strict conservation of effort over a long period, aircraft fuel stocks have been accumulated, and thorough measures have been taken to maintain distribution of fuel supplies by assembling special fuel columns. 9. All the evidence available suggests that the G.A.F. has planned a sudden heavy blow of relatively short duration, as was to be expected in face of the overall Allied air superiority. There are indications that certain moves of aircraft were planned in the first place for a period of some 14 days, and it would be reasonable to assume that this period was envisaged as one during which the G.A.F.