William F. Friedman NSA Archive - War Department, American Army Field Codes In the American Expeditionary Forces During the First World War, by William F. Friedman, June 1942

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Files W.F.F. Archive Publications War Department, American Army Field Codes In the American Expeditionary Forces During the First World War, by William F. Friedman, June 1942

American Army Field Codes In the American Expeditionary Forces During the First World War

Document A68211

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