Germany became famous as the country which flew the first jet aeroplanes. In 1944, the Luftwaffe started to use the world’s first operational jet fighter plane, the Messerschmitt Me-262, even though the engines sometimes did not work properly. Once again, the shortage of materials needed to build the plane as well as the continuing bombing of Germany meant that not as many Me-262s were built as Germany would have liked. Even so, Germany also built and flew the world's first jet bomber, the Arado Ar 234, the world’s first fighter plane powered by a rocket, the Messerschmitt Me-163, the V-1 flying bomb, and V-2 rocket.