Did the involvement really end with V2 reconstruction?

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Because if you do a search for some terms, you will sooner or later find declassified documents, all of which describe the results of interrogation of the many waves of german scientists and the work they have been doing with great speed. Some of the drawings went into production in 1960's, even. Of course, there are other, modern websites describing the great involvement of the thousands of german scientists - all of which far exceeded the V-2.