The Battle Of Britain was mostly a battle of the skies between  mighty Nazi Germany and Britain. Germany had the luftwafe and Britain had the mighty R.A.F.(the Royal Air Force).

But Britain won because Hitler told everyone that the R.A.F. were at a weak stage and that the luftwafe would destroy them.Hitler was so wrong.Britain had anti aircraft guns,Spitfires,Hurricanes. And the Nazi invaded and as soon as they saw it all they retreated back to Germany.