Colonel Alfred Redl was a master of his craft. While still in his 30s he rose to the General Staff and became chief of counter-intelligence for Austro-Hungary. His agents spider-webbed czarist Russia, ...
https://www.cambridge.org/core/journals/history-of-education-quarterly/article/sarah-anne-carter-object-lessons-how-nineteenthcentury-americans-learned-to-make-sense ...
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