Kamfen na Tacna da Arica an san shi da matakin Yakin Pacific bayan mamayar Chile na sashen Peruvian na Tarapacá, wanda ya ƙare tare da mamayar Chile na sashen Moquegua a kudancin Peru. A lokacin wannan yakin Bolivia ta yi ritaya daga yakin bayan da
Yaƙin Tacna, kuma Peru ta rasa tashar Arica. Hakanan, Manuel Baquedano ya karbi umarni a matsayin sabon Kwamandan Kwamandan Sojojin Chile, kuma an kori Shugabannin Allied daga ofishin kuma Nicolas de Pierola ya maye gurbinsa a Peru da Janar Narciso Campero a Bolivia.