Room 40
E143744
UNEXPLORED
Room 40 was the British Admiralty’s World War I codebreaking unit, famed for intercepting and decrypting German communications such as the Zimmermann Telegram.
Referenced by (2)
| Subject (surface form when different) | Predicate |
|---|---|
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British intelligence
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historicalPrecursor |
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Government Code and Cypher School
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predecessor |