Solving the Enigma

short 3-wheel run. Although the installation is slow and space consuming, it has definite advantages in rapid wheel changes, remote control, and flexibility for handling special problems.

4. The following table shows a comparison of various aspects of the two installations. Most of the figures given below are only approximations.

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Respectfully, J. N. WENGER" 1. J.N. Wenger, "OP-20-G Memorandum" dated 12 February 1945, (NARA Record Group 457, File 35701.)

2. S.S.A. expands to Signal Security Agency, which was the name of the cryptologic section of the Army at the time.

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