Battle of Montenegro

Battle of Montenegro
Part of the Tarija War

Argentine cuirassiers at the time of the battle
Date24 June 1838
Location
Montenegro - Cuyambuyo (now in Bolivia)
Result

Confederate victory

Belligerents
Argentine Confederation Peru–Bolivian Confederation
Commanders and leaders
Gregorio Paz Otto P. Braun
F. Burdett O'Connor
Strength
750–800 260–1,900
Casualties and losses
250–300 casualties 10–300 killed
15–226 wounded

The Battle of Montenegro, also called the Battle of Cuyambuyo, was fought on 24 June 1838 as part of the Tarija War, between Argentina and the Peru–Bolivian Confederation.

The invading Argentine army was defeated by a force led by Otto Philipp Braun supported by Francisco Burdett O'Connor, settling the location of Bolivia's southwestern border.