yes it did have a war in 2001.
revolution
dah
The civil war in Peru started in 1980 and, although still ongoing, had greatly wound down by 2000.
Peru was not in ww2
in 1931 peru fought china
Yes, Peru and Bolivia went to war against Chile in the War of the Pacific in 1879-1873.
Ecuador lost every war against Peru.
The Inca civil war, which erupted between rival factions led by Atahualpa and Huáscar, significantly weakened the Inca Empire, making it more vulnerable to Spanish conquest. The internal strife disrupted Inca unity and military strength, allowing Spanish conquistadors, led by Francisco Pizarro, to exploit the divisions. The civil war also facilitated the capture of Atahualpa, which demoralized the Inca forces and hastened their defeat. Ultimately, the conflict played a crucial role in the Spanish successfully establishing control over Peru.
Bolivia and Peru were at war against Chile from 1879 to 1883 in The War of the Pacific. Chile won the war and gained land from Peru and Bolivia. The Battle of Huamachuco in July 1883 was the last major battle of the war. The battle took place near the town of Huamachuco, Peru. The Chilean forces defeated the Peru forces with Peru suffering 800 dead and 300 captured. The battle marked the final defeat of Peru.
During the early conflicts prior to the War of the Pacific, Peru sought to negotiate a peaceful diplomatic solution between Bolivia and Chile. Despite Peru had a secret defensive alliance with Bolivia, Peru did not declare war on Chile even after Chile had invaded the Bolivian port of Antofagasta. War would not be declared formally until Chile declared war on both Peru and Bolivia on April 5, 1879. Peru declared war on Chile the following day. The war between the not original belligerents resulted in a Chilean invasion of Peru and the destruction of various Peruvian buildings, cities, a major raid and even a two year occupation of the capital of Peru, Lima. The ultimate result of the war left a deep scar on the three societies involved, and the good relations between Peru and Chile completely tumbled.
It would depend on which civil war you are referring to.
American Civil War: 1861-1865Mexican Civil War: 1858-1861Irish Civil War: 1922-1923Russian Civil War: 1917-1921Chinese Civil War: 1928-1937, 1945-1949Austrian Civil War: February 12 - February 16, 1934Spanish Civil War: 1936-1939