Charles J. Mendelsohn

Military service: clean up, typo(s) fixed: From 1918–19 → From 1918 to 1919

← Previous revision Revision as of 17:44, 4 May 2026 Line 9: Line 9:

==Military service== ==Military service== During [[World War I]] he served in the censorship department of the [[United States Post Office Department|Post Office Department]] in 1917, dealing with foreign language, postal and newspaper censorship.<ref name=dict-north-carolina-biography/><ref name=nc-dept-natural-cultural-wilmingtonian-decodes-german-war-correspondence/> His work came to the attention of [[Herbert Yardley]] and he was recruited into Military Intelligence, section 8 (MI-8).<ref name=nc-dept-natural-cultural-wilmingtonian-decodes-german-war-correspondence/> From 1918–19 he was a captain in the Military Intelligence Division of the [[United States Department of War|War Department]] General Staff.<ref name=dict-north-carolina-biography/> During [[World War I]] he served in the censorship department of the [[United States Post Office Department|Post Office Department]] in 1917, dealing with foreign language, postal and newspaper censorship.<ref name=dict-north-carolina-biography/><ref name=nc-dept-natural-cultural-wilmingtonian-decodes-german-war-correspondence/> His work came to the attention of [[Herbert Yardley]] and he was recruited into Military Intelligence, section 8 (MI-8).<ref name=nc-dept-natural-cultural-wilmingtonian-decodes-german-war-correspondence/> From 1918 to 1919 he was a captain in the Military Intelligence Division of the [[United States Department of War|War Department]] General Staff.<ref name=dict-north-carolina-biography/>

He led a team dealing with German diplomatic correspondence, breaking at least six diplomatic ciphers.<ref name=nc-dept-natural-cultural-wilmingtonian-decodes-german-war-correspondence/> Two messages dealt with German attempts to get support from Mexico.<ref name=nc-dept-natural-cultural-wilmingtonian-decodes-german-war-correspondence/> He led a team dealing with German diplomatic correspondence, breaking at least six diplomatic ciphers.<ref name=nc-dept-natural-cultural-wilmingtonian-decodes-german-war-correspondence/> Two messages dealt with German attempts to get support from Mexico.<ref name=nc-dept-natural-cultural-wilmingtonian-decodes-german-war-correspondence/>