how is Silbervogel and Walter Dornberger connected?
Silbervogel:  When Walter Dornberger attempted to create interest in military spaceplanes in the United States after World War II, he chose the more diplomatic term "antipodal bomber". Walter Dornberger: Major-General Dr. Walter Robert Dornberger (6 September 1895 – 27 June 1980) was a German Army artillery officer whose career spanned World War I and World War II.
World War II