gather formally to hear reports. In spite of this, Hüttenhain held the chair at these conferences. Four different subjects were covered, with a day allotted to each. These were: Speech encipherment. Security of Teleprinters. Security of the Enigma cipher machine. Security of Hand systems. Buggisch attended only the first session. January 1945 In January 1945, Buggisch conducted three lectures, on ciphony, at the OKW/Chi. This was followed by a visit to the town of Ebermannstadt, and the Feuerstein Castle laboratory, to become acquainted with the proposed German ciphony systems. March 1945 Buggisch worked to determine the theoretical foundations of an Allied ciphony apparatus from the captured Mustang a/c restored to working order by the German Aeronautical Research Institute by engineer Vegemund, who described its working to Buggisch. The investigations begun at Wa Pruef 7/IVe could not be carried very far owing to the general disorganization then beginning and the fall of Germany. After World War II Before the war, he taught at the Old Realgymnasium Darmstadt (1938) and at the Stefan George Gymnasium in Bingen (1938–39). In May 1939, he was first called to the pioneers. Although not a member of the Nazi party, in 1943, he was appointed as a secondary school teacher (German:Studienrat) [possibly to teach the children of Nazi officials] that was held during his military service. In April 1946 he was released from prison. From 1948 to 1966, he taught at the Ludwig-Georgs-Gymnasium, the preparatory course for foreign students in Darmstadt (1966–1969), and finally as a postgraduate student at the Mathematics Institute of the TH-Darmstadt (1969–1972). TICOM homework Immediately after the war, he was interviewed extensively by the interrogators of the Target Intelligence Committee (TICOM) regarding his work. A large part of the available information about him and his activity comes from these interrogations. These investigations were originally classified as TOP SECRET, but with the passing of time they can now be viewed publicly. Otto Buggisch wrote homework, specifically a report for TICOM that described in detail, the Schlüsselgerät 39 device and the use of Hollerith and other specialist machinery in the solution of Hagelin traffic. TICOM publications Otto Buggisch is mentioned in the following TICOM documents: References 1910 births 1991 deaths German cryptographers History of telecommunications in Germany Telecommunications in World War II Pre-computer cryptographers German Army soldiers of World War II