The Missile program known as the “Aggregate Project”, was the German attempt to develop free flying Inter Continental Missiles (ICBM) capable of devastating cities or large concentrated forces through use of high explosive warhead delivery, and later, in the series, a small nuclear warhead. These missiles were to be based in planned occupied Greenland and captured locations in the Caribbean and South America should the United States be invaded, or, in later parts of the series launched from across the ocean itself from the homeland; a true Intercontinental Ballistic Missile. -description from publisher