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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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The Rhine, on December 5, 1944:

Case number:



Apparently, in the 2007 book "Strange Company - Military Encounters with UFOs in World War II" by Keith Chester, there was a report of December 5, 1944, in the German part of the Rhine River area, of an "alleged aircraft that climbed out of range in nothing flat."


Temporal data:

Date: December 5, 1944
Time: ?
Duration: ?
First known report date: 2007
Reporting delay: Hours, 6 decades.

Geographical data:

Country: Germany
City: The Rhine valley.

Witnesses data:

Number of alleged witnesses: ?
Number of known witnesses: ?
Number of named witnesses: 0

Ufology data:

Reporting channel: UFO book Keith Chester.
Visibility conditions: ?
UFO observed: Yes.
UFO arrival observed: ?
UFO departure observed: Yes.
UFO action: Flew up fast.
Witnesses action:
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: Puzzled.
Witnesses interpretation: Aircraft?


Sensors: [X] Visual: ?
[ ] Airborne radar:
[ ] Directional ground radar:
[ ] Height finder ground radar:
[ ] Photo:
[ ] Film/video:
[ ] EM Effects:
[ ] Failures:
[ ] Damages:
Hynek: ?
Armed / unarmed: ?
Reliability 1-3: 1
Strangeness 1-3: 2
ACUFO: Possible enemy aircraft.


(Ref. nip1:) "THE NICAP WEBSITE":

(1944) Dec. 5, 1944; Rhine River area, Germany

Alleged aircraft that climbed out of range in nothing flat. (Page 96 Ref.1)

The reference 1 is described at the end of the document as "Strange Company (2007), Keith Chester".


Date: Dec. 5, 1944

Location: Rhine River area, Germany


Summary: Alleged aircraft that climbed out of range in nothing flat.


Aircraft information:

No information is provided.


The information is very thin. For example, I have no primary source, and it is not certain that this sighting was a pilot sighting, although it is temporaly and geographically located among the numerous sightings by the crews of the 415th Night Fighters Squadron.

Worse, the report tells of an "alleged aircraft" and I do not know whether the "alleged" word was in an original report ofr added by a ufologist expressing his own doubts.

Thus I think that this was possibly a report on an enemy aircraft.


Possible enemy aircraft.

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 3, 2023 Creation, [nip1], [tai1].
1.0 Patrick Gross November 3, 2023 First published.

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This page was last updated on November 3, 2023.