The Americans intercepted 26,581 JN-25 from September 1 to December 7, 1941, and they are apparently available for public review at the National Archives.
The Americans intercepted 26,581 JN-25 from September 1 to December 7, 1941, and they are apparently available for public review at the National Archives.
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Later the Japanese upgraded its code to the JN-25B, which was also broken by the Allies.
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Later the Japanese upgraded its code to the JN-25B, which was also broken by the [[Allies]].