He himself employed the interval of inactivity in the field, which the season of the year enjoined, in arranging, with his chancellor, the affairs of his cabinet, in treating for a neutrality with some of his enemies, and adjusting some political disputes which had sprung up with a neighbouring ally. He chose the city of Mentz for his winter quarters, and the settlement of these state affairs, and showed a greater partiality for this town, than seemed consistent with the interests of the German princes, or the shortness of his visit to the Empire. Not content with strongly fortifying it, he erected at the opposite angle which the Maine forms with the Rhine, a new citadel, which was named Gustavusburg from its founder, but which is better known under the title of Pfaffenraub or Pfaffenzwang*.
* Priests' plunder; alluding to the means by which the expense of its erection had been defrayed.
While Gustavus Adolphus made himself master of the Rhine, and threatened the three neighbouring electorates with his victorious arms, his vigilant enemies in Paris and St. Germain's made use of every artifice to deprive him of the support of France, and, if possible, to involve him in a war with that power. By his sudden and equivocal march to the Rhine, he had surprised his friends, and furnished his enemies with the means of exciting a distrust of his intentions.
After the conquest of Wurtzburg, and of the greater part of Franconia, the road into Bavaria and Austria lay open to him through Bamberg and the Upper Palatinate; and the expectation was as general, as it was natural, that he would not delay to attack the Emperor and the Duke of Bavaria in the very centre of their power, and, by the reduction of his two principal enemies, bring the war immediately to an end. But to the surprise of both parties, Gustavus left the path which general expectation had thus marked out for him;and instead of advancing to the right, turned to the left, to make the less important and more innocent princes of the Rhine feel his power, while he gave time to his more formidable opponents to recruit their strength. Nothing but the paramount design of reinstating the unfortunate Palatine, Frederick V., in the possession of his territories, by the expulsion of the Spaniards, could seem to account for this strange step; and the belief that Gustavus was about to effect that restoration, silenced for a while the suspicions of his friends and the calumnies of his enemies. But the Lower Palatinate was now almost entirely cleared of the enemy; and yet Gustavus continued to form new schemes of conquest on the Rhine, and to withhold the reconquered country from the Palatine, its rightful owner. In vain did the English ambassador remind him of what justice demanded, and what his own solemn engagement made a duty of honour; Gustavus replied to these demands with bitter complaints of the inactivity of the English court, and prepared to carry his victorious standard into Alsace, and even into Lorraine.
A distrust of the Swedish monarch was now loud and open, while the malice of his enemies busily circulated the most injurious reports as to his intentions. Richelieu, the minister of Louis XIII., had long witnessed with anxiety the king's progress towards the French frontier, and the suspicious temper of Louis rendered him but too accessible to the evil surmises which the occasion gave rise to.
France was at this time involved in a civil war with her Protestant subjects, and the fear was not altogether groundless, that the approach of a victorious monarch of their party might revive their drooping spirit, and encourage them to a more desperate resistance. This might be the case, even if Gustavus Adolphus was far from showing a disposition to encourage them, or to act unfaithfully towards his ally, the King of France. But the vindictive Bishop of Wurtzburg, who was anxious to avenge the loss of his dominions, the envenomed rhetoric of the Jesuits and the active zeal of the Bavarian minister, represented this dreaded alliance between the Huguenots and the Swedes as an undoubted fact, and filled the timid mind of Louis with the most alarming fears. Not merely chimerical politicians, but many of the best informed Roman Catholics, fully believed that the king was on the point of breaking into the heart of France, to make common cause with the Huguenots, and to overturn the Catholic religion within the kingdom.
Fanatical zealots already saw him, with his army, crossing the Alps, and dethroning the Viceregent of Christ in Italy. Such reports no doubt soon refute themselves; yet it cannot be denied that Gustavus, by his manoeuvres on the Rhine, gave a dangerous handle to the malice of his enemies, and in some measure justified the suspicion that he directed his arms, not so much against the Emperor and the Duke of Bavaria, as against the Roman Catholic religion itself.
The general clamour of discontent which the Jesuits raised in all the Catholic courts, against the alliance between France and the enemy of the church, at last compelled Cardinal Richelieu to take a decisive step for the security of his religion, and at once to convince the Roman Catholic world of the zeal of France, and of the selfish policy of the ecclesiastical states of Germany.
Convinced that the views of the King of Sweden, like his own, aimed solely at the humiliation of the power of Austria, he hesitated not to promise to the princes of the League, on the part of Sweden, a complete neutrality, immediately they abandoned their alliance with the Emperor and withdrew their troops.
Whatever the resolution these princes should adopt, Richelieu would equally attain his object. By their separation from the Austrian interest, Ferdinand would be exposed to the combined attack of France and Sweden;and Gustavus Adolphus, freed from his other enemies in Germany, would be able to direct his undivided force against the hereditary dominions of Austria.
