By 1940 the Allies had fallen behind the Axis powers in parachute design and research. Other than as a means of escape from a doomed aircraft, the British regarded parachuting as of little military value. All that changed when the Germans used paratroops, the Fallschirmj ger, to devastating effect in the invasion of the Low Countries, and Churchill demanded immediate action. The call went out for men who would be prepared to risk their lives testing...