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BATTLE // April 25, 1547

Battle of Mühlberg

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Overview

The Battle of Mühlberg took place near Mühlberg in the Electorate of Saxony in 1547, during the Schmalkaldic War. The Catholic princes of the Holy Roman Empire led by the Holy Roman Emperor Charles V decisively defeated the Lutheran Schmalkaldic League of Protestant princes under the command of Elector John Frederick I of Saxony and Landgrave Philip I of Hesse.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The Battle of Mühlberg was the decisive engagement of the Schmalkaldic War, resulting in a comprehensive victory for the Catholic imperial forces of Charles V over the Lutheran Schmalkaldic League. The League's principal commanders, Elector John Frederick I of Saxony and Landgrave Philip I of Hesse, led a force of approximately 6,000 against an imperial army of roughly 13,000. The League suffered approximately 8,000 casualties — a figure exceeding its own stated force size, indicating the scale of the collapse. The defeat effectively destroyed the Schmalkaldic League as a military force and removed the leading Protestant princes of the Holy Roman Empire from the field. As the organizing military alliance of Lutheran princes, the League's destruction left the Protestant cause without a coordinated armed structure to resist imperial religious and political authority, at least in the immediate aftermath of the war.

Forces & casualties

Troop strength

  • Schmalkaldic League6,000
    medium
  • Empire of Charles V13,000
    medium

Empire of Charles V fielded a 2.2 : 1 numerical advantage

Casualties

  • Schmalkaldic League8,000
    medium133% loss rate

Commanders (9)

Last verified July 2026
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