Order of battle at Tacna

The Battle at Tacna was an engagement during the War of the Pacific (1879–1883) between Chile and the Allied Forces of Peru and Bolivia. It was fought on May 20, 1880, with the forces aligned as follows:
Chilean North Operations Army.
Commanding General: Manuel Baquedano González
Chief of Staff: Col. Velasquez
Infantry.
I Division
Col. Santiago Amengual
"Strength: 2,547 men"
II Division
Lt. Col. Francisco Barcelo
"Strength: 2,130 men"
III Division
Col. Jose Domingo Amunategui
"Strength: 1,858 men"
IV Division
Col. Orozimbo Barbosa
"Strength: 2,285 men"
Reserve
Col. Mauricio Muñoz
"Strength: 2,335 men"
Allies.
Commanding General: Narciso Campero, Bolivian Army
"Strength: 13,650 men"
I Southern Peruvian Army.
I Division
Col. Justo Pastor Davila
II Division
Col. Andrés Avelino Cáceres
III Division
Col. Belisario Suarez
IV Division
Col. Jacinto Mendoza
V Division
Col. Alejandro Herrera
VI Division
César Canevaro
Nacionales Division
Col. del Solar
Cavalry
Artillery
Bolivian Army.
I Division
Col. Severino Zapata
II Division
Col. Claudio Acosta
III Division
Col. Idelfonso Murgia
IV Division
Col. Alfonso Gonzalez
Cavalry
Artillery