Posted on Nov 7, 2021

The Undeclared War “History of Radio Intelligence” Part 2 of 8

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The title “Red Book” was our covering name for the “Imperial Japanese Navy Secret Operations Code – 1918”. Naval Intelligence obtained a photostat copy, including recent changes, in 1926 or 1927.

The Undeclared War “History of Radio Intelligence” Part 2 of 8

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Japan

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Naval/Maritime History 34198fd5

Spying

Posted 4 y ago

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PFC David Foster

Posted 4 y ago

A lot of information moving around....

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The Undeclared War “History of Radio Intelligence” Part 2 of 8

The Undeclared War “History of Radio Intelligence” Part 2 of 8

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