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ORDER OF BATTLE // May 12, 1809

Second Battle of Porto

Estimated force strength by side, with confidence labels per surviving record.

Forces engaged

2 sides catalogued · combined 31,400–40,000 estimated

  • United Kingdom

    18,400–27,000

    Medium-confidence figure

  • France

    13,000

    Medium-confidence figure

Battle context

The Second Battle of Porto ended the Second French invasion of Portugal. Wellesley, having taken command of British forces in Portugal less than three weeks earlier, drove Marshal Soult's army out of Porto and forced a disorderly French retreat. Soult's escape route to the east was subsequently blocked, compelling him to destroy his artillery and burn his baggage train — significant operational losses even without the destruction of his army. Though Wellesley pursued, Soult's forces avoided annihilation by withdrawing through the mountains. The engagement restored Allied control of Porto and effectively removed the French threat to Portugal from the north, consolidating the strategic foundation from which Wellesley would conduct subsequent operations on the Iberian Peninsula.

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Sources (9)

Last verified June 2026
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