"CORAL" MACHINE
USED BY JAPANESE NAVAL ATTACHES
DURING WW2

During World War 2, the Japanese Naval Attaches used cipher machines which were known as the "Coral" machine by the American military. The machines used a series of telephone selector switches to encipher and decipher top secret messages.

These messages were often intercepted by and decrypted by American Army and Naval Intelligence staff.

 

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 Peter Dunn 2015

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This page first produced 14 October 2001

This page last updated 31 August 2018