The ME 163B, the most amazing fighter interceptor of all time. 279 built, with 25% flying in combat by the time their bases were over run by the allies in April 1945. Given another year of development with rocket armament instead of cannon, probably could of been a threat to the allied bombing campaign. While overly technical, a good over view of the development of the rocket fighter by Germany, Russia the US and Britain from the mid 1930's to 1950, when Britain finally abandoned the last attempt to develop a point defence rocket powered interceptor. To be clear, a rocket motor is completely different from a jet motor.