High Quality Content by WIKIPEDIA articles! Air Marshal Sir Francis John Linnell KBE CB LoM saw active service in World War 1 and World War 2. He was Controller of Research and Development MAP during the development of the Bouncing bomb, the weapon eventually employed in Operation Chastise. `Jack` was Dubbed Sir Francis in the desert in front of the British press by King George VI and posthumously invested as a Commander in the Legion of Merit by Franklin D. Roosevelt.