During the Second World War, unusual sightings in the skies above Europe were often interpreted as novel Nazi technology. In the first years of the Cold War, Western nations speculated that unusual sightings might stem from Soviet deployment of captured or reverse-engineered Nazi technology.
Foo fighters In World War II, the so-called "
foo fighters", a variety of unusual and anomalous aerial phenomena, were witnessed by both Axis and Allied personnel. While some foo fighter reports were dismissed as the misperceptions of troops in the heat of combat, others were taken seriously, and leading scientists such as
Luis Alvarez began to investigate them. In at least some cases, Allied intelligence and commanders suspected that foo fighters reported in the European theater represented advanced German aircraft or weapons, particularly given that Germans had already developed such technological innovations as
V-1 and
V-2 missiles and the first operational jet-powered
Me 262 fighter planes. A minority of foo fighters seemed to have inflicted damage to allied aircraft.
Ghost rockets Ghost rockets were
rocket- or
missile-shaped
unidentified flying objects sighted in 1946, mostly in
Sweden and nearby
Scandinavian countries, including
Finland. The first reports of ghost rockets were made on February 26, 1946, by Finnish observers. About 2,000 sightings were logged between May and December 1946, with peaks on 9 and 11 August 1946. Two hundred sightings were verified with
radar returns, and authorities recovered physical fragments which were attributed to ghost rockets. Investigations concluded that many ghost rocket sightings were probably caused by
meteors. For example, the peaks of the sightings, on 9 and 11 August 1946, also fall within the peak of the annual
Perseid meteor shower. However, most ghost rocket sightings did not occur during meteor shower activity, and furthermore displayed characteristics inconsistent with meteors, such as reported maneuverability. Debate continues as to the origins of the unidentified ghost rockets. In 1946, however, it was thought likely that they originated from the former
German rocket facility at Peenemünde, and were long-range tests by the Soviets of captured German
V-1 or
V-2 missiles, or perhaps another early form of
cruise missile because of the ways they were sometimes seen to maneuver. This prompted the
Swedish Army to issue a directive stating that newspapers were not to report the exact location of ghost rocket sightings or any information regarding the direction or speed of the object. This information, they reasoned, was vital for evaluation purposes to the nation or nations assumed to be performing the tests.
Flying discs Similar sentiments regarding German technology resurfaced during the
1947 flying disc craze after
Kenneth Arnold's widely reported close encounter with nine crescent-shaped objects moving at a high velocity. Personnel of
Project Sign, the first U.S. Air Force UFO investigation group, noted that the advanced
flying wing aeronautical designs of the German
Horten brothers were similar to some UFO reports. In 1959, Captain
Edward J. Ruppelt, the first head of
Project Blue Book (Project Sign's follow-up investigation) wrote: While these early speculations and reports were limited primarily to military personnel, the earliest assertion of German flying saucers in the
mass media appears to have been an article that appeared in the Italian newspaper ''
Il Giornale d'Italia'' in early 1950. Written by Professor
Giuseppe Belluzzo, an Italian scientist and a former Italian Minister of National Economy under the Mussolini regime, it claimed that "types of flying discs were designed and studied in Germany and Italy as early as 1942". Belluzzo also expressed the opinion that "some great power is launching discs to study them". where the BMW Flugelrad was stored under occupation During the same month, German technician
Rudolf Schriever (1909–1953) gave an interview to German news magazine
Der Spiegel in which he claimed that he had designed a craft powered by a circular plane of rotating turbine blades in diameter. He said that the project had been developed by him and his team at
BMW's Prague works until April 1945, when he fled to
Czechoslovakia. His designs for the disk and a model were stolen from his workshop in Bremerhaven-Lehe in 1948 and he was convinced that Czech agents had built his craft for "a foreign power". In a separate interview with
Der Spiegel in October 1952, he said that the plans were stolen from a farm he was hiding in near
Regen on 14 May 1945. There are other discrepancies between the two interviews that add to the confusion. In 1953, when
Avro Canada announced that it was developing the VZ-9-AV
Avrocar, a circular jet aircraft with an estimated speed of , German engineer Georg Klein claimed that such designs had been developed during the Nazi era. Klein identified two types of supposed German flying disks: • A non-rotating disk developed at
Breslau by
V-2 rocket engineer Richard Miethe, which was captured by the Soviets, while Miethe fled to the US via France, and ended up working for Avro. • A disk developed by Rudolf Schriever and Klaus Habermohl in Prague, which consisted of a ring of moving turbine blades around a fixed cockpit. Klein claimed that he had witnessed this craft's first crewed flight on 14 February 1945, when it managed to climb to in 3 minutes and attained a speed of in level flight. Miethe claimed he had worked on the V-2 program but no corroborating evidence exists. Georg Klein claimed the engineer had escaped capture by the Soviets in Breslau by flying out in a
Messerschmitt Me 163 Komet, which would have been impossible. There is no evidence that Habermohl even existed. Rudolf Schriever claimed he had worked for Heinkel as a test pilot and engineer between 1940 and 1941, but this has never been corroborated. In post-war Germany, Schriever drove supply trucks for the US Army but told newspaper reporters that delegates from foreign powers were constantly making him offers regarding his wartime projects. Aeronautical engineer
Roy Fedden remarked that the only craft that could approach the capabilities attributed to flying saucers were those being designed by the Germans towards the end of the war. Fedden (who was also chief of the technical mission to Germany for the Ministry of Aircraft Production) stated in 1945: Fedden also added that the Germans were working on several very unusual aeronautical projects, though he did not elaborate upon his statement. ==Nazi UFO conspiracy theories==