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Operation Highjump

1946Claims checked

In 1946 and 1947 the U.S. Navy sent 13 ships, 33 aircraft and about 4,700 men to Antarctica under Richard Byrd, the largest Antarctic expedition ever, later the source of persistent hidden base legends.

The story

Operation Highjump was the largest expedition ever sent to Antarctica. Officially Task Force 68, it left the United States in late 1946 under Rear Admiral Richard Cruzen, with the famous polar aviator Rear Admiral Richard E. Byrd as officer in charge. Thirteen ships, including an aircraft carrier and a submarine, and about 25 to 33 aircraft carried about 4,700 men to the coast of the continent. Through the southern summer of 1946 and 1947 they set up a base called Little America IV on the Ross Ice Shelf, flew long photographic flights over the coast and interior, and mapped vast areas never seen before.

The Navy's orders were practical: train men and test equipment in extreme cold, study whether bases could be built on the ice, and gather data for mapping and science. A less publicized aim was to strengthen any future American claim to Antarctic territory. Four men died, three in the crash of a seaplane in a whiteout and one in an accident unloading a ship, and the expedition ended early in February 1947 as winter approached. Because it was big, military and ended ahead of schedule, later writers built a legend that it was really a war against a hidden Nazi base or something stranger, a story the records do not support.

Why it mattered

  • Aerial photographs from Highjump gave the first detailed maps of long stretches of the Antarctic coast.
  • The expedition's experience fed the Navy's later Operation Deep Freeze and the permanent American bases built for the International Geophysical Year of 1957 and 1958.
  • Its early end and a misread Byrd interview became the seed of enduring Nazi base, UFO and hollow Earth theories.

Sources

  1. Operation High Jump Britannica
  2. Operation Hi-Jump: Exploring Antarctica with the U.S. Navy U.S. National Archives
  3. Hitler's Secret Antarctic Expedition History.com
  4. Admiral Byrd and Nazi Cobblers Strange History
  5. Double Check: Operation Highjump Logically Facts

Drafted by AI (Claude) from the sources above and checked against them by AI; no historian has reviewed this page. Spot a mistake? Suggest a correction. How pages are made

Claims checked against the record

Consensus: Navy records show Highjump was a large training, mapping and sovereignty expedition that ended early because of the approaching Antarctic winter. Claims that it fought a secret Nazi or alien base rest on a mistranslated 1947 interview and have no documentary support.

Highjump was a training, mapping and sovereignty missionEstablished
Official orders listed cold weather training, testing equipment, studying base sites and collecting scientific and mapping data, and a quieter goal of consolidating potential U.S. claims. Navy histories and photographs document the work.
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The expedition ended early because of combat lossesDebunked
The four deaths were accidents, three in a seaplane crash in a whiteout and one while unloading a ship, and the Navy cited the coming winter for the early end. More than ten journalists aboard sent thousands of dispatches and reported no fighting.
Where this claim comes from, and its rebuttals
Byrd warned of craft that could fly from pole to pole at incredible speedsDebunked
The Spanish original of his 1947 El Mercurio interview warned that the United States could be attacked by planes flying over one or both poles, a point about Soviet bombers. The UFO wording comes from later mistranslations.
Where this claim comes from, and its rebuttals
Highjump was sent to destroy a secret Nazi base in New SwabiaUnsupported
A German expedition did survey part of Antarctica in 1938 and 1939, but historians find no evidence of later German activity there, and Highjump worked far from that region. The base story appears in postwar books, not in any archive.
Where this claim comes from, and its rebuttals
Byrd's secret diary describes a flight into a hollow EarthDebunked
The diary text appeared decades after Byrd's death and contradicts his documented flights. The Byrd Polar and Climate Research Center, which holds his papers, says it has no records supporting such claims.
Where this claim comes from, and its rebuttals

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