Presented by Rene Cutforth
Sunday morning, 7 December, 1941 - Pearl Harbour, Hawaii. The devastating Japanese surprise attack on the American Pacific Fleet. 'The day that will live in infamy.'
American Intelligence knew of the attack six hours before it took place. But the American top-brass didn't act on it till it was too late.
How the Americans were able to decode Japanese diplomatic messages by reconstructing the top-secret Japanese code machine is American Intelligence's greatest success story.
(How do you rate as a codebreaker's page 15)