Sparkford, 1st ed., 1991. 256 pp., photo-ills. D.j., 24 x 16cm. FINE. Did you know that the wings of one of the finest Second World War bombers were originally meant to fold like butterfly's wings into hangars? Or that plans existed for No. 617 Squadron (The Dambusters) to be formed even before the war began? Much new material arises in this most comprehensive account yet of the origins and operations of the RAF aircraft in the Battle of Britain. Aircraft types are presented in their respective categories, with equal weight being given for the first time to the vital contribution made to the conflict by Coastal Command aircraft.