On 25 April 1935 he officially informed the British Naval attaché to Germany, Captain Gerard Muirhead-Gould, that Germany had laid down twelve 250-ton U-boats at Kiel.
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In 1938 he became head of the foreign liaison section of the Abwehr, the General Staff intelligence department.
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On 15 June 1938 Captain Bürkner was appointed head of the foreign liaison section (Abteilung Ausland, later Amt Ausland) of the Abwehr, the intelligence organization of the
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After his release he became director of the German staff of the Dutch airline KLM in Frankfurt.
Leopold II of Belgium | Leopold Stokowski | Léopold Sédar Senghor | Leopold II | Leopold I, Holy Roman Emperor | Leopold I of Belgium | Leopold Auer | Leopold III of Belgium | Order of Leopold | Leopold Mozart | Leopold II, Holy Roman Emperor | Leopold I | Leopold Bloom | Leopold von Ranke | Leopold III, Duke of Austria | Leopold | Aldo Leopold | Order of Leopold (Belgium) | Leopold Zunz | Leopold Wenzel | Leopold, Victoria | Leopold Kronecker | Leopold Hager | Jason Leopold | Archduke Leopold Wilhelm of Austria | Order of Leopold (Austria) | Leopold von Sacher-Masoch | Leopold Moczygemba | Leopold IV, Prince of Lippe | Léopold I of Belgium |