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BATTLE // August 20, 1557

Battle of St. Quentin

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Overview

The Battle of Saint-Quentin of 1557 was a decisive engagement of the Italian War of 1551–1559 between the Kingdom of France and the Spanish Empire, at Saint-Quentin in Picardy. A Habsburg Spanish force under Duke Emmanuel Philibert of Savoy defeated a French army under the command of Louis de Gonzague, and Anne de Montmorency, Duke of Montmorency.

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

Significance

The Battle of St. Quentin, fought on 20 August 1557 during the Italian Wars, resulted in catastrophic losses for the Kingdom of France. Against a Spanish imperial force reported at between 50,000 and 80,000 men, the French army of 26,000 suffered approximately 10,000 casualties compared to around 1,000 on the Spanish side. The engagement involved senior commanders on both sides, including the French constable Anne de Montmorency and Louis de Gonzague facing Duke Emmanuel Philibert, Ferrante I Gonzaga, the Count of Egmont, and Julián Romero for the Spanish Empire. The disparity in casualties points to a severe French defeat, with consequences that bore directly on the closing phase of the Italian Wars, which ended with the Peace of Cateau-Cambrésis in 1559 under terms broadly favorable to the Spanish Habsburgs.

Forces & casualties

Troop strength

  • Kingdom of France26,000
    medium
  • Spanish Empire50,000–80,000
    medium

Spanish Empire fielded a 2.5 : 1 numerical advantage

Casualties

  • Kingdom of France10,000
    medium38% loss rate
  • Spanish Empire1,000
    medium2% loss rate

Commanders (6)

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Related

1 sibling battles · 0 factions

Last verified July 2026
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