In 1943

In 1943: In 1943, Nazi Germany issued the Bunkers Order, which ordered the construction of Fortresses in the Air that would not only prevent an Allied invasion, but also protect their soldiers from airplanes and bombs. As a result, these Atlantiks were constructed based on extensive developments in aircraft, artillery, and concrete. Dug into the side of a mountain, the Atlantiks could withstand a direct hit from an atomic bomb.