The Battle itself
In 1940, Germany attacked France, quickly taking Paris and causing the "Fall of France." This startled the British, who expected to fight another war like The Great War. This led newly elected prime minister Winston Churchill to speak to the British people on national radio about the Battle of France. He goes on to say "The Battle of France is over. The Battle of Britain is about to begin."
During the summer of 1940, German bombers targeted British military bases on the British mainland while German fighters fought the Royal Air Force(RAF) for air superiority. The RAF was more prepared than the Luftwaffe("Flying force," translates to Air Force) had expected and they couldn't break them in the first months of the battle. On August 13th, the Luftwaffe launched a major offensive, dubbing it "Adlertag("Eagle Day")." Adlertag was a failure for the Germans however. Bomber/Fighter coordination was affected by the weather, and the RAF was more resilient than initially thought. The luftwaffe lost 47 aircraft while the RAF only lost 13 fighters.