Stig - y'know, not everything was Adolfs fault. Bombing London for revenge? Revenge on what? Britain had made a point of not bombing German cities for fear of provoking retaliation (possibly with gas), and Bomber Command in 1940 was barely capable of landing bombs on Germany full stop, let alone hitting their cities. The decision to switch to attacking British cities was for a variety of reasons, thankfully it cost Germany the battle
The Brits revenged themselves for the first bombing on London. Goering didn't want that bombing. After the British revenge Hitler wanted revenge for that etc etc