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Henryk Zygalski

(15 July 1908 – 30 August 1978) A research worker of the Poznań University and the Bureau, made the so-called Zygalski sheets i.e. perforated sheets used for determining a sequence of coding rotors of the Enigma. During the 2nd World War Henryk Zygalski was evacuated together with the Cipher Bureau to France. He worked respectively in units under the code names Bruno and Cadix. After the Third Reich seized the whole France, he got through Spain to the Great Britain. Within the Polish Armed Forces he worked here in the Signals Battalion of the Staff of the Commander-in-Chief. After the war, he stayed in the Great Britain where he taught in higher education schools.


Maksymilian Ciężki

Alastair Denniston

Dillwyn Knox

Gwido Langer

Marian Rejewski

Jerzy Różycki


Alan Turing

Henryk Zygalski