Battle of India Muerta
1816 CE.
Shown on the map at -34.094°, -54.295°.
The Battle of India Muerta took place between the Luso-Brazilian forces under the command of Sebastião Pinto de Araújo Correia against the artiguists led by Fructuoso Rivera in Rocha, present-day Uruguay. The battle lasted for four and a half hours and ended in a Luso-Brazilian victory.
Text from the Wikipedia article Battle of India Muerta, licensed CC BY-SA 4.0.