Battle of Miahuatlán
1866 CE.
Shown on the map at 16.317°, -96.583°.
The Battle of Miahuatlán took place on 3 October 1866 in the vicinity of the current municipality of Miahuatlán de Porfirio Díaz in the state of Oaxaca, Mexico. It was fought between elements of the Mexican republican army under General Porfirio Díaz and troops of the Second Mexican Empire during the Second French intervention in Mexico. The Imperial troops were defeated, opening the way for Díaz to advance on the city of Oaxaca.
Text from the Wikipedia article Battle of Miahuatlán, licensed CC BY-SA 4.0.