Battle of Buenavista

On April 1, 1880, the Battle of Locumba took place, in which a Chilean cavalry detachment led by Dublé Almeyda was unexpectedly attacked by Gregorio Albarracín. Dublé Almeyda and three soldiers managed to mount and escape towards Moquegua, leaving eight Chileans dead and the rest prisoners, who were sent to Tacna and then La Paz.

Due to the disaster at Locumba, Dublé was tried in a court-martial before being acquitted. This motivated the mobilization of a Chilean column, of about 600 soldiers under the command of Commander José Francisco Vergara, with the aim of confronting Albarracín, who was arming the populations of the interior against the Chileans.

On April 10, the Chileans went looking for Gregorio Albarracín, but didn't find him at Locumba.

Albarracin withdrew towards Mirave, some 30 kilometers into the valley, and from there headed south towards the Rio Sama Valley .

Albarracín gathered the residents of Sama to confront Vergara, and on April 18, 1880, the Battle of Buenavista took place, in the same valley of the Sama River. Albarracín attacked a Chilean outpost led by Ensign Souper, who withdrew from the valley, to return with 450 men under the command of Tomás Yávar. Then Albarracín withdrew to Tacna, leaving the sameños in the valley, those who, without weapons, were decimated in the grasslands of Sama. The battle caused the loss of 100 men, and 35 prisoners. Albarracín managed to withdraw to Tacna with only 30 men.

Just 3 kilometers south of Buenavista, the Chilean army would be concentrated a few weeks later, in the so-called Las Yaras camp, prior to the Battle of Tacna.

• Gonzalo Bulnes (1914). Guerra del Pacífico. De Tarapacá a Lima. Valparaíso, Chile: Sociedad Imprenta y Litografía Universo, p. 239.
• Pascual Ahumada Moreno (1886). Guerra del Pacífico, recopilación completa de todos los documentos oficiales, correspondencias y demás publicaciones referente a la guerra que han dado a la luz la prensa de Chile, Perú y Bolivia, conteniendo documentos inéditos de importancia. [War of the Pacific, complete compilation of all the official documents, correspondence and other publications referring to the war that have come to light in the press of Chile, Peru and Bolivia, containing important unpublished documents.] Chapter II. Valparaíso, Chile: Imprenta i Lib. Americana de Federico T. Lathrop, p. 482. Correspondencia a El Nacional de Lima.
• Academia de Historia Militar (1980). Historia del Ejército de Chile. Chapter 5. El ejército en la guerra del Pacífico. Ocupación de Antofagasta y Campaña de Tarapacá.