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CASUALTY RECORD // June 9, 1808

Capture of the Rosily Squadron

Estimated casualties — killed, wounded, captured, and missing — by side, with confidence labels per surviving record.

Casualties by side

1 sides catalogued · combined 3,676 estimated

  • France

    3,676

    Medium-confidence figure

Battle context

The capture of the Rosily Squadron in June 1808 at Cádiz delivered the Spanish a significant early naval prize at the outset of the Peninsular War. Five French ships of the line and a frigate, bottled up in port since the Battle of Trafalgar in 1805 under British blockade, were surrendered along with roughly 4,000 French seamen after a five-day engagement. The action followed directly from the Second of May uprising in Madrid and reflected the rapid deterioration of the Franco-Spanish alliance across the Iberian Peninsula. The seizure removed a substantial French naval force from any potential operational use and handed Spain both material and symbolic momentum in the opening phase of the war.

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Sources (3)

Last verified June 2026
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