In June 1940 Nazi Germany overran France and forced the British army to evacuate at Dunkirk. Severely lacking in military equipment, Britain and its Empire now stood alone against Adolf Hitler's forces. To stand any chance of crossing the English Channel, Germany would have to crush the Royal Air Force and gain control of the skies during that summer. The Battle of Britain, the first major battle to be decided entirely by air power, had begun. Dan talks to military historian Andy Saunders about the Battle of Britain to find out which parts of the narrative we have got wrong and which we have right. Dan also spoke to veteran of the Battle of Britain, Wing Commander Thomas Neil.