The Second Ecuadorian–Peruvian War, usually called simply the Ecuadorian–Peruvian War, and known locally as the War of '41 (Spanish: Guerra del 41), was a South American war fought between 5 July to 2 October of 1941. It was the first of three military conflicts between Ecuador and Peru during the 20th century.
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The 86th anniversary falls on July 5, 2027.