What did the declassified documents reveal?

On Declassified, we examine a Central Intelligence Agency record concerning Chinese military movements, dated approximately August sixteenth, nineteen-fifty. This declassified document is available from documents2.theblackvault.com. This document was released under the Freedom of Information Act and made public by The Black Vault. Its declassification authority is not specified on the document itself. The document reads: SECRET. Except for units which remained in Manchuria, there has been no positive confirmation of units of the Fourth Field Army having moved from South China to Manchuria. However, since late May nineteen-fifty, numerous reports have indicated movement of Fourth Field Army units Northward from Canton. A U.S. Citizen, who departed Hankou early July, observed fourteen troop trains of Fourth Field Army units moving North of Canton. Was told troops to be moved North of Peking. A reliable foreign observer in Hankou reported large movement of troops, believed to be the Fortieth Army, moving North through Hankou on July tenth. A recent visitor to North China stated common knowledge in Tientsin and Chinhuangtao that between July twentieth and July twenty-third, elements of Lin Piao’s Army passed through cities via rail en route to the Northeast. From the above and other reports, it is reasonable to assume some of Lin Piao’s troops are in Manchuria, but strength and designations cannot be determined at this time. Troops moving north may have been Koreans and Manchurian Koreans being returned for service in Korea. Reports could be confused with movement of Nieh Jung Chen’s Twentieth Army Group which reportedly moved from the Peking-Tientsin Area to Manchuria during July. Information on this subject available to F-E-C generally available to D-A. A note from The Black Vault's archive entry for this document states: "This declassified CIA record, titled 'Chinese Military Movements', provides a snapshot of U.S. intelligence on China during a critical period. Dated August sixteenth, nineteen-fifty, the report details observations and rumors regarding the redeployment of Chinese military units, particularly the Fourth Field Army, from South China towards Manchuria and potentially Korea. The document highlights the challenges of confirming troop strength and designations amidst conflicting reports and the possibility of confusion with other troop movements." This is what the public record looks like at its most ordinary. Find this document and more at storyflo.com, or directly at archive.org/download/us-china-intel-CI00452/CI00452djvu.txt.

Why was this case declassified?

This material entered the public record through the U.S. declassification and Freedom of Information Act (FOIA) process. The originating source document is linked on this page so the citation chain is auditable.

Case File · ARCHIVE-008Declassified

Filed NOV 5 · 2026Runtime 1 min

On Declassified, We Examine A Central Intelligence Agency Record

U.S. public record · FOIAUpdated November 5, 2026

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◆ BLUF — The short version

On Declassified, we examine a Central Intelligence Agency record concerning Chinese military movements, dated approximately August sixteenth, nineteen-fifty. com. This document was released under the Freedom of Information Act and made public by The Black Vault. Its declassification authority is not specified on the document itself.

Date: NOV 5 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source document

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On Declassified, we examine a Central Intelligence Agency record concerning Chinese military movements, dated approximately August sixteenth, nineteen-fifty. This declassified document is available from documents2.theblackvault.com. This document was released under the Freedom of Information Act…

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What was On Declassified, We Examine A Central Intelligence Agency Record about?: On Declassified, we examine a Central Intelligence Agency record concerning Chinese military movements, dated approximately August sixteenth, nineteen-fifty. com. This document was released under the Freedom of Information Act and made public by The Black Vault. Its declassification authority is not specified on the document itself.
Why was this case declassified?: This material entered the public record through the U.S. declassification and Freedom of Information Act (FOIA) process. Storyflo narrates it directly from the public release.

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