Speaking of ignorance of history... Your blithe reassurance that an invasion of Britain was nothing to worry about is belied by the memoirs of British officials, who were very seriously worried about it. Your assertion that "no people of color" took part in the battle will come as a surprise to Afro-Britons (yes, there were some, even in 1940) and black French (many of them colonials).  I suggest you do a little historical reading yourself.