Bolivian Army
The Bolivian Army did not have enough troops to maintain the occupation. In the Battle of Tarapacá (1842), Peruvian montoneros, formed by Major Juan Buendía, from Iquique defeated on January 7, 1842 the detachment led by Colonel José María García, who died in the confrontation. Thus, Bolivian troops vacated Tacna, Arica and Tarapacá in February 1842 and retreated to Moquegua and Puno.