 In early 1946, Gröttrup was appointed general director of the "Institut Nordhausen" which swelled to 5500 personnel for restoring the V-2 documentation and full production of V-2 components until October 1946.After the completion of this task, a selected group of about 160 scientists was forcibly moved to the USSR to remain on Gorodomlya island as part of the Operation Osoaviakhim on October 22, 1946, among more than 2000 other German experts to other locations and other industries for ensuring and completing the knowledge transfer of German technology.Korolev was appointed chief engineer for the Soviet experts delegated to Institut Nordhausen, and Glushko was in charge of the group reestablishing the V-2 engine and its testing.