CASUALTY RECORD // June 24, 1838
Battle of Montenegro
Estimated casualties — killed, wounded, captured, and missing — by side, with confidence labels per surviving record.
Casualties by side
1 sides catalogued · combined 180–300 estimated
Confederación Perú-Boliviana
180–300
Medium-confidence figure
Battle context
The Battle of Montenegro, also known as the Battle of Cuyambuyo, was an engagement of the Tarija War, a theater of the broader War of the Confederation fought between Argentina and the Peru–Bolivian Confederation. Occurring on 24 June 1838, the battle involved a Peru–Bolivian Confederation force of approximately 1,900 troops under Otto P. Braun and F. Burdett O'Connor, opposed by Argentine Confederation forces under Gregorio Paz. The Peru–Bolivian Confederation sustained casualties estimated between 180 and 300, indicating a contested and costly engagement. Beyond these particulars, the recorded outcome and its effect on the wider campaign are not documented in the available sources.
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