What if all of Fighter Command and Bomber Command were committed to the Battle of France? The one real advantage that the Germans had was in air power. The RAF held back most of its air power in case France fell and Britain was left to fight on. What if the RAF chiefs were overruled and Britain went all-in to stop Germans. Can the UK and France win the war in 1940? Do the Germans still win the Battle of France and Britain is left open to invasion?