The German company Polaris Spaceplanes has signed an agreement with the Bundeswehr to design a fully functional two-stage ...

For the nation’s main missile force in the mid-1960s and beyond. Administration defense planners are betting on two solid-fuel missiles: the Navy’s Polaris and the Air Force’s Minuteman.

SAC bases, they argue, are already prime Russian targets, and SAC missile-launching sites (where liquid-fuel rockets require considerable time getting up steam) will be, too. Polaris subs ...