Albert Puellenberg began construction of a series of increasingly sophisticated rockets in 1928. While still a student, he formed the 'Hannover Group' - the Organisation for Rocket Research (Gesellschaft fuer Raketenforschung) in 1931. The VR1 rocket was fired the same year. By 1933 his Diesel-FT-Rak 3 had achieved, independently and in miniature scale, many of the design innovations and the external appearance of Von Braun's later V-2. After a visit by Dornberger in 1935, his group was dissolved by the Gestapo and further flight tests from Puellenberg's 'Rocketport Hannover' were prohibited. Some of Puellenberg's disciples went to Peenemuende and joined Von Braun. Puellenberg continued his work in secret, successfully firing the extremely sophisticated VR12 rocket in static tests in 1938. This was the end of the line and the last privately-developed rocket built in Germany until 1952.
After the war, Puellenberg, together with fellow rocket pioneers Karl Poggensee and Rudolf Nebel, began renewed German work on rockets for peaceful purposes. They participated in the first meetings of the new International Astronautical Federation in Paris in 1950 and London in 1951. This led to the resumption of private rocketry tests in 1952 and the ascents into outer space from Cuxhaven in the late 1957. These continued until Germany once again prohibited further substantive private rocketry in 1964.