[frau kaleun]

Originally Posted by Rockstar

Don't any of you read the paper? Everyone knows information was recently released. Ground-based installations used immense projectors to generate a deflector shield, like the one that protected the air base at Biggin Hill from arial bombardment. This shield worked in both directions, however, and must be lowered momentarily to allow the launching of fighter aircraft.

Leading up to the Battle of Briton, German paratroops trained to land beyond the shield perimeter, and march over land to destroy the generators powering the shield. Obviously this never happened.