| skos:altLabel | - Enigma
- ULTRA
- secret messages
- ultra
- when and whether to use data from Ultra intelligence
- <small>ULTRA</small>
- Bletchley Park
- British code-breakers
- Cryptological intelligence
- Enigma decrypts
- Enigma intelligence
- German ''Ultra''
- Intercepted German communications
- Special Liaison Unit
- ULTRA's
- Ultra Secret
- Ultra cryptanalytic intelligence
- Ultra intelligence
- Ultra programme
- Ultra secret
- World War II codebreaker
- cracked Germany's codes
- deciphering of German signals traffic
- decrypt transmissions
- decrypted radio messages
- information learned from it or other systems
- intelligence from breaking German codes
- intercepting communications
- intercepts
- ultra-secret
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