"So the first thing that was going on was that Rommel was reading the Allies' mail using the 621 group radio intercept company, led by Captain Alfred Seebohm monitoring British radio traffic. It was only after the capture of 621 group and Seebohm by the Aussies on July 10th 1942, that Rommel's fortunes began to reverse. Interestingly enough, in Seebohm’s headquarters the book "Rebecca" by Daphne Du Maurier was found. This was oddly enough in English, and from a Portuguese bookstore. A check of the bookstore in Lisbon (a great spy hangout city) showed that the German Embassy itself had purchased twelve copies. It seemed obvious this was being used as a "code source", but by whom and where? The novel "Code to Rebecca" isn’t totally made of whole cloth.
Turns out that in Cairo there was a Nazi spy named Eppler (Kondor Operation) who many times, disguised as a British officer using counterfeit British pound notes to pay for bar bills, was in consort with the exotic belly dancer Hekmeth Fahmy. She was an ardent Egyptian Nationalist, and opponent of British Colonial rule. Together and separately they would extract information from British officers and relay the information to Rommel's 621 group from their neighboring houseboats on the Nile using the book "Rebecca", and Eppler's short wave radio. When the British raided the houseboats, Eppler himself escaped, but his radio and copy of "Rebecca" were captured in late July. In early August Churchill replaced Auchinlech with General Sir Harold Alexander, and put "Monty" in charge of the 8th while supplying both men with the Ultra intercepts of Rommel's radio traffic to Kesselring in Rome."
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