2C - Religious War in Germany
Learn why Charles V's military victory failed to restore religious unity, and how the Peace of Augsburg converted religious division into a legal settlement. Follow the connection between Luther's death, war, resistance, the peace's principles and the emperor's abdication.
Luther's death and the Schmalkaldic War
Luther's death removed the movement's founder but did not remove the institutions that sustained Lutheranism. He died at Eisleben on 18 February 1546. Princes, town governments, ministers, schools and the Augsburg Confession could continue to give churches protection and a common identity. His death was therefore a loss of personal leadership, rather than proof that the Reformation would collapse. Luther's final journey and death
In 1546 Charles V began war against the leading members of the Schmalkaldic League. He presented the action as punishment of disobedient princes as well as a defence of religion. This mattered because Catholic restoration and imperial authority were connected, but political loyalties did not simply match confessional labels. Maurice of Saxony, a Lutheran, sided with Charles against his relative John Frederick, seeking territorial and dynastic advantage.
Charles's victory at Mühlberg in April 1547 broke the League's military leadership. John Frederick of Saxony and Philip of Hesse were defeated and held prisoner, while Maurice gained the Saxon electoral dignity. The result gave Charles a much stronger bargaining position.
Military defeat, however, did not erase Lutheran belief or the churches already organised in territories and cities. A lasting restoration needed inhabitants and rulers to accept a religious settlement and needed the emperor to enforce it across a fragmented Empire. The difference between winning a battle and remaking religious life explains why Mühlberg was a high point of imperial power rather than a final solution. The conflict and subsequent imperial settlement
The Interim and imperial reversal
Charles tried to translate military supremacy into religious conformity through the Augsburg Interim of 1548. An interim was intended as a temporary arrangement pending a definitive settlement by a church council. This one restored much Catholic teaching and ceremony, while permitting limited concessions such as clerical marriage and communion in both kinds for the laity.
The compromise dissatisfied different groups for different reasons. Many Lutherans saw the return of Catholic doctrine and ceremony as a betrayal of evangelical truth. Strict Catholics objected to concessions and to an emperor directing a religious settlement. Within Lutheranism, disagreement over compromise divided those prepared to accept some outward ceremonies from those who considered conformity unacceptable.
Charles could enforce the Interim in some southern cities and territories, but could not secure uniform acceptance. Religious conviction, local privileges and princely resistance limited the reach of his victory. Maurice's position also changed: imperial supremacy threatened the autonomy that had helped motivate his earlier alliance with Charles.
In 1552 Maurice and allied princes turned against the emperor, assisted by an agreement with Henry II of France. Charles had to retreat from the danger of capture at Innsbruck. The Treaty of Passau that year, negotiated chiefly through Ferdinand, provided relief for Protestant rulers and prepared the way for a fuller peace. French assistance to Protestant German princes also demonstrates that strategic hostility to Charles could outweigh the French monarchy's Catholic religion.
The reversal supports a developed causal judgement: Charles failed because he could not turn force into accepted religious and constitutional authority. Doctrine explains resistance to the Interim; the princes' autonomy and international intervention explain why that resistance could defeat imperial enforcement. Darmstadt's scholarly edition and introduction to the Interim
The principles of Augsburg
The Peace of Augsburg in September 1555 protected a divided Empire by recognising two confessions rather than deciding which theology was true. Ferdinand conducted the negotiations while Charles withdrew from an outcome that fell short of his ambition for Catholic unity.
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