 Cody's D.4 also powered his entry to fourth place in the 1911 "Daily Mail" Circuit of Britain competition, a distance of 1,010 miles.That engine, flown over 7,000 miles, was exhibited at the 1913 Olympia Aero Show.Despite its pre-war success, neither the Green D.4 nor other Green models played a part in the war, in which the lighter, air-cooled French engines of Le Rhône, Clerget and Gnome were extensively used.