CASUALTY RECORD // September 5, 1634
Battle of Nördlingen
Estimated casualties — killed, wounded, captured, and missing — by side, with confidence labels per surviving record.
Casualties by side
2 sides catalogued · combined 15,500–17,500 estimated
Spain
3,500
Medium-confidence figure
Sweden
12,000–14,000
Medium-confidence figure
Battle context
The Battle of Nördlingen on 5 September 1634 resulted in a decisive engagement between a combined Spanish-Imperial force of 33,000 and a Swedish army of 25,700. The disparity in casualties — 3,500 on the Spanish-Imperial side against 12,000–14,000 Swedish — indicates a severe Swedish defeat. The Swedish commanders present included Gustav Horn and Bernhard of Saxe-Weimar, while the opposing side was led by Cardinal-Infante Ferdinand, Ferdinand of Hungary, Matthias Gallas, Ottavio Piccolomini, and others. A Swedish loss of this scale, coming more than two years into the Swedish phase of the Thirty Years' War, would have significantly weakened Swedish military capacity in the German theater and affected the broader Protestant position within the conflict.
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