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BATTLE // September 25, 1812

Battle of Tucumán

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Overview

The Battle of Tucumán was fought on 24 and 25 September 1812 near the Argentine city of San Miguel de Tucumán, during the Argentine War of Independence. The Army of the North, commanded by General Manuel Belgrano, defeated the royalist troops commanded by General Pío de Tristán, who had a two-to-one advantage in numbers, halting the royalist advance on Argentina's northwest. Together with the Battle of Salta, on 20 February 1813, the victory at Tucumán allowed the Argentine troops to reaffirm the borders under their control.

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

Significance

The Battle of Tucumán on 24–25 September 1812 halted the royalist advance into Argentina's northwest, where General Juan Pío de Tristán's force of roughly 3,000 outnumbered Manuel Belgrano's Army of the North by nearly two to one. Belgrano's defeat of Tristán prevented the Viceroyalty of Peru from pushing deeper into the United Provinces and secured a critical buffer in the interior. Together with the subsequent victory at Salta in February 1813, Tucumán allowed the United Provinces to reaffirm and consolidate the borders under their control, stabilizing the northwestern front during a formative period of the Argentine War of Independence.

Forces & casualties

Troop strength

  • United Provinces1,800
    medium
  • Viceroyalty of Peru3,000
    medium

Viceroyalty of Peru fielded a 1.7 : 1 numerical advantage

Casualties

  • Provinces-Unies du Río de la Plata200
    medium
  • Espagne450–690
    medium

Commanders (2)

United Provinces

Viceroyalty of Peru

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6 sibling battles · 1 factions

Last verified June 2026
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