[Section I.]—Oppression of the Protestants.
1628
§ 1. Siege of Glückstadt.
It was not at Stralsund only that Wallenstein learned that he could be successfully resisted. Stade had surrendered with its English garrison to Tilly in April, but Glückstadt still held out. In vain Wallenstein came in person to Tilly's aid. The Danish cruisers kept the sea open. Wallenstein was obliged to retire. In January, 1629, the works of the besiegers were destroyed by a sally of the garrison.
1629
§ 2. The Peace of Lübeck.
Wallenstein, the great calculator, saw that peace with Denmark was necessary. The Swedes and the Danes were beginning to act together, and resistance to one nation, if there must be resistance, would be easier than resistance to two. Much to his satisfaction he found Christian not unwilling to listen to the voice of his charming. Just as the eagle eye of Gustavus descried the first feeble beams of light on the horizon, the King of Denmark, weary of misfortune and vexed at the prospect of having to crave help from his old competitor of Sweden, laid down his arms. On May 22, 1629, a treaty of peace was signed at Lübeck. Christian received back the whole of his hereditary possessions. In return he resigned all claim to the bishoprics held by his family in the Empire, and engaged to meddle no further with the territorial arrangements of Lower Saxony.
§ 3. Necessity of healing measures.
If the Peace of Lübeck was really to be a source of strength to Ferdinand it must be accompanied by some such measures as those with which Richelieu was accompanying his victory at Rochelle. It was not enough to have got rid of a foreign enemy. Some means must be found to allay the fears of the Germans themselves, which had found expression in the resistance of Stralsund.
§ 4. Opposite views as to what measures are needed.
That there was much to be done in this direction was openly acknowledged by almost all who had been concerned in the imperialist successes. Maximilian and the League held that it was above all things necessary to restrain the excesses of Wallenstein and his soldiers. Wallenstein held that it was above all things necessary to restrain the excessive demands of Maximilian and the clergy. Ferdinand, the man in whose hands fortune had placed the decision of the great question, probably stood alone in thinking that it was possible to satisfy both the soldiers and the priests without weakening his hold on the Empire.
The first act of Ferdinand after the signature of the treaty was to invest Wallenstein formally with the Duchy of Mecklenburg. Offence was thus given to those who believed that the rights of territorial sovereignty had been unduly invaded, and who were jealous of the right claimed by the Emperor to supersede by his own authority a prince of the Empire in favour of a successful soldier.