On the left, the Saxons formed at a considerable distance from the Swedes,—by the advice of Gustavus, which was justified by the event. The order of battle had been arranged between the Elector and his field-marshal, and the king was content with merely signifying his approval. He was anxious apparently to separate the Swedish prowess from that of the Saxons, and fortune did not confound them.
The enemy was drawn up under the heights towards the west, in one immense line, long enough to outflank the Swedish army,—the infantry being divided in large battalions, the cavalry in equally unwieldy squadrons. The artillery being on the heights behind, the range of its fire was over the heads of his men. From this position of his artillery, it was evident that Tilly’s purpose was to await rather than to attack the enemy; since this arrangement rendered it impossible for him to do so without exposing his men to the fire of his own cannons. Tilly himself commanded the centre, Count Furstenberg the right wing, and Pappenheim the left. The united troops of the Emperor and the League on this day did not amount to 34,000 or 35,000 men; the Swedes and Saxons were about the same number. But had a million been confronted with a million it could only have rendered the action more bloody, certainly not more important and decisive. For this day Gustavus had crossed the Baltic, to court danger in a distant country, and expose his crown and life to the caprice of fortune. The two greatest generals of the time, both hitherto invincible, were now to be matched against each other in a contest which both had long avoided; and on this field of battle the hitherto untarnished laurels of one leader must droop for ever. The two parties in Germany had beheld the approach of this day with fear and trembling; and the whole age awaited with deep anxiety its issue, and posterity was either to bless or deplore it for ever.
Tilly’s usual intrepidity and resolution seemed to forsake him on this eventful day. He had formed no regular plan for giving battle to the King, and he displayed as little firmness in avoiding it. Contrary to his own judgment, Pappenheim had forced him to action. Doubts which he had never before felt, struggled in his bosom; gloomy forebodings clouded his ever-open brow; the shade of Magdeburg seemed to hover over him.
A cannonade of two hours commenced the battle; the wind, which was from the west, blew thick clouds of smoke and dust from the newly-ploughed and parched fields into the faces of the Swedes. This compelled the king insensibly to wheel northwards, and the rapidity with which this movement was executed left no time to the enemy to prevent it.
Tilly at last left his heights, and began the first attack upon the Swedes; but to avoid their hot fire, he filed off towards the right, and fell upon the Saxons with such impetuosity that their line was broken, and the whole army thrown into confusion. The Elector himself retired to Eilenburg, though a few regiments still maintained their ground upon the field, and by a bold stand saved the honour of Saxony. Scarcely had the confusion began ere the Croats commenced plundering, and messengers were despatched to Munich and Vienna with the news of the victory.
Pappenheim had thrown himself with the whole force of his cavalry upon the right wing of the Swedes, but without being able to make it waver. The king commanded here in person, and under him General Banner. Seven times did Pappenheim renew the attack, and seven times was he repulsed. He fled at last with great loss, and abandoned the field to his conqueror.
In the mean time, Tilly, having routed the remainder of the Saxons, attacked with his victorious troops the left wing of the Swedes. To this wing the king, as soon as he perceived that the Saxons were thrown into disorder, had, with a ready foresight, detached a reinforcement of three regiments to cover its flank, which the flight of the Saxons had left exposed. Gustavus Horn, who commanded here, showed the enemy’s cuirassiers a spirited resistance, which the infantry, interspersed among the squadrons of horse, materially assisted. The enemy were already beginning to relax the vigour of their attack, when Gustavus Adolphus appeared to terminate the contest. The left wing of the Imperialists had been routed; and the king’s division, having no longer any enemy to oppose, could now turn their arms wherever it would be to the most advantage. Wheeling, therefore, with his right wing and main body to the left, he attacked the heights on which the enemy’s artillery was planted. Gaining possession of them in a short time, he turned upon the enemy the full fire of their own cannon.