The Battle of Britain is based on the great air campaign between the German Luftwaffe and the British Royal Air Force Fighter Command in August and September of 1940 . . . in this game, YOU may be able to reverse history!The first operational air combat game, and perhaps the first commercial air combat wargame. Each counter represented a formation of one or more aircraft (as assigned by the players). A turn lasted ten minutes and each hex on the mapboard was ten miles across. - BoardGameGeek