Simon and Schuster, New York, 1st ed., 1957. 323 pp., photo-plates, ills., + e.p., maps. D.j., 23 x 15cm. Price-clipped d.j., o/w V.G.+. This book examines all the factors which led up to the projected German invasion of Britain, codenamed Operation Sea Lion, the German plans for launching it, and the British plans to repel it. Based on German and British sources, the author details the often fantastic German preparations, pieces together the silent battle between the Intelligence Staffs on both sides of the Channel, and analyses the ruthless German plans for Occupied Britain. The contrast between Hitler's dilatoriness in ordering Operation Sea Lion to be mounted, and his reluctance to abandon the project even after its inherent recklessness had become plain, is put in strategic perspective, and the strange delusions which underlay his failure to liquidate his only remaining enemy at the time are examined in the light of new evidence.