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

Warsaw, Conference on Enigma Machine

The Conference took place in Warsaw in 2009. It was about Polish contribution during WW2 for intelligence, counter-intelligence and mostly for deciphering the Enigma Machine traffic.
I was invited and produced a paper about SOE in Portugal. 
I found the news about the event, today, here.

Flowers were a form to pay the tribute to the man who did the work to crack the German cypher machine, Marian Rejewski.