Charles Kingsford Smith
After finishing his military service in 1919, Smith created Kingsford Smith, Maddocks Aeros Ltd., flying a joy-riding service (which sold plane rides to customers for entertainment). He flew mostly in the North of England.  Later, he worked in the United States as a barnstormer, entertaining people by doing tricks in his airplane.  In 1921, he returned to Australia.  There he kept working as a barnstormer and also flew airmail services (he delivered mail by airplane).