Includes galley proofs annotated with comments and suggestions by Sir Edward Marsh of the following chapters: Chapter 6 "The Darkening Scene, 1934"; Chapter 7 "Air Parity Lost, 1934 - 1935"; Chapter 8 "Challenge and Response, 1935"; Chapter 9 "Problems of Air and Sea, 1935 - 1939" (provisionally entitled "Air Defence Research, 1935 - 1939" and "The Rebuilding of the Fleet"); Chapter 10 "Sanctions Against Italy, 1935" (provisionally entitled "Italy and the League, 1935"). Also annotated with comments and suggestions by various individuals including WSC, William Deakin, 1st Lord Cherwell [earlier F A Lindemann] and CSC.