1940 saw The Battle of Britain, a defining moment of the war. This book was originally published to explain the tactics and background to the fighting that had taken place in the skies over the of South East England. When this great battle was being fought day after day, the men and women of this country went about their business with very little idea of what was happening above their heads in the fields of air. There was no sound or fury, only patterns of white vapour trails, leisurely changing form and shape, traced by a number of tiny specks scintillating like diamonds in the splendid sunlight.