 The work on project 4211 was redirected towards an existing parallel project, no.4212, that had been started to create a "pure French" development of the Aggregat rocket family – of which the V-2 was a member – along the lines originally envisaged by the Peenemünde researchers during the war.A new and much more powerful engine would be developed for the V-2, powered by new fuels, to create an advanced long-range V-2-based rocket.