The truce did not last long. In September Maximilian was once more on the Emperor's side. Bavaria paid dearly for the elector's defection. All that had been spared a year before fell a sacrifice to new devastation. The last great battle of the war was fought at Zusmarshausen on May 17, 1648. The Bavarians were defeated and the work of the destroyer went on yet for a while unchecked. In Bohemia half of Prague fell into the hands of the Swedes, and the Emperor was left unaided to bear up in the unequal fight.
[Section II.]—The Treaty of Westphalia.
§ 1. The Peace of Westphalia.
Ferdinand could resist no longer. On the 24th of October, 1648, a few months before Charles I. ascended the scaffold at Whitehall, the Peace of Westphalia was signed.
§ 2. Religious settlement.
The religious difficulty in Germany was settled as it ought to have been settled long before. Calvinism was to be placed on the same footing as Lutheranism. New-Year's day 1624 was fixed upon as the date by which all disputes were to be tested. Whatever ecclesiastical benefice was in Catholic hands at that date was to remain in Catholic hands forever. Ecclesiastical benefices in Protestant hands at that date were to remain in Protestant keeping. Catholics would never again be able to lay claim to the bishoprics of the north. Even Halberstadt, which had been retained at the Peace of Prague, was now lost to them. To make this settlement permanent, the Imperial Court was reconstituted. Protestants and Catholics were to be members of the court in equal numbers. And if the judicial body was such as to make it certain that its sanction would never be given to an infringement of the peace, the Catholic majority in the Diet became powerless for evil.
§ 3. Political settlement.
In political matters, Maximilian permanently united the Upper Palatinate to his duchy of Bavaria, and the Electorate was confirmed to him and his descendants. An eighth electorate was created in favour of Charles Lewis, the worthless son of the Elector, Frederick, and the Lower Palatinate was given up to him. Sweden established herself firmly on the mouths of the great northern rivers. The Eastern part of Pomerania she surrendered to Brandenburg. But Western Pomerania, including within its frontier both banks of the lower Vistula, was surrendered to her; whilst the possession of the bishoprics of Bremen and Verdun, on which Christian of Denmark had set his eyes at the beginning of the war, gave her a commanding position at the mouths of the Elbe and the Weser. The bishoprics of Halberstadt, Camin, Minden, and the greater part of the diocese of Magdeburg, were made over to Brandenburg as a compensation for the loss of its claims to the whole of Pomerania, whilst a smaller portion of the diocese of Magdeburg was assigned to Saxony, that power, as a matter of course, retaining Lusatia.
§ 4. Gains of France.
France, as a matter of course, retained its conquests. It kept its hold upon Austrian Alsace, Strasburg, as a free city, and the immediate vassals of the Empire being, however, excluded from the cession. The strong fortress of Philippsburg, erected by the warlike Elector of Treves, received a French garrison, and the three bishoprics, Metz, Toul, and Verdun, which had been practically under French rule since the days of Henry II. of France, were now formally separated from the Empire. Equally formal was the separation of Switzerland and the Netherlands, both of which countries had long been practically independent.