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BATTLE // September 17, 1937

Battle of Santander

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Overview

The Battle of Santander was fought in the War in the North campaign of the Spanish Civil War during the summer of 1937 and saw the victory of Italian and Nationalist forces against the Republicans. Santander's fall on 26 August assured the Nationalist conquest of the province of Santander, now Cantabria. The battle devastated the Republic's "Army of the North"; 60,000 soldiers were captured.

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

Significance

The Battle of Santander was a decisive Nationalist victory within the War in the North campaign of the Spanish Civil War. The fall of Santander on 26 August assured Nationalist control of the province of Santander, now Cantabria, effectively eliminating a key Republican-held coastal territory. The battle's most consequential outcome was the destruction of the Republic's Army of the North: of the roughly 80,000 Republican troops engaged, 60,000 were captured, a loss the Republican war effort could not easily absorb. Combined with Italian and Nationalist cooperation in the operation, the battle demonstrated the operational effectiveness of Nationalist coalition forces in the northern theater and accelerated the collapse of the remaining Republican pocket on Spain's northern coast.

Forces & casualties

Troop strength

  • Republicans80,000
    medium
  • Nationalists90,000
    medium

Nationalists fielded a 1.1 : 1 numerical advantage

Casualties

  • Republicans60,000
    medium75% loss rate
  • Nationalists30,000
    medium33% loss rate

Commanders (6)

Nationalists

Republicans

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Related

6 sibling battles · 6 factions

Last verified May 2026
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