Also they are showing on PBS Masterpiece Theater, "Island At War" which is a fictionalized account of the German occupation of the British Channel Islands (Guernsey and Jersey). This also sheds some light on what a potential Nazi occupation of England would have been like.
I've seen some of the Island at War series. It's interesting to see the island people having to choose between self-sacrifice and survival.
I agree with AF that the war could have gone differently if Hitler had taken England. For one thing, it might have bought him time and intellectual capital for nuclear research. He already had heavy long-range bomber designs that could reach the American east coast and return.
Also, Japan could have bought time by avoiding direct conflict with America until Britain and China were fully subjegated.
One does get the sense that America had fantastic resolve and great reserves of men and materiel. I think once we had entered the war, nuclear or not, we would have fought until we had overcome the Axis, even if it had played its cards more wisely.
I wonder if we have such depth of resolve today?
That's an excellent series. I hope they make more episodes, it appears to be over for now.