In the early 1930’s, the Polish codebreakers succeeded while all the others failed: they broke the Enigma. Three young and brilliant mathematicians, Marian Rejewski, Henryk Zygalski and Jerzy Różycki managed to read the German cyphertexts from 1933 to as late as 1939. But this huge success remained a secret for a long time, unknown in France and England. After the fall of Poland in September 1939, the three mathematicians linked their fate with the French secret service and kept breaking the Enigma code. Again, following the French defeat of June 1940, they experienced exile and irremediably sank into oblivion. Today, the story of the Polish codebreakers and the French secret service remains very little known in France, although their work proved decisive in the Allied victory during the Second World War.
Hélène Sparrow-Germa (1891–1970) was a renowned French-Polish microbiologist, specialist in infectious diseases. Professor at the University of Warsaw, then member of the Pasteur Institute of Tunis, she was particularly dedicated to the struggle against typhus, having tried to get an effective vaccine to overcome the plague still deadly in the first years of the twentieth century. Hélène Sparrow devised an ambitious strategy, developing a sanitary fender on the eastern border of Poland against the spread of epidemics from Russia. The story of this French-Polish doctor is also repeatedly characterised by the ordeal of war. Willingly confronted with extreme and highly dangerous situations, Hélène Sparrow devoted herself to treating and helping wounded and sick soldiers, offering them protection and assistance. Often risking her own life, she showed a remarkable temerity reflecting her highly charismatic personality.
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