Crosses honouring dead soldiers in the cemetery at the Alto de la Alianza Monumental Complex, near Tacna, Peru

This monument is on the Inti Urqu (or Intiorko) plateau, where the Battle of Tacna / Batalla del Alto de la Alianza took place on 26 May 1880. The battle lasted for over 5 hours and was a decisive victory for the Chilean forces over Peruvian and Bolivian troops. The victory ensured Chilean domination of the Tarapacá region and ended the Peru - Bolivia alliance; Bolivia's decimated army took no further part in the War.