the battle of the White Hill, near Prague, and the unfortunate elector had just time to escape from the kingdom he had rashly undertaken to govern. Ferdinand drove to the uttermost the advantages of his victory. The Union being destroyed and the Bohemian revolution crushed, attention was turned to the hereditary lands of the elector palatine. The Spanish troops and the army of the League invaded the Rhenish Palatinate, which was defended by Frederick’s remaining adherents, Christian of Brunswick and Count Ernst von Mansfeld, but after several battles it passed completely into the possession of the imperialists. Having been placed under the imperial ban Frederick became an exile from his inheritance, and the electorate which he was declared to have forfeited was conferred on Maximilian.
Thus ended the first stage of the Thirty Years’ War, although some desultory fighting continued between the League and its opponents. The second began in 1625 with the formation, after much fruitless negotiation, of a Protestant combination, which had the support of Danish interference in the war. England, although its leading member was Christian IV., king of Denmark, who as duke of Holstein was a prince of the Empire, and who like other Lutherans was alarmed at the emperor’s successes. It was in this war that Europe first became familiar with the great name of Wallenstein. Unable himself to raise and equip a strong army, and restive at his dependence on the League, Ferdinand gladly accepted Wallenstein’s offer to put an army into the field at no cost to himself. After Wallenstein had beaten Mansfeld at the bridge of Dessau in April 1626, and Tilly had defeated Christian of Denmark at Lutter in the succeeding August, the two generals united their forces. Denmark was invaded, and Wallenstein, now duke of Friedland, was authorized to govern the conquered duchies of Mecklenburg and Pomerania; but his ambitious scheme of securing the whole of the south coast of the Baltic was thwarted by the resistance of the city of Stralsund, which for five months he vainly tried to take. Denmark, however, was compelled to conclude peace at Lübeck in May 1629.
Intoxicated by success, Ferdinand had issued two months before the famous Edict of Restitution. This ordered the restoration of all ecclesiastical lands which had come into the possession of the Protestants since the peace of Passau in 1552, and, as several archbishoprics Dismissal of Wallenstein. and bishoprics had become Protestant, it struck a tremendous blow at the emperor’s foes and stirred among them intense and universal opposition. A little later, yielding to Maximilian and his colleagues in the League, Ferdinand dismissed Wallenstein, whose movements had aroused their resentment, from his service. A more inauspicious moment could not have been chosen for these two serious steps, because in the summer of 1630 Gustavus Adolphus left Sweden at the head of a strong army for the purpose of sustaining the Protestant cause in Germany. At first this great king was coldly received by the Protestants, who were ignorant of his designs and did not want a stranger to profit by the internal disputes of their country. A mistake at the outset would probably have been fatal to him, but he saw the dangers of his position and moved so warily that in less than a year he had obtained the alliance of the elector of Saxony, a consequence of the terrible sack of Magdeburg by the imperialists in May 1631 and of the devastation of the electorate by Tilly. He had also obtained on his own terms the assistance of France, and was ready to enter upon his short but brilliant campaign.
Having captured Frankfort-on-Oder and forced the hesitating elector of Brandenburg, George William, to grant him some assistance, Gustavus Adolphus added the Saxon army to his own, and in September 1631 he met Tilly, at the head of nearly the whole force of the League, at Breitenfeld, The campaign of Gustavus Adolphus. near Leipzig, where he gained a victory which placed North Germany entirely at his feet. So utterly had he shattered the emperor’s power that he could doubtless have marched straight to Vienna; he preferred, however, to proceed through central into southern Germany, while his Saxon ally, the elector John George, recovered Silesia and Lusatia and invaded Bohemia. Würzburg and Frankfort were among the cities which opened their gates to the Swedish king as the deliverer of the Protestants; several princes sought his alliance, and, making the captured city of Mainz his headquarters, he was busily engaged for some months in resting and strengthening his army and in negotiating about the future conduct of the war. Early in 1632 he led his troops into Bavaria. In April he defeated Tilly at the crossing of the Lech, the imperialist general being mortally wounded during this fight, and then he took possession of Augsburg and of Munich. Before these events Ferdinand had realized how serious had been his mistake in dismissing Wallenstein, and after some delay his agents persuaded the great general to emerge from his retirement. The conditions, however, upon which Wallenstein consented to come to the emperor’s aid were remarkably onerous, but Ferdinand had perforce to assent to them. He obtained sole command of the imperial armies, with the power of concluding treaties and of granting pardons, and he doubtless insisted on the withdrawal of the Edict of Restitution, although this is not absolutely certain; in brief, the only limits to his power were the limits to the strength of his army. Having quickly assembled this, he drove the Saxons from Bohemia, and then marched towards Franconia, with the intention of crossing swords with his only serious rival, Gustavus Adolphus, who had left Munich when he heard that this foe had taken the field. The Swedes and their allies occupied Nuremberg, while the imperialists fortified a great camp and blockaded the city. Gustavus made an attempt to storm these fortifications, but he failed to make any impression on them; he failed also in inducing Wallenstein to accept battle, and he was forced to abandon Nuremberg and to march to the protection of Saxony. Wallenstein followed, and the two armies faced each other at Lützen on the 16th of November 1632. Here the imperialists were beaten, but the victory was even more disastrous to the Protestant cause than a defeat, for the Swedish king was among the slain.
The Swedes, whose leader was now the chancellor Oxenstjerna, were stunned by this catastrophe, but in a desultory fashion they maintained the struggle, and in April 1633 a new league was formed at Heilbronn between them and the representatives of four of the German circles, The league of Heilbronn and the death of Wallenstein. while by a new agreement France continued to furnish monetary aid. Of this alliance Sweden was the predominant member, but the German allies had a certain voice in the direction of affairs, the military command being divided between the Swedish general Horn and Bernhard, duke of Saxe-Weimar. About this time some discontent arose in the allied army, and to allay this Bernhard was granted the bishoprics of Würzburg and of Bamberg, with the title of duke of Franconia, but on the strange condition that he should hold the duchy as the vassal of Sweden, not as a vassal of the Empire. The war, thus revived, was waged principally in the valleys of the Danube and the Rhine, the Swedes, seizing Alsace while Bernhard captured Regensburg. Meanwhile Wallenstein was again arousing the suspicions of his nominal allies. Instead of attacking the enemy with his accustomed vigour, he withdrew into Bohemia and was engaged in lengthy negotiations with the Saxon soldier and diplomatist, Hans Georg von Arnim (1581–1641); his object being doubtless to come to terms with Saxony and Brandenburg either with or without the emperor’s consent. His prime object was, however, to secure for himself a great territorial position, possibly that of king of Bohemia, and it is obvious that his aims and ambitions were diametrically opposed to the ends desired by Ferdinand and by his Spanish and Bavarian allies. At length he set his troops in motion. Having gained some successes in the north-east of Germany he marched to succour the hardly pressed elector of Bavaria; then suddenly abandoning this purpose he led his troops back to Bohemia and left Bernhard of Saxe-Weimar in possession of the Danube valley. It is not surprising that a cry, louder than ever, now arose for his dismissal. Ferdinand did as he was required. In January 1634 he declared Wallenstein deposed from his command, but he was still at the head of an army when he was
