The disgrace of this day is to be ascribed principally to three mistakes;his planting the cannon on the hills behind him, his afterwards abandoning these heights, and his allowing the enemy, without opposition, to form in order of battle. But how easily might those mistakes have been rectified, had it not been for the cool presence of mind and superior genius of his adversary!
Tilly fled from Halle to Halberstadt, where he scarcely allowed time for the cure of his wounds, before he hurried towards the Weser to recruit his force by the imperial garrisons in Lower Saxony.
The Elector of Saxony had not failed, after the danger was over, to appear in Gustavus's camp. The king thanked him for having advised a battle;and the Elector, charmed at his friendly reception, promised him, in the first transports of joy, the Roman crown. Gustavus set out next day for Merseburg, leaving the Elector to recover Leipzig.
Five thousand Imperialists, who had collected together after the defeat, and whom he met on his march, were either cut in pieces or taken prisoners, of whom again the greater part entered into his service.
Merseburg quickly surrendered; Halle was soon after taken, whither the Elector of Saxony, after making himself master of Leipzig, repaired to meet the king, and to concert their future plan of operations.
The victory was gained, but only a prudent use of it could render it decisive.
The imperial armies were totally routed, Saxony free from the enemy, and Tilly had retired into Brunswick. To have followed him thither would have been to renew the war in Lower Saxony, which had scarcely recovered from the ravages of the last. It was therefore determined to carry the war into the enemy's country, which, open and defenceless as far as Vienna, invited attack. On their right, they might fall upon the territories of the Roman Catholic princes, or penetrate, on the left, into the hereditary dominions of Austria, and make the Emperor tremble in his palace. Both plans were resolved on; and the question that now remained was to assign its respective parts. Gustavus Adolphus, at the head of a victorious army, had little resistance to apprehend in his progress from Leipzig to Prague, Vienna, and Presburg.
As to Bohemia, Moravia, Austria, and Hungary, they had been stripped of their defenders, while the oppressed Protestants in these countries were ripe for a revolt. Ferdinand was no longer secure in his capital:
Vienna, on the first terror of surprise, would at once open its gates.
The loss of his territories would deprive the enemy of the resources by which alone the war could be maintained; and Ferdinand would, in all probability, gladly accede, on the hardest conditions, to a peace which would remove a formidable enemy from the heart of his dominions. This bold plan of operations was flattering to a conqueror, and success perhaps might have justified it. But Gustavus Adolphus, as prudent as he was brave, and more a statesman than a conqueror, rejected it, because he had a higher end in view, and would not trust the issue either to bravery or good fortune alone.
By marching towards Bohemia, Franconia and the Upper Rhine would be left to the Elector of Saxony. But Tilly had already begun to recruit his shattered army from the garrisons in Lower Saxony, and was likely to be at the head of a formidable force upon the Weser, and to lose no time in marching against the enemy. To so experienced a general, it would not do to oppose an Arnheim, of whose military skill the battle of Leipzig had afforded but equivocal proof;and of what avail would be the rapid and brilliant career of the king in Bohemia and Austria, if Tilly should recover his superiority in the Empire, animating the courage of the Roman Catholics, and disarming, by a new series of victories, the allies and confederates of the king?
What would he gain by expelling the Emperor from his hereditary dominions, if Tilly succeeded in conquering for that Emperor the rest of Germany?
Could he hope to reduce the Emperor more than had been done, twelve years before, by the insurrection of Bohemia, which had failed to shake the firmness or exhaust the resources of that prince, and from which he had risen more formidable than ever?
Less brilliant, but more solid, were the advantages which he had to expect from an incursion into the territories of the League. In this quarter, his appearance in arms would be decisive. At this very conjuncture, the princes were assembled in a Diet at Frankfort, to deliberate upon the Edict of Restitution, where Ferdinand employed all his artful policy to persuade the intimidated Protestants to accede to a speedy and disadvantageous arrangement. The advance of their protector could alone encourage them to a bold resistance, and disappoint the Emperor's designs.
Gustavus Adolphus hoped, by his presence, to unite the discontented princes, or by the terror of his arms to detach them from the Emperor's party. Here, in the centre of Germany, he could paralyse the nerves of the imperial power, which, without the aid of the League, must soon fall -- here, in the neighbourhood of France, he could watch the movements of a suspicious ally; and however important to his secret views it was to cultivate the friendship of the Roman Catholic electors, he saw the necessity of making himself first of all master of their fate, in order to establish, by his magnanimous forbearance, a claim to their gratitude.
He accordingly chose the route to Franconia and the Rhine;and left the conquest of Bohemia to the Elector of Saxony.
