TheCodeBreakers
newly created cryptologic section of the Military Intelligence Division, MI-
8.
*The President and his advisor were then using two main systems.
One was external—a superencipherment applied to the five-digit
numerical groups of what probably was a State Department code. The
first digit was enciphered by one of two alternate letters; the two pairs by
a vowel-consonant combination. Thus, in one edition of the
superencipherment, 40606 became FEDED, 40699, KEDIR, and so on. The
other was internal—a jargon code of such less-than-Stygian incognitos as
MASS for the Secretary of War, NEPTUNE for the Secretary of the Navy,
BLUEFIELDS for William C. Redfield, Secretary of Commerce, ALLEY for
Franklin K. Lane, Secretary of the Interior, and MANSION for David F.
Houston, Secretary of Agriculture. Yard-ley does not specify which he
solved.
Like Topsy, MI-8 just grew. First to arrive, to take charge of the
instruction subsection for training A.E.F
annaabi.ee 
