Fun fact, two M4 Enigmas were retrieved from the U-505 in June 1944. This sub can be toured at the Museum of Science and Industry in Chicago.<p><a href="http:&#x2F;&#x2F;www.msichicago.org&#x2F;whats-here&#x2F;exhibits&#x2F;u-505&#x2F;the-exhibit&#x2F;artifacts&#x2F;enigma&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.msichicago.org&#x2F;whats-here&#x2F;exhibits&#x2F;u-505&#x2F;the-exhi...</a>