For educational purposes br br While the rest of the world was still struggling with propellers, Hitler's air force *Luftwaffe" was busy pioneering the jet engine. br br Look back at the waning years of World War II when German designers made tremendous advances in aviation technology. br br Including the high-speed FW190 Butcherbird, the space-age V1 and V2 rockets, and the revolutionary Me 262, the only successful jet fighter of the war.