Battle of Pucará
1882 CE.
Shown on the map at -12.167°, -75.147°.
The Battle of Pucará (Spanish: Batalla de Pucará) was fought on February 5, 1882, during the Sierra Campaign of the War of the Pacific. With a two-to-one superiority in numbers and even more in artillery, the Chilean army under the command of Colonel Estanislao del Canto was unable to destroy the little Peruvian army of General Cáceres, and withdrew to the town of Pucará leaving the Peruvian army to continue its strategic retreat.
Text from the Wikipedia article First Battle of Pucará, licensed CC BY-SA 4.0.