WW1 Paved the Way for the Battle of Britain.

I think Hitler believed after the 1938 crisis and the Western power stance on many deeds on his part that he would never have to fight France or Britain as they would just do what they had done before: protest and then accept it.

If I remember well, I once heard in a documentary that he was really surprised when he got the declaration of war from France and Britain.

One may conclude from it that the German Luftwaffe and army was never actually meant to invade France, let alone Britain. It was done and attempted because facts were different from what was planned for and had to be accounted for by going into the offensive, trying to take out France and Britain, with what they had, before turning to their real objective.