But this superintendence was irreconcileable with the distance of the Swedish regency from the scene of action, and with the slowness which necessarily accompanies all the movements of a council.
To one comprehensive mind must be intrusted the management of Swedish interests in Germany, and with full powers to determine at discretion all questions of war and peace, the necessary alliances, or the acquisitions made. With dictatorial power, and with the whole influence of the crown which he was to represent, must this important magistrate be invested, in order to maintain its dignity, to enforce united and combined operations, to give effect to his orders, and to supply the place of the monarch whom he succeeded. Such a man was found in the Chancellor Oxenstiern, the first minister, and what is more, the friend of the deceased king, who, acquainted with all the secrets of his master, versed in the politics of Germany, and in the relations of all the states of Europe, was unquestionably the fittest instrument to carry out the plans of Gustavus Adolphus in their full extent.
Oxenstiern was on his way to Upper Germany, in order to assemble the four Upper Circles, when the news of the king's death reached him at Hanau. This was a heavy blow, both to the friend and the statesman. Sweden, indeed, had lost but a king, Germany a protector; but Oxenstiern, the author of his fortunes, the friend of his soul, and the object of his admiration. Though the greatest sufferer in the general loss, he was the first who by his energy rose from the blow, and the only one qualified to repair it. His penetrating glance foresaw all the obstacles which would oppose the execution of his plans, the discouragement of the estates, the intrigues of hostile courts, the breaking up of the confederacy, the jealousy of the leaders, and the dislike of princes of the empire to submit to foreign authority. But even this deep insight into the existing state of things, which revealed the whole extent of the evil, showed him also the means by which it might be overcome. It was essential to revive the drooping courage of the weaker states, to meet the secret machinations of the enemy, to allay the jealousy of the more powerful allies, to rouse the friendly powers, and France in particular, to active assistance; but above all, to repair the ruined edifice of the German alliance, and to reunite the scattered strength of the party by a close and permanent bond of union. The dismay which the loss of their leader occasioned the German Protestants, might as readily dispose them to a closer alliance with Sweden, as to a hasty peace with the Emperor; and it depended entirely upon the course pursued, which of these alternatives they would adopt. Every thing might be lost by the slightest sign of despondency; nothing, but the confidence which Sweden showed in herself, could kindle among the Germans a noble feeling of self-confidence. All the attempts of Austria, to detach these princes from the Swedish alliance, would be unavailing, the moment their eyes became opened to their true interests, and they were instigated to a public and formal breach with the Emperor.
Before these measures could be taken, and the necessary points settled between the regency and their minister, a precious opportunity of action would, it is true, be lost to the Swedish army, of which the enemy would be sure to take the utmost advantage. It was, in short, in the power of the Emperor totally to ruin the Swedish interest in Germany, and to this he was actually invited by the prudent councils of the Duke of Friedland. Wallenstein advised him to proclaim a universal amnesty, and to meet the Protestant states with favourable conditions. In the first consternation produced by the fall of Gustavus Adolphus, such a declaration would have had the most powerful effects, and probably would have brought the wavering states back to their allegiance. But blinded by this unexpected turn of fortune, and infatuated by Spanish counsels, he anticipated a more brilliant issue from war, and, instead of listening to these propositions of an accommodation, he hastened to augment his forces. Spain, enriched by the grant of the tenth of the ecclesiastical possessions, which the pope confirmed, sent him considerable supplies, negociated for him at the Saxon court, and hastily levied troops for him in Italy to be employed in Germany. The Elector of Bavaria also considerably increased his military force; and the restless disposition of the Duke of Lorraine did not permit him to remain inactive in this favourable change of fortune. But while the enemy were thus busy to profit by the disaster of Sweden, Oxenstiern was diligent to avert its most fatal consequences. Less apprehensive of open enemies, than of the jealousy of the friendly powers, he left Upper Germany, which he had secured by conquests and alliances, and set out in person to prevent a total defection of the Lower German states, or, what would have been almost equally ruinous to Sweden, a private alliance among themselves. Offended at the boldness with which the chancellor assumed the direction of affairs, and inwardly exasperated at the thought of being dictated to by a Swedish nobleman, the Elector of Saxony again meditated a dangerous separation from Sweden; and the only question in his mind was, whether he should make full terms with the Emperor, or place himself at the head of the Protestants and form a third party in Germany. Similar ideas were cherished by Duke Ulric of Brunswick, who, indeed, showed them openly enough by forbidding the Swedes from recruiting within his dominions, and inviting the Lower Saxon states to Luneburg, for the purpose of forming a confederacy among themselves. The Elector of Brandenburg, jealous of the influence which Saxony was likely to attain in Lower Germany, alone manifested any zeal for the interests of the Swedish throne, which, in thought, he already destined for his son. At the court of Saxony, Oxenstiern was no doubt honourably received; but, notwithstanding the personal efforts of the Elector of Brandenburg, empty promises of continued friendship were all which he could obtain. With the Duke of Brunswick he was more successful, for with him he ventured to assume a bolder tone. Sweden was at the time in possession of the See of Magdeburg, the bishop of which had the power of assembling the Lower Saxon circle. The chancellor now asserted the rights of the crown, and by this spirited proceeding, put a stop for the present to this dangerous assembly designed by the duke. The main object, however, of his present journey and of his future endeavours, a general confederacy of the Protestants, miscarried entirely, and he was obliged to content himself with some unsteady alliances in the Saxon circles, and with the weaker assistance of Upper Germany.
As the Bavarians were too powerful on the Danube, the assembly of the four Upper Circles, which should have been held at Ulm, was removed to Heilbronn, where deputies of more than twelve cities of the empire, with a brilliant crowd of doctors, counts, and princes, attended. The ambassadors of foreign powers likewise, France, England, and Holland, attended this Congress, at which Oxenstiern appeared in person, with all the splendour of the crown whose representative he was. He himself opened the proceedings, and conducted the deliberations. After receiving from all the assembled estates assurances of unshaken fidelity, perseverance, and unity, he required of them solemnly and formally to declare the Emperor and the league as enemies. But desirable as it was for Sweden to exasperate the ill-feeling between the emperor and the estates into a formal rupture, the latter, on the other hand, were equally indisposed to shut out the possibility of reconciliation, by so decided a step, and to place themselves entirely in the hands of the Swedes. They maintained, that any formal declaration of war was useless and superfluous, where the act would speak for itself, and their firmness on this point silenced at last the chancellor. Warmer disputes arose on the third and principal article of the treaty, concerning the means of prosecuting the war, and the quota which the several states ought to furnish for the support of the army. Oxenstiern's maxim, to throw as much as possible of the common burden on the states, did not suit very well with their determination to give as little as possible. The Swedish chancellor now experienced, what had been felt by thirty emperors before him, to their cost, that of all difficult undertakings, the most difficult was to extort money from the Germans. Instead of granting the necessary sums for the new armies to be raised, they eloquently dwelt upon the calamities occasioned by the former, and demanded relief from the old burdens, when they were required to submit to new. The irritation which the chancellor's demand for money raised among the states, gave rise to a thousand complaints; and the outrages committed by the troops, in their marches and quarters, were dwelt upon with a startling minuteness and truth.