page_title: Stefan Mayer
hierarchical_section_title: Stefan Mayer
caption_attribution_description: English: Stefan Mayer (1895-1981) – Colonel of the Polish Army
context_page_description: Colonel Stefan A. Mayer was a Polish military intelligence officer and prewar chief of Counterintelligence within the Polish General Staff's Section II. In that capacity, he supervised the General Staff's Cipher Bureau, whose achievements included the breaking of German Enigma-machine ciphers.
context_section_description: Colonel Stefan A. Mayer (1895 — 23 March 1981, London) was a Polish military intelligence officer and prewar chief of Counterintelligence within the Polish General Staff's Section II (Oddział II).  In that capacity, he supervised the General Staff's Cipher Bureau, whose achievements included the breaking of German Enigma-machine ciphers.
caption: Stefan Mayer
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