CASUALTY RECORD // -48 BCE
Siege of Massilia
Estimated casualties — killed, wounded, captured, and missing — by side, with confidence labels per surviving record.
Casualties by side
2 sides catalogued · combined 5,100 estimated
Julius Caesar
1,100
Medium-confidence figure
Pompey
4,000
Medium-confidence figure
Battle context
The Siege of Massilia was an episode of Caesar's Civil War in which a detachment of Caesar's forces, under senior legate Gaius Trebonius on land and Decimus Brutus commanding the naval operations, engaged Optimate-aligned forces defending the city. The operation encompassed two naval engagements alongside the siege itself. Caesar's forces numbered approximately 15,000 against a Pompeian strength of around 8,000, and the disparity in casualties — roughly 1,100 for Caesar against 4,000 for the Pompeians under L. Domitius Ahenobarbus — indicates the severity of the fighting and the degree to which the defending force was worn down over the course of the siege.
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