Gustavus Adolphus, too weak in numbers to cope even with Wallenstein's force alone, naturally dreaded the junction of such powerful armies, and the little energy he used to prevent it, was the occasion of great surprise. Apparently he reckoned too much on the hatred which alienated the leaders, and seemed to render their effectual co-operation improbable; when the event contradicted his views, it was too late to repair his error. On the first certain intelligence he received of their designs, he hastened to the Upper Palatinate, for the purpose of intercepting the Elector: but the latter had already arrived there, and the junction had been effected at Egra.
This frontier town had been chosen by Wallenstein, for the scene of his triumph over his proud rival. Not content with having seen him, as it were, a suppliant at his feet, he imposed upon him the hard condition of leaving his territories in his rear exposed to the enemy, and declaring by this long march to meet him, the necessity and distress to which he was reduced. Even to this humiliation, the haughty prince patiently submitted. It had cost him a severe struggle to ask for protection of the man who, if his own wishes had been consulted, would never have had the power of granting it: but having once made up his mind to it, he was ready to bear all the annoyances which were inseparable from that resolve, and sufficiently master of himself to put up with petty grievances, when an important end was in view.
But whatever pains it had cost to effect this junction, it was equally difficult to settle the conditions on which it was to be maintained.
The united army must be placed under the command of one individual, if any object was to be gained by the union, and each general was equally averse to yield to the superior authority of the other.
If Maximilian rested his claim on his electoral dignity, the nobleness of his descent, and his influence in the empire, Wallenstein's military renown, and the unlimited command conferred on him by the Emperor, gave an equally strong title to it. If it was deeply humiliating to the pride of the former to serve under an imperial subject, the idea of imposing laws on so imperious a spirit, flattered in the same degree the haughtiness of Wallenstein. An obstinate dispute ensued, which, however, terminated in a mutual compromise to Wallenstein's advantage.
To him was assigned the unlimited command of both armies, particularly in battle, while the Elector was deprived of all power of altering the order of battle, or even the route of the army.
He retained only the bare right of punishing and rewarding his own troops, and the free use of these, when not acting in conjunction with the Imperialists.
After these preliminaries were settled, the two generals at last ventured upon an interview; but not until they had mutually promised to bury the past in oblivion, and all the outward formalities of a reconciliation had been settled. According to agreement, they publicly embraced in the sight of their troops, and made mutual professions of friendship, while in reality the hearts of both were overflowing with malice. Maximilian, well versed in dissimulation, had sufficient command over himself, not to betray in a single feature his real feelings; but a malicious triumph sparkled in the eyes of Wallenstein, and the constraint which was visible in all his movements, betrayed the violence of the emotion which overpowered his proud soul.
The combined Imperial and Bavarian armies amounted to nearly 60,000 men, chiefly veterans. Before this force, the King of Sweden was not in a condition to keep the field. As his attempt to prevent their junction had failed, he commenced a rapid retreat into Franconia, and awaited there for some decisive movement on the part of the enemy, in order to form his own plans. The position of the combined armies between the frontiers of Saxony and Bavaria, left it for some time doubtful whether they would remove the war into the former, or endeavour to drive the Swedes from the Danube, and deliver Bavaria. Saxony had been stripped of troops by Arnheim, who was pursuing his conquests in Silesia; not without a secret design, it was generally supposed, of favouring the entrance of the Duke of Friedland into that electorate, and of thus driving the irresolute John George into peace with the Emperor.
Gustavus Adolphus himself, fully persuaded that Wallenstein's views were directed against Saxony, hastily despatched a strong reinforcement to the assistance of his confederate, with the intention, as soon as circumstances would allow, of following with the main body.
But the movements of Wallenstein's army soon led him to suspect that he himself was the object of attack; and the Duke's march through the Upper Palatinate, placed the matter beyond a doubt.
The question now was, how to provide for his own security, and the prize was no longer his supremacy, but his very existence.
His fertile genius must now supply the means, not of conquest, but of preservation. The approach of the enemy had surprised him before he had time to concentrate his troops, which were scattered all over Germany, or to summon his allies to his aid. Too weak to meet the enemy in the field, he had no choice left, but either to throw himself into Nuremberg, and run the risk of being shut up in its walls, or to sacrifice that city, and await a reinforcement under the cannon of Donauwerth. Indifferent to danger or difficulty, while he obeyed the call of humanity or honour, he chose the first without hesitation, firmly resolved to bury himself with his whole army under the ruins of Nuremberg, rather than to purchase his own safety by the sacrifice of his confederates.
