In this scenario just before Hitler sends forces into Poland kick off WW2. The ROB sends both nations back to 500 AD. The Nazi's realize they are not in Kansas anymore when all the roads that lead into Poland disappear and they run into forests instead. The UK realizes that all the radio traffic that would be from France and other European nations goes silent. After a few days the Royal Navy and RAF do some investigating and find out to their shock that France as they know it is gone. Replaces with Roman like towns in their place. The Germans find themselves having to send flights out the get the lay of the land. And see that only Germany itself is developed. Every place else is just villages and forest. After a few weeks the Royal Navy and the German Navy blunder into each other. They are not at war yet since the invasion of Poland never occured. How will history unfold from this point forward.?