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Originally Posted by David Pausey
Nick
I have prob asked this befor but were sould I look for the Signals Intelligence files and ULTRA intercepts about Luftwaffe activity in Crete ?
David
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Hi david,
In the UK National Archives...
Signals Intelligence from about December 1944 onward: try the ORB of 276 Wing and its Appendices (AIR26/380, 381 & 382)
ULTRA: the DEFE3 series (which files depend on which dates you're interested in. Remember that the dates on the files are when the messages were decoded, not when they were sent. Delays could be anything from 12 hours to a few weeks. Usually within about 24 hours though).
Also the various HW series files from Government Code & Cipher School. I'm pretty new to these but HW5 looks promising and HW1 has copies of the messages that were drawn to Churchill's attention each day. The index is pretty good for these.
The AIR51 series also has sigint stuff but assembled a bit haphazardly on to microfilm, so it's a case of going through the NA catalogue