In 1948, on this day American scientists finally succeeded in reverse engineering the anti-gravitation technology that had enabled the Nazi leadership to escape from the New Swabia base in Antartica before it was destroyed by an atomic bomb dropped from the B-29 "Sally Jupiter" of the 509th Composite Group.

Die GlockeDie Glocke ("The Bell") was a top secret technological device conceived by the Nazi scientist Hans Kammler. At the Wenceslaus mine by the Czech border his team successfully developed a test rig which had the appearance of a tall thin thermos flask a meter high encased in lead and containing red mercury. Not only had the goal of anti-gravity propulsion been achieved, but a concave mirror on top of the device provided the ability to see images from the past during its operation.

Fortunately, a film of that remarkable test had been smuggled out by an Allied double agent. The consequence was the momentous decision by FDR to abandon his demands for an unconditional surrender, and offer the Nazi High Command safe passage to Antartica.

The further development of secret weaponry then tempted the Fuhrer to resume hostilities. The result was the Battle of Antarctica which ended in the nuclear destruction of the Nazi base. Of course the Allies were unable to pursue the Nazis to the Moon base. The flipside was that the Nazis still needed a regular supply of red mercury from earth. Having developed their own UFO, the Allies decided to starve out the Nazi Moon base by intercepting the supply chain. The result was a frenetic series of UFO battles fought particularly over the North American continent. The Second World War had ended its final phase..
An article from the Nazi UFO thread.