"JADE" MACHINE
USED BY JAPANESE IMPERIAL NAVY
DURING WW2

During World War 2, the Japanese Imperial Navy used cipher machines which were known as the "Jade" 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.

Can anyone help me with more information?

"Australia @ War" WWII Research Products

This page first produced 14 October 2001

This page last updated 17 January 2020