
3 3 c m
40cm
actual image size: 32cm x 25cm
Description
Introduced on Atlantic U-Boats in February 1942, the code produced by the MK 4 Enigma was not broken until December 1942, after the capture of cypher documents from U-559 in the Mediterranean. The cracking of German cypher codes by Allied intelligence was a major achievement in cryptanalysis and played a key role in the outcome of the North Atlantic U- boat engagements.
Image Details
Image Ref.
10315651
© Science Museum / Science & Society Picture Library