resistance, threatened with the cruel fate of Magdeburg, occasioned the king suddenly to retire from before Mentz. Lest he should expose himself a second time to the reproaches of Germany, and the disgrace of abandoning a confederate city to a ferocious enemy, he hastened to its relief by forced marches. On his arrival at Frankfort, however, he heard of its spirited resistance, and of the retreat of Tilly, and lost not a moment in prosecuting his designs against Mentz. Failing in an attempt to cross the Rhine at Cassel, under the cannon of the besieged, he directed his march towards the Bergstrasse, with a view of approaching the town from an opposite quarter. Here he quickly made himself master of all the places of importance, and at Stockstadt, between Gernsheim and Oppenheim, appeared a second time upon the banks of the Rhine. The whole of the Bergstrasse was abandoned by the Spaniards, who endeavoured obstinately to defend the other bank of the river. For this purpose, they had burned or sunk all the vessels in the neighbourhood, and arranged a formidable force on the banks, in case the king should attempt the passage at that place.
On this occasion, the king's impetuosity exposed him to great danger of falling into the hands of the enemy. In order to reconnoitre the opposite bank, he crossed the river in a small boat; he had scarcely landed when he was attacked by a party of Spanish horse, from whose hands he only saved himself by a precipitate retreat. Having at last, with the assistance of the neighbouring fishermen, succeeded in procuring a few transports, he despatched two of them across the river, bearing Count Brahe and 300 Swedes. Scarcely had this officer time to entrench himself on the opposite bank, when he was attacked by 14 squadrons of Spanish dragoons and cuirassiers. Superior as the enemy was in number, Count Brahe, with his small force, bravely defended himself, and gained time for the king to support him with fresh troops. The Spaniards at last retired with the loss of 600 men, some taking refuge in Oppenheim, and others in Mentz. A lion of marble on a high pillar, holding a naked sword in his paw, and a helmet on his head, was erected seventy years after the event, to point out to the traveller the spot where the immortal monarch crossed the great river of Germany.
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 the 8th December, 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 Wurtzburg, 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 Luxembourg; the greater part of them, however, following the example of many others, enlisted in the service of Sweden.
On the 13th 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 Koningstein 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 co-operation of the Swedes, the Spaniards quickly lost every place in Wetterau, while in the Palatinate they retained few places besides Frankenthal. Landau and Kronweisenberg openly declared for the Swedes; Spires offered troops for the king's service; Manheim 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 neighbourhood. 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.
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