Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules
Steve, the 2 to 1 ratio was part of Operation Fortitude South. For every bomb and strategic target attacked west (or south) of Dieppe, two bombs and targets should be attacked to the other side (east/north).A lot of targets could be interpreted as being in support of either (Tergnier above being an example). The trick was to keep the Germans guessing, and pander to their prejudice, a much overlooked factor. It was the Germans who decided that it was Normandy that was the feint, even after the initial stages of the invasion started.
I don't know about any ratio, that would require an exhaustive analysis of all the raids from the end of March up until D-Day which would be quite an undertaking
Cheers
Steve
I think the Doolittle raid was more a statement of intent than anything else i.e don't think you're safe, we're coming for you!
I guess it depends on the meaning of "nuisance".
Going from the "washing machine charlies" which used a single plane (minimal resource/effort) to try to effect moral and/or readiness by sleep deprivation to large raids (large resource/effort) as part of a misdirection program which would result in the enemy shifting his resources to different areas.
Whatever the intent of of the Doolittle raid it did have the latter effect. The Japanese kept more aircraft/AA guns "at home" than prior to the raid.