In May 1945, the U.S. Navy "received in custody" Dr. Herbert A. Wagner, the inventor of the Hs 293 missile; for two years, he first worked at the Special Devices Center, at Castle Gould and at Hempstead House, Long Island, New York; in 1947, he moved to the Naval Air Station Point Mugu.
In August 1945, Colonel Holger Toftoy, head of the Rocket Branch of the Research and Development Division of the U.S. Army's Ordnance Corps, offered initial one-year contracts to the rocket scientists; 127 of them accepted. In September 1945, the first group of seven rocket scientists arrived at Fort Strong, located on Long Island in Boston harbor: Wernher von Braun, Erich W. Neubert, Theodor A. Poppel, August Schulze, Eberhard Rees, Wilhelm Jungert, and Walter Schwidetzky.
Beginning in late 1945, three rocket-scientist groups arrived in the United States for duty at Fort Bliss, Texas, and at White Sands Proving Grounds, New Mexico, as "War Department Special Employees".
In 1946, the United States Bureau of Mines employed seven German synthetic fuel scientists at a Fischer-Tropsch chemical plant in Louisiana, Missouri.
In early 1950, legal U.S. residency for some of the Project Paperclip specialists was effected through the U.S. consulate in Ciudad Juárez, Chihuahua, Mexico; thus, Nazi scientists legally entered the United States from Latin America.
Eighty-six aeronautical engineers were transferred to Wright Field, where the United States had Luftwaffe aircraft and equipment captured under Operation Lusty (Luftwaffe Secret Technology).
The United States Army Signal Corps employed 24 specialists – including the physicists Georg Goubau, Gunter Guttwein, Georg Hass, Horst Kedesdy, and Kurt Lehovec; the physical chemists Rudolf Brill, Ernst Baars, and Eberhard Both; the geophysicist Helmut Weickmann; the optician Gerhard Schwesinger; and the engineers Eduard Gerber, Richard Guenther, and Hans Ziegler.
In 1959, 94 Operation Paperclip men went to the United States, including Friedwardt Winterberg and Friedrich Wigand. Throughout its operations to 1990, Operation Paperclip imported 1,600 men, as part of the intellectual reparations owed to the United States and the UK, some $10 billion in patents and industrial processes.
During the decades after they were included in Operation Paperclip, some scientists were investigated because of their activities during World War II. Arthur Rudolph was deported in 1984, but not prosecuted, and West Germany granted him citizenship. Similarly, Georg Rickhey, who came to the United States under Operation Paperclip in 1946, was returned to Germany to stand trial at the Dora Trial in 1947; he was acquitted, and returned to the United States in 1948, eventually becoming a U.S. citizen. The aeromedical library at Brooks Air Force Base in San Antonio, Texas, had been named after Hubertus Strughold in 1977. However, it was later renamed because documents from the Nuremberg War Crimes Tribunal linked Strughold to medical experiments in which inmates from Dachau were tortured and killed.
http://en.wikipedia.org/wiki/Operation_Paperclip
The Soviet Union exploited the technical expertise of the German specialists who were resident in the Soviet occupation zone of Germany as well as POWs held in the USSR. In October 1946 the Soviet NKVD forcibly deported from East Germany "a few hundred" selected German experts to work in the USSR. They were held under favorable conditions and most were released by 1948. They worked in the aviation industry and the development of submarines. A selected few remained in the USSR until the early 1950s including German scientists who worked in the Soviet Union on the development of ballistic missiles, Helmut Gröttrup was among this group. They were not directly involved in the missile program but were only consulted by Soviet engineers.