Compagnia Nazionale Aeronautica was a manufacturer of aircraft and aircraft engines established in Italy in by Count . Together with a group of World War I veteran pilots, he operated a flying school in Rome from a field that would eventually be developed into . For the next decade or so, CNA also developed their own aircraft and engines to power them. Bonmartini had also worked on an advanced racing motorcycle engine, the GBR in another partnership, and eventually CNA acquired the rights to this as well.