PENN, Mildred (#221)

Alan Pollock’s Rough Notes:

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Sergeant Mildred PENN (later Mrs M COOPER) for her WW2 service with the ROYAL SIGNALS, ATS, & all, the many teams, mainly of WOMEN, In the WAR OFFICE “Y” GROUP on SIGNALS INTERCEPTION work.

She remembers well their Chief calling only a few of them together one day to congratulate them & saying that one of their number’s work had dramatically altered the war’s outcome; the “Y” SERVICE, followed ENIGMA as a source of high grade INTELLIGENCE, consisting of cryptographic analysis, plain language intercepts, direction finding and radio traffic analysis, supplementing what prisoners revealed and any captured documents.