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ACUFO is my comprehensive catalog of cases of encounters between aircraft and UFOs, whether they are "explained" or "unexplained".

The ACUFO catalog is made of case files with a case number, summary, quantitative information (date, location, number of witnesses...), classifications, all sources mentioning the case with their references, a discussion of the case in order to evaluate its causes, and a history of the changes made to the file.

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Sarrebourg, France, on December 23, 1944:

Case number:



In the 1970 - 1990, Citizens Against UFO Secrecy (CAUS) was a lobby aimed at obtaining declassified documents on UFOS from the US Government.

In their newsletter of September 1992, their editor Barry Greenwood explained that he had searched the National Archives in Suitland, Maryland, USA, to find more documents on the Foo-Fighters emanating from of the 415th Night Fighter Squadron, and had found some, mainly "Mission Reports".

Barry Greenwood explained that some of the reports he found were impossible to asses, as sometimes it was not specified if the phenomena observed were on the ground or in the air, for example.

One of the cases found was that on December 23, 1944, between 05:35 a.m. and 07:50 a.m., Mission 8, in patrol on Sarrebourg, saw lights from a plane and an orange glow; they thought it possible that it was a German jet aircraft.


Temporal data:

Date: December 23, 1944
Time: Night.
Duration: ?
First known report date: 1992
Reporting delay: Hours, days.

Geographical data:

Country: France
State/Department: Moselle
City: Sarrebourg

Witnesses data:

Number of alleged witnesses: 1 to 3
Number of known witnesses: ?
Number of named witnesses: 0

Ufology data:

Reporting channel: Military operations report.
Visibility conditions: Night.
UFO observed: ?
UFO arrival observed: ?
UFO departure observed: ?
UFO action: ?
Witnesses action:
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Sensors: [X] Visual: 1 to 3
[ ] Airborne radar: Not reported.
[ ] Directional ground radar: Not reported.
[ ] Height finder ground radar:
[ ] Photo:
[ ] Film/video:
[ ] EM Effects:
[ ] Failures:
[ ] Damages:
Hynek: NL
Armed / unarmed: Armed, machine guns and / or 20 mm cannons.
Reliability 1-3: 3
Strangeness 1-3: 1
ACUFO: Possible plane.



The Citizens Against UFO Secrecy (CAUS) newsletter reported that on September 3, 1992, their editor Barry Greenwood searched the National Archives in Suitland, Maryland, USA, to find more documents on the Foo-Fighters emanating from of the 415th Night Fighter Squadron, and had found some, mainly "Mission Reports". Barry Greenwood reported:


Archives personnel provided a large cardboard box holding three feet of file folders of the 415th NFS and affiliated bomber groups. The period covered was late September 1944 - April 1945. It was obvious that I would spend at least a full day scanning this bunch. The records were not in the best condition, a fact which should be of great concern to those interested in the contents of old files, not just on this but on any subject. Many of the papers were onion-skin copies, very fragile and yellowing. Other reports were on coarse, brown paper which was very brittle, flakes of which were coming off on my hands. It was no longer surprising why quite often when CAUS would request and receive government files the copies were difficult, and sometimes impossible, to read. We are in a race against time as many government records are literally self-destructing on the shelf. With the millions of copies for which the National Archives is responsible, there is simply not enough staff or resources to take care of it all.

What also became clear is that the staff of the National Archives are not absolute authorities on the records that we have obtained regarding UFOs. The response I had to a request for help in locating a particular Air Force document with an identifying number was, "Good luck, we don't know." Not that they were being fresh but that the Air Force had lost the inventory to that group of documents. I had a new appreciation for the time delays in responding to FOIA requests as well. It took me the best part of a day just to scan one box thoroughly. I was in a room with about thirty to forty people, all of whom had their own agenda and own piles of paper to scan. Factor in mail requests and the demands on the staff must be terrific. I heard a complaint by one of having to pull hundreds of boxes himself to fulfill researchers’ requests just for that day.

The 415th's mission reports tended to be brief in their descriptions of everything. There were reports of aircraft destroyed, buildings bombed, flak, vehicles destroyed; etc. Then, scattered amongst the information, were reports of strange lights in the sky.

He then gave the 15 such cases he found, including:

December 22/23, 1944 - Mission 8 - 0535-0750 - Patrol Sarrebourg - R-4559. Saw lights from plane and orange glow. Thought it possible jet a/c.

Greenwood noted:

One frustrating feature of these reports is their brevity. It is difficult to form a hypothesis on the origin of Foo-Fighters when such fragmentary information is available. It is sometimes hard to tell whether reports of "lights" by the pilots were in the air or on the ground so one should exercise caution when reading reports where this is not clear.

Aircraft information:

The Bristol Type 156 "Beaufighter", nicknamed "Beau", was a British multi-role aircraft developed during WWII. It was originally conceived as a heavy fighter variant of the Bristol Beaufort torpedo bomber; it proved to be an effective night fighter, which came into service with the Royal Air Force (RAF) during the Battle of Britain.

Originally, armament consisted of four 20mm cannons and six 0.303-in machine-guns but many variants were built; for example, versions had the ability to additionally carry eight rocket projectiles, some had a Vickers 'K' gun, Beaufighter TF.Mk X was used for anti-shipping operations.

The Beaufighter Mk VIF was fitted with the Mark VIII radar.

Below: Beaufighter Mk VIF of the 415th Night Fighter Squadron.

Beaufighter VIF 415th NFS.

The Beaufighters served with the US Army Air Force until the end of the war, but most were replaced by the P-61 "Black Widow" beginning on March 20, 1945.



This is one of the reports where Barry Greenwood was right to comment on the brevity and lack of information; here it is unclear whether the "airplane lights" and the "orange glow" were concomitant or whether they were two separate sightings.

We can even think that the crew had seen on the one hand a plane in flight, and on the other hand an orange light on the ground.

If the two were concomitant, I would just like to remind that the exhaust flames of a German jet plane, which would necessarily have been a Messerchmitt Me-262, were barely visible, only from the rear, that they were two, and that their color was not orange but whitish - bluish.


Possible plane.

Sources references:

* = Source is available to me.
? = Source I am told about but could not get so far. Help needed.

File history:


Main author: Patrick Gross
Contributors: None
Reviewers: None
Editor: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross November 18, 2021 Creation, [jce1].
1.0 Patrick Gross November 18, 2021 First published.

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This page was last updated on November 18, 2021.