information:classification, quality:correction
Army career

Perón began his military career in an Infantry post in Paraná, Entre Ríos. He went on to command the post, and in this capacity mediated a prolonged labour conflict in 1920 at La Forestal, then a leading firm in forestry in Argentina. He earned instructor's credentials at the Superior War School, and in 1929 was appointed to the Army General Staff Headquarters. Perón married his first wife, Aurelia Tizón (Potota, as Perón fondly called her), on 5 January 1929.

Perón was recruited by supporters of the director of the War Academy, General José Félix Uriburu, to collaborate in the latter's plans for a military coup against President Hipólito Yrigoyen of Argentina. Perón, who instead supported General Agustín Justo, was banished to a remote post in northwestern Argentina after Uriburu's successful coup in September 1930. He was promoted to the rank of Major the following year and named to the faculty at the Superior War School, however, where he taught military history and published a number of treatises on the subject. He served as military attaché in the Argentine Embassy in Chile from 1936 to 1938 and returned to his teaching post. His wife was diagnosed with uterine cancer that year and died on 10 September at age 36; the couple had no children.

The Argentine War Ministry assigned Perón to study mountain warfare in the Italian Alps in 1939. He also attended the University of Turin for a semester and served as a military observer in countries across Europe - holding positions as a military attaché in Berlin and in Rome. He studied Benito Mussolini 's Italian Fascism, Nazi Germany, and other European governments of the time, concluding in his summary, Apuntes de historia militar (Notes about military history, first published in 1932, second edition: 1934), that social democracy could be a viable alternative to liberal democracy (which he viewed as a veiled plutocracy) or to totalitarian régimes (which he viewed as oppressive). He returned to Argentina in 1941, and served as an Army skiing-instructor in Mendoza Province.