Gustavus Adolphus now conveyed his artillery and the greater part of his troops over the river, and laid siege to Oppenheim, which, after a brave resistance, was, on December 8, 1631, carried by storm. Five hundred Spaniards, who had so courageously defended the place, fell indiscriminately a sacrifice to the fury of the Swedes. The crossing of the Rhine by Gustavus struck terror into the Spaniards and Lorrainers, who had thought themselves protected by the river from the vengeance of the Swedes. Rapid flight was now their only security; every place incapable of an effectual defence was immediately abandoned. After a long train of outrages on the defenceless citizens, the troops of Lorraine evacuated Worms, which, before their departure, they treated with wanton cruelty. The Spaniards hastened to shut themselves up in Frankenthal, where they hoped to defy the victorious arms of Gustavus Adolphus.
The king lost no time in prosecuting his designs against Mentz, into which the flower of the Spanish troops had thrown themselves. While he advanced on the left bank of the Rhine, the Landgrave of Hesse Cassel moved forward on the other, reducing several strong places on his march. The besieged Spaniards, though hemmed in on both sides, displayed at first a bold determination, and threw, for several days, a shower of bombs into the Swedish camp, which cost the king many of his bravest soldiers. But notwithstanding, the Swedes continually gained ground, and had at last advanced so close to the ditch that they prepared seriously for storming the place. The courage of the besieged now began to droop. They trembled before the furious impetuosity of the Swedish soldiers, of which Marienberg, in Würtzburg, had afforded so fearful an example. The same dreadful fate awaited Mentz, if taken by storm; and the enemy might even be easily tempted to revenge the carnage of Magdeburg on this rich and magnificent residence of a Roman Catholic prince. To save the town, rather than their own lives, the Spanish garrison capitulated on the fourth day, and obtained from the magnanimity of Gustavus a safe conduct to Luxemburg; the greater part of them, however, following the example of many others, enlisted in the service of Sweden.
On the 13th of December, 1631, the king made his entry into the conquered town, and fixed his quarters in the palace of the Elector. Eighty pieces of cannon fell into his hands, and the citizens were obliged to redeem their property from pillage by a payment of 80,000 florins. The benefits of this redemption did not extend to the Jews and the clergy, who were obliged to make large and separate contributions for themselves. The library of the Elector was seized by the king as his share, and presented by him to his chancellor, Oxenstiern, who intended it for the Academy of Westerrah, but the vessel in which it was shipped to Sweden foundered at sea.
After the loss of Mentz, misfortune still pursued the Spaniards on the Rhine. Shortly before the capture of that city, the Landgrave of Hesse Cassel had taken Falkenstein and Reifenberg, and the fortress of Köningstein surrendered to the Hessians. The Rhinegrave, Otto Louis, one of the king's generals, defeated nine Spanish squadrons who were on their march for Frankenthal, and made himself master of the most important towns upon the Rhine, from Boppart to Bacharach. After the capture of the fortress of Braunfels, which was effected by the Count of Wetterau, with the coöperation of the Swedes, the Spaniards quickly lost every place in Wetterau, while in the Palatine they retained few places besides Frankenthal. Landau and Kronweisenberg openly declared for the Swedes; Spires offered troops for the king's service; Mannheim was gained through the prudence of the Duke Bernard of Weimar and the negligence of its governor, who, for this misconduct, was tried before the council of war, at Heidelberg, and beheaded.
The king had protracted the campaign into the depth of winter, and the severity of the season was perhaps one cause of the advantage his soldiers gained over those of the enemy. But the exhausted troops now stood in need of the repose of winter quarters, which, after the surrender of Mentz, Gustavus assigned to them in its neighborhood. 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 neighboring 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 Main 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.[60]
While Gustavus Adolphus made himself master of the Rhine, and threatened the three neighboring 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 Würtzburg, 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 honor; 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 toward 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 toward his ally, the King of France. But the vindictive Bishop of Würtzburg, 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 Vice-regent 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 clamor 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. In that event, the fall of Austria was inevitable, and this great object of Richelieu's policy would be gained without injury to the church. If, on the other hand, the princes of the League persisted in their opposition and adhered to the Austrian alliance, the result would indeed be more doubtful, but still France would have sufficiently proved to all Europe the sincerity of her attachment to the Catholic cause, and performed her duty as a member of the Roman Church. The princes of the League would then appear the sole authors of those evils, which the continuance of the war would unavoidably bring upon the Roman Catholics of Germany; they alone, by their wilful and obstinate adherence to the Emperor, would frustrate the measures employed for their protection, involve the church in danger, and themselves in ruin.
