Military and intelligence history mostly dealing with World War II.
Keep up the fantastic work. Your blog is great. Could it be that the Germans cracked the Hagelin machines before the war?
It is possible. OKW/Chi must have looked into the C-36 and there is a statement attributed to Menzer regarding the C-36 being solved. However I do not have the report given as a source (TICOM DF-174 ‘Description of contacts of Fritz Menzer with American and Soviet authorities and summary of career’)