TheCodeBreakers
picked up in the consulate. It was one sent from the Foreign Ministry to
Kita on the 6th: "Please wire immediately re the latter part of my #123
any movements of the fleet after the 4th." With this, he was soon able to
unlock the other PA-K2 messages—including the long one setting up
Kühn's light-signaling system. At about the same time in OP-20-oz,
Kramer, who had been too busy with the 13 parts on Saturday to work
on this message, was breaking out charts of Oahu and Maui to help in
de-garbling the message, which was finally reduced to plaintext by
Thursday. Marshall later said that it was the first message that clearly
indicated an attack on Pearl to him— but this was, of course, after the
fact.
From: Tokyo
To: Washington
7 December 1941
#902 Part 14 of 14
(Note: In the forwarding instructions to the radio station
handling this part, appeared the plain English phrase
“VERY IMPORTANT”)
7
annaabi.ee 
