Battle of Acapulco
1863 CE.
Shown on the map at 16.864°, -99.882°.
The Battle of Acapulco were a series of battles during the Second French intervention in Mexico. Acapulco was a key port of the Pacific trade routes and thus changed hands several times in the course of the Franco-Mexican War. In this period, the population of the city had decreased from 6000 to 2000.
Text from the Wikipedia article Battles of Acapulco, licensed CC BY-SA 4.0.