Battle of Famaillá
1841 CE.
Shown on the map at -27.034°, -65.410°.
The Battle of Famaillá (Famaillá, Tucumán Province, Argentina, September 19, 1841), was a Federal Party victory, under the command of former Uruguayan president Manuel Oribe, over the army of the Unitarian Party under general Juan Lavalle, during the Argentine Civil War.
Text from the Wikipedia article Battle of Famaillá, licensed CC BY-SA 4.0.