Foo Fighter Sightings in World War II

Beginning in late 1944, aircrews of the United States Army Air Forces and Royal Air Force reported encounters with unusual aerial objects over the European theatre of war. The sightings, termed foo fighters, involved luminous spheres that tracked aircraft without hostile intent.

Sightings

The sightings were concentrated among night fighter squadrons, particularly the 415th Night Fighter Squadron operating over the Rhine Valley in western Germany. The phenomena typically manifested as luminous spheres — red, orange, or green — that appeared to track alongside aircraft at speeds exceeding 300 kilometres per hour.

Origin of the Term

The term foo fighter originated with radar operator Donald J. Meiers of the 415th Night Fighter Squadron, who borrowed the expression from the popular comic strip Smokey Stover. Following a mission debriefing on November 27, 1944, in which pilots Lieutenant Ed Schleuter and intelligence officer Lieutenant Fred Ringwald described encountering a red ball of fire, Meiers reportedly exclaimed that it was another of those foo fighters, and the name stuck.

Characteristics

The objects demonstrated characteristics that puzzled experienced aircrews.
- They appeared singly or in formations of up to ten.
- Matched aircraft speed effortlessly.
- Occasionally performed sudden manoeuvres that no known aircraft could replicate.
- Never appeared on radar.
- Never exhibited hostile behaviour — no weapons were fired and no damage was inflicted.
Reports came from both the European and Pacific theatres, suggesting the phenomenon was not confined to a single geographic area.

Initial Reactions

Military intelligence initially suspected the objects were a German secret weapon. German and Japanese records later revealed that Axis pilots had reported identical phenomena and assumed them to be Allied technology.

Investigations

Post-war investigations, including those referenced by the Robertson Panel in 1953, explored explanations ranging from St. Elmo's fire and ball lightning to reflections from ice crystals. None satisfactorily accounted for all reported characteristics.

The foo fighter reports represent some of the earliest systematic military documentation of unidentified aerial phenomena, predating the modern UFO era that began with Kenneth Arnold's 1947 sighting. Their significance lies in the simultaneous reporting by opposing sides in a global conflict, each independently attributing the phenomena to enemy technology. The inability of wartime intelligence services on both sides to identify the objects suggests the phenomena were genuinely anomalous rather than misidentified conventional technology.