CASUALTY RECORD // June 11, 1865
Battle of Riachuelo
Estimated casualties — killed, wounded, captured, and missing — by side, with confidence labels per surviving record.
Casualties by side
1 sides catalogued · combined 247 estimated
Empire du Brésil
247
Medium-confidence figure
Battle context
The Battle of Riachuelo was a decisive naval engagement of the Paraguayan War, fought on the Paraná River between Paraguayan and Brazilian forces. By late 1864, Paraguay had achieved a series of victories in the conflict, but the naval defeat it suffered on June 11, 1865 marked a turning point that began to shift momentum toward the allied side. The battle effectively curtailed Paraguayan naval power, with strategic consequences for the broader prosecution of the war against the alliance of Brazil, Argentina, and Uruguay.
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