High-Altitude Bombers. Report by J.I.C.

6. We conclude, therefore, that the scale of attack from high-altitude bombers, during 1943 is likely to be sufficiently small to justify its being ignored. During 1944 a ceiling of 37,000 feet might be reached, but owing to the various technical difficulties referred to above the number of bombers capable of operating at this height is likely to be small by which is meant a scale of effort produced by a total force of up to, say, 30 high altitude aircraft resulting in spasmodic attacks by single or possibly two or three aircraft at a time.