Thapap, One of the strategies that Hitler used was to attack places when they were not prepared. I do believe that Britain had started to prepare for a war as its alleis were already captured and as Germany had a treaty with the USSR, they did not have any other place to go for support and USA had not joined WW II yet. As for France, they did not want Paris to be involved as they had a lot of things in the city they did not want to destroy. They surrended Paris without a war. And the other parts werent prepared either so they surendered just days after Paris did. As of Russia, it was not prepared but thanks to their cold weather, Germans could not give it their best. It was astonishing how fast Russia prepared itself for war though! And well I guess Poland was captured because of its unpreparedness too. Maybe I am wrong, but I think Hitler's greatest strategy was to go into nations when they least expected it! And bingo! :)