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ORDER OF BATTLE // August 21, 1808

Battle of Vimeiro

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

Forces engaged

2 sides catalogued · combined 30,000–34,500 estimated

  • French Empire

    13,000–14,000

    Medium-confidence figure

  • United Kingdom

    17,000–20,500

    Medium-confidence figure

Battle context

The Battle of Vimeiro ended the first French invasion of Portugal. Wellesley's British force, numbering up to 20,500, inflicted over 1,600 casualties on Junot's army of 13,000–14,000 and drove it from the field near Lisbon. The defeat compelled France to abandon its initial occupation of Portugal, marking the first significant British land victory of the Peninsular War and establishing a foothold from which operations against French forces on the Iberian Peninsula would continue.

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Sources (8)

Last verified June 2026
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