The Low-Stakes Race to Crack an Encrypted German U-Boat Message

A ramshackle team of American scientists scrambled to decode the Nazi cipher before the time ran out. Luckily, they had a secret weapon.

I Cover the Waterfront Select Non-fiction Articles of Bob Frump, 1980-2008 - The Frump Report

How the Allies cracked the Enigma Code, by Karthick Nambi, Lessons from History

Naval warfare of World War I - Wikipedia

Government Surveillance and Race, Part 1

Why didn't Germany do anything about the Naval Blockade in WW1 sooner? - Quora

Watch The Trials of J. Robert Oppenheimer, American Experience, Official Site

The Capture of U-570 and its Enigma Cipher Machine

Enigma: Why the fight to break Nazi encryption still matters - CNET

Chapter 1 History in: A Poetic History of the Oceans

History of Germany - Germany from 1871 to 1918

The Codebreakers' War in the Atlantic - Warfare History Network

The boarding of U-559 changed the war – now both sides tell their story, Second world war

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