Designed to delay a German invasion long enough for Belgium and France to mobilize their defending forces, Eben Emael was the linch-pin upon which rested the vaunted Maginot Line. The fortress fell to a seventy-seven-man force of glider-borne German paratroops in barely more than a day (twenty-eight hours). The daring aerial assault on Eben Emael is one of the most spectacularly successful special operations in history. Book jacket.