1. Army observers' report of Operation Highjump: Task Force 68, U.S. Navy Author(s): United States. War Department. General Staff, author, issuing body. Publication: Washington, D.C. : War Department, September 1947 Subject(s): Cold TemperatureMilitary ScienceProtective ClothingMotor VehiclesExpeditionsWorld War IIAntarctic RegionsUnited States. Navy. Atlantic Fleet. Task Force 68.Operation HighjumpByrd Antarctic Expedition.