In the early days of World War Two when Britain stood alone against the terror of Hitler's all-conquering Third Reich, her future hung in the balance; her defence in the hands of the Spitfires and Hurricanes of the Royal Air Force's Fighter Command. They were Churchill's Few. In defiance of their own country's strict neutrality laws, a handful of American adventurers flew with them. This is their story - and a fresh perspective on the greatest air battle the world has ever seen.