Richelieu pursued this plan with greater zeal, the more he was embarrassed by the repeated demands of the Elector of Bavaria for assistance from France; for this prince, as already stated, when he first began to entertain suspicion of the Emperor, entered immediately into a secret alliance with France, by which, in the event of any change in the Emperor's sentiments, he hoped to secure the possession of the Palatinate. But though the origin of the treaty clearly showed against what enemy it was directed, Maximilian now thought proper to make use of it against the King of Sweden, and did not hesitate to demand from France that assistance against her ally which she had simply promised against Austria. Richelieu, embarrassed by this conflicting alliance with two hostile powers, had no resource left but to endeavor to put a speedy termination to their hostilities; and as little inclined to sacrifice Bavaria, as he was disabled, by his treaty with Sweden, from assisting it, he set himself, with all diligence, to bring about a neutrality as the only means of fulfilling his obligations to both. For this purpose, the Marquis of Breze was sent, as his plenipotentiary, to the King of Sweden at Mentz, to learn his sentiments on this point, and to procure from him favorable conditions for the allied princes. But if Louis XIII. had powerful motives for wishing for this neutrality, Gustavus Adolphus had as grave reasons for desiring the contrary. Convinced by numerous proofs that the hatred of the princes of the League to the Protestant religion was invincible, their aversion to the foreign power of the Swedes inextinguishable, and their attachment to the House of Austria irrevocable, he apprehended less danger from their open hostility than from a neutrality which was so little in unison with their real inclinations; and, moreover, as he was constrained to carry on the war in Germany at the expense of the enemy, he manifestly sustained great loss if he diminished their number without increasing that of his friends. It was not surprising, therefore, if Gustavus evinced little inclination to purchase the neutrality of the League, by which he was likely to gain so little, at the expense of the advantages he had already obtained.
The conditions, accordingly, upon which he offered to adopt the neutrality toward Bavaria were severe, and suited to these views. He required of the whole League a full and entire cessation from all hostilities; the recall of their troops from the imperial army, from the conquered towns, and from all the Protestant countries; the reduction of their military force; the exclusion of the imperial armies from their territories, and from supplies either of men, provisions, or ammunition. Hard as the conditions were, which the victor thus imposed upon the vanquished, the French mediator flattered himself he should be able to induce the Elector of Bavaria to accept them. In order to give time for an accommodation, Gustavus had agreed to a cessation of hostilities for a fortnight. But at the very time when this monarch was receiving from the French agents repeated assurances of the favorable progress of the negotiation, an intercepted letter from the Elector to Pappenheim, the imperial general in Westphalia, revealed the perfidy of that prince, as having no other object in view by the whole negotiation than to gain time for his measures of defence. Far from intending to fetter his military operations by a truce with Sweden, the artful prince hastened his preparations, and employed the leisure which his enemy afforded him, in making the most active dispositions for resistance. The negotiation accordingly failed, and served only to increase the animosity of the Bavarians and the Swedes.
Tilly's augmented force, with which he threatened to overrun Franconia, urgently required the king's presence in that circle; but it was necessary to expel previously the Spaniards from the Rhine, and to cut off their means of invading Germany from the Netherlands. With this view, Gustavus Adolphus had made an offer of neutrality to the Elector of Treves, Philip von Zeltern, on condition that the fortress of Hermanstein should be delivered up to him, and a free passage granted to his troops through Coblentz. But unwillingly as the Elector had beheld the Spaniards within his territories, he was still less disposed to commit his estates to the suspicious protection of a heretic, and to make the Swedish conqueror master of his destinies. Too weak to maintain his independence between two such powerful competitors, he took refuge in the protection of France. With his usual prudence, Richelieu profited by the embarrassments of this prince to augment the power of France, and to gain for her an important ally on the German frontier. A numerous French army was dispatched to protect the territory of Treves, and a French garrison was received into Ehrenbreitstein. But the object which had moved the Elector to this bold step was not completely gained, for the offended pride of Gustavus Adolphus was not appeased till he had obtained a free passage for his troops through Treves.
