John Fredrick Parker
Donor
Just a reminder: The OP isn't "What is needed for a successful Sea Lion" but "How far would an attempted Sea Lion get if the Nazis had managed gain air supremacy?"
A lot in between there; could they reach London, for example?
The USA joins the war.
The Soviets attack Germany as they were planning.
Evem with all these changes how do you prevent an enraged contingent of AHers from warming up their various time machines and going back to save England?
...with the RAF crushed and the RN driven from the south it was truly England's darkest hour. Many prayed for a miracle to save the nation. And one came! In a burst of bizarre sound and light effects a crowd of strangely dressed men, many of them strangely pale from lack of exposure to the sun, suddenly appeared in the heart of London, carrying designs, blueprints, prototypes and slim briefcase devices called 'computers'. After conferring briefly they all marched on Number 10 Downing...
Evem with all these changes how do you prevent an enraged contingent of AHers from warming up their various time machines and going back to save England?
...with the RAF crushed and the RN driven from the south it was truly England's darkest hour. Many prayed for a miracle to save the nation. And one came! In a burst of bizarre sound and light effects a crowd of strangely dressed men, many of them strangely pale from lack of exposure to the sun, suddenly appeared in the heart of London, carrying designs, blueprints, prototypes and slim briefcase devices called 'computers'. After conferring briefly they all marched on Number 10 Downing...
So winning the Battle of Britain could plausibly be what screws the Nazis over? I like that
That, I'd say, is for another TL; sorry.