Secret War in Portugal [1939-1945]
For SOE [British Special Operation Executive] 24 Land was the code name for Portugal

David Eccles & Salazar

Incredible how secrets could be revealed with such a detail, but love prevails over reason and common sense. I am working now on David Eccles [MEW representative in Lisbon during WW2 days, arrived to Lisbon at the time Sir Walford Selby was HM Ambassador] book By Safe Hand [The Bodley Head, 1983] which is a collection of letters exchanged between him and his wife Sybil. Reading these we can follow not only the course of the events but became aware of information that could not be traced in the Archives. «I saw Salazar yesterday and was immensely impressed, nothing I had heard could have equalled the dignity, good sense and charm of the best-looking dictator in Europe», he shares with her. 
Graham Green wrote a novel about The Human Factor in the intelligence world. He was right.