
Battle of Alto de la Alianza, War of the Pacific — artwork by Juan Lepian
The Battle of Alto de la Alianza (May 26, 1880) was one of the most important engagements of the War of the Pacific between Peru and Bolivia against Chile. It was fought near Tacna, in southern Peru, on high, arid terrain. The allied Peruvian and Bolivian forces attempted to halt the Chilean advance, but after several hours of intense combat, the allied army was defeated. This battle was of great importance because: It resulted in the near-total destruction of the allied Bolivian army. It left Peru with very little organized military capacity in the south. It consolidated Chilean control over Tacna and southern Peru for the duration of the war.