Pending these negotiations with Treves and France, the king's generals had entirely cleared the territory of Mentz of the Spanish garrisons, and Gustavus himself completed the conquest of this district by the capture of Kreutznach. To protect these conquests, the chancellor Oxenstiern was left with a division of the army upon the Middle Rhine, while the main body, under the king himself, began its march against the enemy in Franconia.
The possession of this circle had, in the meantime, been disputed with variable success between Count Tilly and the Swedish General Horn, whom Gustavus had left there with 8,000 men; and the Bishopric of Bamberg, in particular, was at once the prize and the scene of their struggle. Called away to the Rhine by his other projects, the king had left to his general the chastisement of the bishop, whose perfidy had excited his indignation, and the activity of Horn justified the choice. In a short time, he subdued the greater part of the bishopric; and the capital itself, abandoned by its imperial garrison, was carried by storm. The banished bishop urgently demanded assistance from the Elector of Bavaria, who was at length persuaded to put an end to Tilly's inactivity. Fully empowered by his master's order to restore the bishop to his possessions, this general collected his troops, who were scattered over the Upper Palatinate, and with an army of 20,000 men advanced upon Bamberg. Firmly resolved to maintain his conquest even against this overwhelming force, Horn awaited the enemy within the walls of Bamberg; but was obliged to yield to the vanguard of Tilly what he had thought to be able to dispute with his whole army. A panic which suddenly seized his troops, and which no presence of mind of their general could check, opened the gates to the enemy, and it was with difficulty that the troops, baggage, and artillery were saved. The reconquest of Bamberg was the fruit of this victory; but Tilly, with all his activity, was unable to overtake the Swedish general, who retired in good order behind the Main. The king's appearance in Franconia, and his junction with Gustavus Horn at Kitzingen, put a stop to Tilly's conquests, and compelled him to provide for his own safety by a rapid retreat.
The king made a general review of his troops at Aschaffenburg. After his junction with Gustavus Horn, Banner, and Duke William of Weimar, they amounted to nearly 40,000 men. His progress through Franconia was uninterrupted; for Tilly, far too weak to encounter an enemy so superior in numbers, had retreated, by rapid marches, toward the Danube. Bohemia and Bavaria were now equally near to the king, and, uncertain whither his victorious course might be directed, Maximilian could form no immediate resolution. The choice, of the king, and the fate of both provinces, now depended on the road that should be left open to Count Tilly. It was dangerous, during the approach of so formidable an enemy, to leave Bavaria undefended, in order to protect Austria; still more dangerous, by receiving Tilly into Bavaria, to draw thither the enemy also, and to render it the seat of a destructive war. The cares of the sovereign finally overcame the scruples of the statesman, and Tilly received orders, at all hazards, to cover the frontiers of Bavaria with his army.
Nuremberg received with triumphant joy the protector of the Protestant religion and German freedom, and the enthusiasm of the citizens expressed itself on his arrival in loud transports of admiration and joy. Even Gustavus could not contain his astonishment, to see himself in this city, which was the very centre of Germany, where he had never expected to be able to penetrate. The noble appearance of his person completed the impression produced by his glorious exploits, and the condescension with which he received the congratulations of this free city won all hearts. He now confirmed the alliance he had concluded with it on the shores of the Baltic, and excited the citizens to zealous activity and fraternal unity against the common enemy. After a short stay in Nuremberg, he followed his army to the Danube, and appeared unexpectedly before the frontier town of Donauwerth. A numerous Bavarian garrison defended the place; and their commander, Rodolph Maximilian, Duke of Saxe Lauenburg, showed at first a resolute determination to defend it till the arrival of Tilly. But the vigor with which Gustavus Adolphus prosecuted the siege soon compelled him to take measures for a speedy and secure retreat, which amidst a tremendous fire from the Swedish artillery he successfully executed.
