Original caption states: “Analysis: In the Breakdown Unit of the Analysis Section, traffic figures are being taken from completed IBM runs and entered on Monthly Precedance and Classification Breakdown charts, which are used as permanent records of station-to-station traffic volumes. On the wall is a map showing the circuits of the Army Command and Administrative Net. “
Breakdown Unit of the Analysis Section
- 8/1945
Description
This primary source comes from the Records of the National Security Agency/Central Security Service.
Full Citation: Breakdown Unit of the Analysis Section; 8/1945; NR 2980 CBNM11A 11563A 19450800 Pictorial History of the Signal Security Agency; Historic Cryptographic Records, 1952–1981; Records of the National Security Agency/Central Security Service, Record Group 457; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/document/breakdown-unit-analysis-section/, April 27, 2026]
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