The R. A. F. undertook its longest operational flight of the war last weeknearly 1,800 miles to and from Cracow and Katowice, Poland, where leaflets were dropped. Hard-boiled Air Marshal Sir Charles Portal does not have many illusions about winning friends and influencing people with pamphlets. The raid had more tangible fruits in the way of experience.
For one thing, the communiqué announcing the raid did not specify what type of bomber was used. The latest Vickers-Armstrong Wellington bombers claim an effective range of 2,000 miles, with 2,500 pounds of bombs, but if they actually can make such a range,...