Over the years, yes years, this thread has clearly demonstrated its ability to discuss more than one topic at a time. I therefore would love to see those who know far more than I do discuss the following "What if?".
In the mid 30's, Alan Cobham clearly demonstrated the viability of in flight refuelling as a means of extending the range of aircraft. It seemed that the Air Ministry and the leading lights of the RAF were not interested until after the war.
What if the RAF had used the Cobham system to operate a fleet of maritime aircraft to provide air cover over the Mid Atlantic Gap. If they could have been successful, it would certainly have reduced the effectiveness of the U Boat campaigns in the Atlantic and probably have had a much bigger effect than the bombing of German cities. Would navigation systems at that time have been good enough to enable bombers to rendezvous with tankers? Would contemporary large aircraft carry enough fuel for themselves and anyone else or would they have to set up a Black Buck type of operation?
Are there any Coastal Command types in the virtual crew room who could offer an opinion?