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Beginning in 1945, JPL personnel went to White Sands Proving Ground in New Mexico to conduct a series of preliminary flight tests of the Corporal missile and WAC Corporal, a 1/5 scale model. This high-altitude test vehicle was designed and built for the Army Ordnance Department. They used a variety of configurations, launch vehicles, propellants ... and names (Bumper WAC, Baby WAC, WAC Dummy, WAC A, WAC B, Tiny Tim booster, and Corporal E). Launch equipment, stage separation, and stabilization were studied, data recorded, and photographs taken. The WAC Corporal would eventually be used as a second stage on top of a modified V-2 (German A-4) rocket.

Not all the facilities at White Sands were this primitive, but it looks like the crew enjoyed a good joke to help pass the time while in the field. They put up several signs on this shelter to identify the "Assembly Plant" and the powder and liquid propellant "departments." This photo shows four unidentified men with a 1/5 scale booster rocket in 1946.