War of the Pacific: Battle of Tarapacá: The confrontation between the Chilean Army and the Peruvian Army takes place in Tarapacá, the Peruvian victory is consummated with the death of the 2 generals and the capture the Chilean general in said place of battle, headed by the Peruvian victory of General Juan Buendía y Noregia.

The War of the Pacific, also known by multiple other names, was a war between Chile and a Bolivian–Peruvian alliance from 1879 to 1884. Fought over Chilean claims on coastal Bolivian territory in the Atacama Desert, the war ended with victory for Chile, which gained a significant amount of resource-rich territory from Peru and Bolivia.

The Battle of Tarapacá occurred on 27 November 1879 during the Tarapacá Campaign of the War of the Pacific. Three Chilean columns of almost 3,900 soldiers attacked a numerically inferior Peruvian contingent of 3,046 troops at Tarapacá - 500 of which were at Quillahuasa, 1 hour away from the battlefield - commanded by Gen Juan Buendía, resulting in a harsh defeat. The Chilean 2nd Line Regiment was the most damaged unit, losing almost half of its force, along with its commander Col. Eleuterio Ramírez and his second in command, Lt. Col. Bartolomé Vivar. The unit lost its banner, which was recovered six months later after the Battle of Tacna. Despite the victory, the Allies could not contest for the domination of the Tarapacá department, abandoning it to Chilean control.

The Chilean Army is the land arm of the Chilean Armed Forces. This 80,000-person army is organized into six divisions, an army aviation brigade and a special operations brigade.

The Peruvian Army is the branch of the Peruvian Armed Forces tasked with safeguarding the independence, sovereignty and integrity of national territory on land through military force. Additional missions include assistance in safeguarding internal security, conducting disaster relief operations and participating in international peacekeeping operations. It celebrates the anniversary of the Battle of Ayacucho (1824) on December 9.