The Battle of Tacna, also known as the Battle of the Halt of the Alliance (Spanish: Batalla del Alto de la Alianza), effectively destroyed the Peru-Bolivian alliance against Chile, forged by a secret treaty between both countries signed on 1873. On May 26, 1880, the Chilean northern operations army led by General Manuel Baquedano Gonzalez, conclusively defeated a Peru-Bolivian army commanded by the Bolivian President General Narciso Campero, after almost five hours of fierce combat. This battle took place at the Intiorko hill plateau, a few miles north of the Peruvian city of Tacna. As a result of this battle, the Bolivian army returned to its country, and never participated in the conflict again, leaving Peru to fight the rest of the war by themselves . Also, this victory consolidated the Chilean domain over the Tarapacá Province, territory definitively annexed to Chile after the sign of the Tratado de Ancón (English: Treaty of Ancon), on 1884, which ended the war. (more...)