This was a vehicle used to test components to replace the Honest John, Little John, and Lacrosse. That next generation of missiles had to be transported by helicopter and usable in airborne operations. Other generic missiles were also used to test components. Missile "C" was supposed to replace the Sergeant and Missile "D" became he Pershing.
U.S. Army
Dimensions
Length: 16 feet
Diameter: 12.5 inches
Weight: 387 pounds
Propellant: Solid
First Firing: 1960