The conquest of Donauwerth opened to the king the further side of the Danube, and now the small river Lech alone separated him from Bavaria. The immediate danger of his dominions aroused all Maximilian's activity; and however little he had hitherto disturbed the enemy's progress to his frontier, he now determined to dispute as resolutely the remainder of their course. On the opposite bank of the Lech, near the small town of Rain, Tilly occupied a strongly fortified camp, which, surrounded by three rivers, bade defiance to all attack. All the bridges over the Lech were destroyed; the whole course of the stream protected by strong garrisons as far as Augsburg; and that town itself, which had long betrayed its impatience to follow the example of Nuremberg and Frankfort, secured by a Bavarian garrison, and the disarming of its inhabitants. The Elector himself, with all the troops he could collect, threw himself into Tilly's camp, as if all his hopes centred on this single point, and here the good fortune of the Swedes was to suffer shipwreck forever.
Gustavus Adolphus, after subduing the whole territory of Augsburg, on his own side of the river, and opening to his troops a rich supply of necessaries from that quarter, soon appeared on the bank opposite the Bavarian intrenchments. It was now the month of March, when the river, swollen by frequent rains and the melting of the snow from the mountains of the Tyrol, flowed full and rapid between its steep banks. Its boiling current threatened the rash assailants with certain destruction, while from the opposite side the enemy's cannon showed their murderous mouths. If, in despite of the fury both of fire and water, they should accomplish this almost impossible passage, a fresh and vigorous enemy awaited the exhausted troops in an impregnable camp; and when they needed repose and refreshment they must prepare for battle. With exhausted powers they must ascend the hostile intrenchments, whose strength seemed to bid defiance to every assault. A defeat sustained upon this shore would be attended with inevitable destruction, since the same stream which impeded their advance would also cut off their retreat, if fortune should abandon them.
The Swedish council of war, which the king now assembled, strongly urged upon him all these considerations, in order to deter him from this dangerous undertaking. The most intrepid were appalled, and a troop of honorable warriors, who had grown gray in the field, did not hesitate to express their alarm. But the king's resolution was fixed. "What!" said he to Gustavus Horn, who spoke for the rest, "have we crossed the Baltic, and so many great rivers of Germany, and shall we now be checked by a brook like the Lech?" Gustavus had already, at a great personal risk, reconnoitred the whole country, and discovered that his own side of the river was higher than the other, and consequently gave a considerable advantage to the fire of the Swedish artillery over that of the enemy. With great presence of mind he determined to profit by this circumstance. At the point where the left bank of the Lech forms an angle with the right, he immediately caused three batteries to be erected, from which 72 field-pieces maintained a cross fire upon the enemy. While this tremendous cannonade drove the Bavarians from the opposite bank, he caused to be erected a bridge over the river with all possible rapidity. A thick smoke, kept up by burning wood and wet straw, concealed for some time the progress of the work from the enemy, while the continued thunder of the cannon overpowered the noise of the axes. He kept alive by his own example the courage of his troops, and discharged more than 60 cannon with his own hand. The cannonade was returned by the Bavarians with equal vivacity for two hours, though with less effect, as the Swedish batteries swept the lower opposite bank, while their height served as a breast-work to their own troops. In vain, therefore, did the Bavarians attempt to destroy these works; the superior fire of the Swedes threw them into disorder, and the bridge was completed under their very eyes. On this dreadful day, Tilly did everything in his power to encourage his troops; and no danger could drive him from the bank. At length he found the death which he sought—a cannon ball shattered his leg; and Altringer, his brave companion-in-arms, was, soon after, dangerously wounded in the head. Deprived of the animating presence of their two generals, the Bavarians gave way at last, and Maximilian, in spite of his own judgment, was driven to adopt a pusillanimous resolve. Overcome by the persuasions of the dying Tilly, whose wonted firmness was overpowered by the near approach of death, he gave up his impregnable position for lost; and the discovery by the Swedes of a ford, by which their cavalry were on the point of passing, accelerated his inglorious retreat. The same night, before a single soldier of the enemy had crossed the Lech, he broke up his camp, and, without giving time for the king to harass him in his march, retreated in good order to Neuburg and Ingolstadt. With astonishment did Gustavus Adolphus, who completed the passage of the river on the following day, behold the hostile camp abandoned: and the Elector's flight surprised him still more, when he saw the strength of the position he had quitted. "Had I been the Bavarian," said he, "though a cannon ball had carried away my beard and chin, never would I have abandoned a position like this, and laid open my territory to my enemies."
