TheCodeBreakers
Forward as urgent intelligence.
This open code related the winds to the compass points in which the
named countries stood in regard to Japan: the U.S. to the east, Russia to
the north, England to the west. Tokyo also set up an almost similar code
for use in the general intelligence (not news) broadcasts.
As the secret messages establishing these open codes whistled
through the air, Navy intercept Station S at Bainbridge Island heard and
nabbed them. The station teletyped them to GY, which identified them as
J19 and began cryptanalysis.
Many of the ships of the Pearl Harbor strike force had by then
gathered in bleak Tankan Bay, where the only signs of human presence
were a small concrete pier, a wireless shack, and three fishermen's huts.
Snow covered the surrounding hills. In the gray twilight of November 21,
the great carrier Zuikaku glided into the remote harbor to complete the
roster. The force swung at anchor, awaiting the order to sortie.
annaabi.ee 
