What did the declassified documents reveal?

This declassified Central Intelligence Agency record from September third, nineteen-fifty-four, reports on a possible imminent attack on the Quemoy Islands. This record is available via The Black Vault at documents2.theblackvault.com. This document was approved for release on February sixth, two-thousand-eight, under the declassification authority of the Central Intelligence Agency. The document, an Intelligence Memorandum from the Office of Current Intelligence, is titled "Possible Imminent Attack on Quemoy Islands" and is addressed to the Deputy Director, Intelligence. It states: "During the early afternoon of three September, an estimated sixty Chinese Communist one-hundred-twenty-millimeter guns opened heavy fire on the northeast, north, and west sectors of Quemoy (Chinmen), the larger of two Nationalist-held islands in Amoy harbor directly west of Formosa. Barrages were also laid down on Little Quemoy and on Nationalist naval vessels in the area. Heavy firing continued for at least three hours, although by the evening of three September it was reported to be diminishing. Two persons (presumably Americans) of the American military advisory group are reported killed, and arrangements are being made to evacuate sixteen other Americans by air." The memorandum continues: "Since early July, and particularly in recent days, Chinese Communist propaganda has been threatening to 'liberate' the offshore islands as well as Formosa. Although certain individual reports have not been confirmed, the possibility of an early Chinese Communist attack on Quemoy has been noted for some days. It has been estimated that a successful Chinese Communist attack on Quemoy would require about one-hundred-fifty-thousand troops (three armies), although the Communists themselves might estimate that fewer would do. There are three Communist armies known to be located within one-hundred-fifty miles of Quemoy – one each at Foochow, Swatow, and Amoy, and the reported movement of additional troops would enable the Communists easily to assemble the necessary forces from these units." Regarding air and naval support, the document notes: "Chinese Communist air units as presently disposed could not provide effective air support to an attack on Quemoy; the nearest units are based in the Shanghai area to the north, at Canton in the south, and at Nanchang to the west. There are as yet no indications that a movement of air units to points nearer Quemoy is taking place; but this could be done with little warning. Chinese Communist naval strength in the Amoy area is negligible, amounting to a few small patrol vessels. Large numbers of junks and fishing vessels, however, provide an undetermined capability for amphibious lift." The memorandum assesses Nationalist strength: "Chinese Nationalist Strength on Quemoy, the most heavily-defended island outpost, amounts to some forty-three thousand regular troops plus guerrillas. The regular forces are American-trained and newly-equipped and have…

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-398Declassified

Filed SEP 30 · 2026Runtime 1 min

CIA Possible Imminent Attack On Quemoy Islands

U.S. public record · FOIAUpdated September 30, 2026

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◆ BLUF — The short version

This declassified Central Intelligence Agency record from September third, nineteen-fifty-four, reports on a possible imminent attack on the Quemoy Islands. com. This document was approved for release on February sixth, two-thousand-eight, under the declassification authority of the Central Intelligence Agency.

Date: SEP 30 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source document

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Episode notes

This declassified Central Intelligence Agency record from September third, nineteen-fifty-four, reports on a possible imminent attack on the Quemoy Islands. This record is available via The Black Vault at documents2.theblackvault.com. This document was approved for release on February sixth…

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What was CIA Possible Imminent Attack On Quemoy Islands about?: This declassified Central Intelligence Agency record from September third, nineteen-fifty-four, reports on a possible imminent attack on the Quemoy Islands. com. This document was approved for release on February sixth, two-thousand-eight, under the declassification authority of the Central Intelligence Agency.
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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