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The Lorenz SZ40 and SZ42 (Schlüsselzusatz, meaning "cipher attachment") machines were used for high-level communications by the German Army High Command. |
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The National Museum of Computing at Bletchley Park needs our donations to continue providing public access to Colossus and other exhibits. The Museum receives no government funding and relies on the generosity of people like you. Donations of £25 or more receive a limited edition t-shirt. |
We Need Your Help. |
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