Bavaria now lay exposed to the conqueror; and, for the first time, the tide of war, which had hitherto only beat against its frontier, now flowed over its long spared and fertile fields. Before, however, the king proceeded to the conquest of these provinces, he delivered the town of Augsburg from the yoke of Bavaria; exacted an oath of allegiance from the citizens; and to secure its observance, left a garrison in the town. He then advanced, by rapid marches, against Ingolstadt, in order, by the capture of this important fortress, which the Elector covered with the greater part of his army, to secure his conquest in Bavaria, and obtain a firm footing on the Danube.
Shortly after the appearance of the Swedish King before Ingolstadt, the wounded Tilly, after experiencing the caprice of unstable fortune, terminated his career within the walls of that town. Conquered by the superior generalship of Gustavus Adolphus, he lost, at the close of his days, all the laurels of his earlier victories, and appeased, by a series of misfortunes, the demands of justice, and the avenging manes of Magdeburg. In his death, the Imperial army and that of the League sustained an irreparable loss; the Roman Catholic religion was deprived of its most zealous defender, and Maximilian of Bavaria of the most faithful of his servants, who sealed his fidelity by his death, and even in his dying moments fulfilled the duties of a general. His last message to the Elector was an urgent advice to take possession of Ratisbon, in order to maintain the command of the Danube, and to keep open the communication with Bohemia.
With the confidence which was the natural fruit of so many victories, Gustavus Adolphus commenced the siege of Ingolstadt, hoping to gain the town by the fury of his first assault. But the strength of its fortifications, and the bravery of its garrison, presented obstacles greater than any he had had to encounter since the battle of Breitenfeld, and the walls of Ingolstadt were near putting an end to his career. While reconnoitering the works, a 24-pounder killed his horse under him, and he fell to the ground, while almost immediately afterward another ball struck his favorite, the young Margrave of Baden, by his side. With perfect self-possession the king rose, and quieted the fears of his troops by immediately mounting another horse.
The occupation of Ratisbon by the Bavarians, who, by the advice of Tilly, had surprised this town by stratagem, and placed in it a strong garrison, quickly changed the king's plan of operations. He had flattered himself with the hope of gaining this town, which favored the Protestant cause, and to find in it an ally as devoted to him as Nuremberg, Augsburg, and Frankfort. Its seizure by the Bavarians seemed to postpone for a long time the fulfilment of his favorite project of making himself master of the Danube, and cutting off his adversaries' supplies from Bohemia. He suddenly raised the siege of Ingoldstadt, before which he had wasted both his time and his troops, and penetrated into the interior of Bavaria, in order to draw the Elector into that quarter for the defence of his territories, and thus to strip the Danube of its defenders.
The whole country, as far as Munich, now lay open to the conqueror. Mosburg, Landshut, and the whole territory of Freysingen, submitted; nothing could resist his arms. But if he met with no regular force to oppose his progress, he had to contend against a still more implacable enemy in the heart of every Bavarian—religious fanaticism. Soldiers who did not believe in the Pope were, in this country, a new and unheard-of phenomenon; the blind zeal of the priests represented them to the peasantry as monsters, the children of hell, and their leader as Antichrist. No wonder, then, if they thought themselves released from all the ties of nature and humanity toward this brood of Satan, and justified in committing the most savage atrocities upon them. Woe to the Swedish soldier who fell into their hands! All the torments which inventive malice could devise were exercised upon these unhappy victims; and the sight of their mangled bodies exasperated the army to a fearful retaliation. Gustavus Adolphus, alone, sullied the lustre of his heroic character by no act of revenge; and the aversion which the Bavarians felt toward his religion, far from making him depart from the obligations of humanity toward that unfortunate people, seemed to impose upon him the stricter duty to honor his religion by a more constant clemency.