Memoranda by WSC, First Lord of the Admiralty, on the possibilities of attack from overseas by Germany; includes printed marginal notes by the 1st Sea Lord [Prince Louis of Battenberg, later 1st Lord Milford Haven]. Also includes Admiralty papers "The Timetable of a Nightmare", giving a scenario of a successful German invasion, and an alternative scenario for a German attack in "A Bolt From the Grey". [Printed].