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BATTLE // -45 BCE

Battle of Thapsus

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Overview

The Battle of Thapsus was a military engagement that took place on April 6, 46 BC near Thapsus. The forces of the Optimates, led by Quintus Caecilius Metellus Scipio, were defeated by the forces of Julius Caesar. It was followed shortly by the suicides of Scipio and his ally, Marcus Porcius Cato Uticensis, the Numidian king Juba, and his Roman peer Marcus Petreius.

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

Significance

The Battle of Thapsus, fought on 6 April 46 BC near Thapsus, resulted in the defeat of the Optimate forces under Metellus Scipio by Julius Caesar's Populares. The engagement proved decisive within Caesar's Civil War: the destruction of the Optimate army in North Africa effectively eliminated organized senatorial military resistance on that front. The battle's immediate aftermath underscored its finality — Metellus Scipio, Numidian king Juba I, and Marcus Petreius all died by suicide in its wake, as did Marcus Porcius Cato Uticensis, the foremost symbolic figure of Optimate resistance. The loss of these commanders and the collapse of Optimate strength in Africa left Caesar without a significant opposing force in the region, consolidating his position in the wider civil conflict. Caesar's forces of approximately 50,000 achieved their result against an Optimate army estimated at 70,000, with Optimate casualties of some 10,000 against Caesarian losses of around 1,000, indicating the scale of the rout.

Forces & casualties

Troop strength

  • Populares50,000
    medium
  • Optimates70,000
    medium

Optimates fielded a 1.4 : 1 numerical advantage

Casualties

  • Populares1,000
    medium2% loss rate
  • Optimates10,000
    medium14% loss rate

Commanders (7)

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Related

6 sibling battles · 0 factions

Last verified July 2026
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