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

Lunch With a Stranger and a mission in Lisbon

(...) he was recalled- trained for special services-assigned to what he terms the second team and sent to Lisbon, there to help manufacture ""sibs""- the psychological warfare of rumors, gossip, etc. designed to break morale (...), excerpt from Lunch With a Stranger from David E. Walker [review here]