It was the armed services of Brazil, Argentina and Uruguay that helped develop the traditions of military parades in Paraguay following the devastating Paraguayan War, resulting in the introduction of certain traditions beginning in the early 20th century, which would later be infused with German, Italian and French influence. Before that war, however, they were quite few parades with primarily Spanish influences. The first major parade ever to be held in the 20th century in this country was on August 22, 1935, celebrating the victory won in the Chaco War against the Bolivian Armed Forces. In the 1940s and 50s, German goose-stepping had been adopted in a limited scale thanks to Chilean instructors in the Francisco Lopez Military Academy, the Acosta Ñu Military High School and the National Police Academy.