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BATTLE // December 20, 1808

Second Siege of Zaragoza

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Overview

The siege of Zaragoza was the French capture of the Spanish city of Zaragoza in 1809 during the Peninsular War. It was particularly noted for its brutality. The city was heavily outnumbered against the French. Afterwards, a great part of the city lay in ruins, and the garrison had suffered 24,000 deaths along with 30,000 civilians deaths.

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

Significance

The French capture of Zaragoza in 1809 was one of the most costly urban actions of the Peninsular War. Despite fielding 42,000 troops against a Spanish garrison of 30,000, French forces under Lannes, Mortier, Suchet, and Moncey sustained roughly 6,000 casualties, a figure that underscores the intensity of the Spanish resistance. The human cost on the defending side was catastrophic: the garrison suffered approximately 24,000 deaths, and civilian losses reached 30,000, leaving much of the city in ruins. The siege became a marker of the broader character of the Peninsular War, in which Spanish resistance — even in hopeless strategic positions — inflicted disproportionate costs on French forces and prolonged the campaign well beyond initial French expectations.

Forces & casualties

Troop strength

  • France42,000
    medium
  • Spain30,000
    medium

France fielded a 1.4 : 1 numerical advantage

Casualties

  • France6,000
    medium14% loss rate
  • Spain30,000
    medium100% loss rate

Commanders (7)

France

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Related

6 sibling battles · 3 factions

Last verified June 2026
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