Beyond the inflatable vehicles, the visual deception toolkit included dummy artillery pieces, signal equipment, camouflage netting deployed to suggest concealed real equipment, and careful attention to the ground tracks and disturbances that real vehicles would leave. A formation of tanks arriving in an area would disturb the ground, flatten vegetation, and leave track marks. The 23rd worked to create or suggest these secondary signatures as part of its visual tableau.
The sonic equipment was mounted on half-tracks: modified M3 half-track personnel carriers carrying large speaker arrays capable of projecting sound at volumes audible at significant distances. The recordings were made at Fort Knox, Kentucky, where the Army had captured actual tank engine sounds, track sounds, vehicle movement, and the ambient noise of large armored formations. The engineers who created the recordings tested them in conditions similar to those the unit would operate in, adjusting playback speeds and frequencies to account for how sound propagated over open terrain at night.
The radio equipment used by the 244th Signal Company (the deception radio element) was standard Army radio gear, but deployed with specific techniques developed for the impersonation mission. Each radio operator studied the unique characteristics of the operator they were impersonating — the rhythm of their Morse code, their characteristic delays and corrections, their preferences in message formatting. This study was based on recordings and intercepts that allowed the impersonators to develop detailed profiles of the operators they needed to convincingly replicate.
The aggregate effect of these tools, deployed simultaneously, was intended to create a signal environment that any intelligence system would interpret as real unit presence. Visual observation would confirm vehicles. Acoustic monitoring would confirm movement and mechanical activity. Radio intercept would confirm command communications and operational traffic. No single element would have been convincing in isolation; the combination was designed to be mutually reinforcing.
