prisoner, and only rescued after a desperate conflict.