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may 15, 1941 - Info that America has been listening on

Description:

Japanese Adm. Nomura informs his superiors that he has learned Americans were reading his message traffic. No one in Tokyo believes the code could have been broken. The code is not changed.

Added to timeline:

PH

BySamary
28 Mar 2019

Date:

may 15, 1941
Now
~ 83 years ago
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