Marian Rejewski - Education and Early Work

Education and Early Work

Marian Rejewski was born 16 August 1905 in Bromberg, now Bydgoszcz.(Note 2) His parents were Józef, a cigar merchant, and Matylda, née Thoms. He attended a German-speaking Königliches Gymnasium zu Bromberg (Royal Grammar School in Bromberg) and completed high school with his matura in 1923. Rejewski then studied mathematics at Poznań University, graduating on 1 March 1929.

In early 1929, shortly before he graduated, Rejewski began attending a secret cryptology course organized for selected German-speaking mathematics students by the Polish General Staff's Cipher Bureau (Biuro Szyfrów). The course was conducted off-campus at a military facility and, as Rejewski would discover in France in 1939 during World War II, "was entirely and literally based" on French General Marcel Givièrge's 1925 book, Cours de cryptographie (Course of Cryptography). Rejewski and fellow students Henryk Zygalski and Jerzy Różycki were among the few who could keep up with the course while balancing the demands of their normal studies.

Rejewski graduated with a master's degree in mathematics on 1 March 1929; his thesis was titled, "Theory of double periodic functions of the second and third kind and its applications." A few weeks later, without having completed the cryptology course, Rejewski began the first year of a two-year actuarial statistics course at Göttingen, Germany. He would not complete the actuarial-statistics course, for, while home for the summer in 1930, he accepted the offer of a mathematics teaching assistantship at Poznań University.

He also began working part-time for the Biuro Szyfrów (Cipher Bureau), which by then had concluded the cryptology course and set up an outpost at Poznań to decrypt intercepted German radio messages. Rejewski worked some twelve hours a week near the Mathematics Institute in an underground vault referred to puckishly as the "Black Chamber".

In the summer of 1932, the Poznań branch of the Cipher Bureau was disbanded. On 1 September 1932, as a civilian employee, Rejewski joined the Cipher Bureau at the General Staff building (the Saxon Palace) in Warsaw, as did Zygalski and Różycki.

Their first assignment was to solve a four-letter code used by the Kriegsmarine (German Navy). Progress was initially slow, but sped up considerably after a test exchange was intercepted—a six-group signal, followed by a four-group response. The cryptologists guessed correctly that the first signal was the question, "When was Frederick the Great born?" followed by the response, "1712."

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