Operation Windmill

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Activities in Antarctica During the 20th Century
International agreements
Antarctic Treaty System
British Commonwealth activities
Scott's 1st expedition (1901-04)
Shackleton's 1st expedition (1907-09)
Scott's 2nd expedition (1910-13)
Mawson's 1st expedition (1911-1914)
Shackleton's 2nd expedition (1914-17)
Shackleton's 3rd expedition (1921-22)
Mawson's 2nd expedition (1929-31)
The Graham Land Expedition (1934-37)
Operation Tabarin (1943-45)
Commonwealth Trans-Antarctic Expedition (Fuchs-Hillary) (1955-58)
French activities
Charcot's 1st expedition (1903-05)
Charcot's 2nd expedition (1908-10)
German activities
Drygalski's expedition (1901-03)
Filchner's expedition (1911-12)
The New Swabia Expedition (1938-39)
Norwegian activities
Amundsen's expedition (1910-12)
U.S. activities
Operation Highjump (1946-47)
Operation Windmill (1947-48)
Ronne's expedition (1947-48)
Operation Deep Freeze (1955-56)

Operation Windmill (OpWml) was a U.S. Navy exploration and training mission to Antarctica in 1947-1948. This operation was a follow up to the First Antarctic Development Project which was called Operation Highjump. The expedition was commanded by Commander Gerald L. Ketchum, and his flagship of the expedition was USS Burton Island.