Osoaviakhim
The Society for the Assistance of Defense, Aircraft and Chemical Construction (, romanized as Obshchestvo sodeystviya oboronye, aviatsionnomu i khimicheskomu stroitelstvu or academically transliterated as Obščestvo sodejstvija oboronje, aviacionnomu i himičeskomu stroitel'stvu, abbreviated as Osoaviakhim) was a Soviet socio-political defense organization and mass voluntary society that existed from 1927–1948. It was the predecessor of DOSAAF. History In 1920, during the Civil War, the Military Scientific Society was created as a voluntary defense organization in the Russian Socialist Federative Soviet Republic. This would later be renamed the Society for the Assistance of the Defense of the Soviet Union (OSO). A few years later, in the summer of 1925, the Aviakhim society was formed through the merger of the Society of Friends of the Air Fleet and the Society of Friends of Chemical Defense and the Chemical Industry (Dobrokhim). On January 23, 1927, at the joint meeting of the First All-Union Congress of Aviakhim and the Second Plenary Session of the Central Council of the Society for the Assistance of the Defense on the report of the People's Commissar for Military and Naval Affairs Kliment Voroshilov, it was decided to merge the two societies into one under the name Aviakhim-OSO. Over time,