Operation HighJump:
Goal: search for Nazi military bases at Antartica
1946: Operation HighJump with Admiral Richard E Byrd* Allied military expedition (4700 men, 13 ships and 33 aircraft) to Antartica.
* Conflict/battle between Allies & UFO's, lost by the Allies
He discovered a highly evolved city with aliens called: Agartha. A secret journal revealing all of this was found by his son after the Admiral's death...
** Invading Antarctica: The Secret South Pole Colony:
*** Operation Highjump and the UFO connection: https://www.bibliotecapleyades.net/antarctica/antartica11.htm