Wernher von Braun
Wernher Magnus Maximilian Freiherr von Braun (23 March 1912 – 16 June 1977) was a German engineer who, first in Germany and later in the United States, played a prominent role in all aspects of rocketry and space exploration.
During the war, he was an SS officer. He was briefly arrested by the SS, but considered indispensable, and was reinstated so that the V-2 rocket program could continue. After the war, he and his rocket team were taken from Germany to the United States, for government employment, in the operation later known as Operation Paperclip.