Operation Paperclip was a secret United States intelligence program in which more than 1,600 German scientists, engineers, and technicians were taken from the former Nazi Germany to the U.S. for government employment after the end of World War II in Europe, between 1945 and 1959. Conducted by the Joint Intelligence Objectives Agency (JIOA), it was largely carried out by special agents of the U.S. Army's Counterintelligence Corps (CIC). Many of these personnel were former members and some were former leaders of the Nazi Party.
In February 1945, Supreme Headquarters Allied Expeditionary Force (SHAEF) set up T-Force, or Special Sections Subdivision, which grew to over 2,000 personnel by June. T-Force examined 5,000 German targets, seeking expertise in synthetic rubber and oil catalysts, new designs in armored equipment, V-2 (rocket) weapons, jet and rocket propelled aircraft, naval equipment, field radios, secret writing chemicals, aero medicine research, gliders, and "scientific and industrial personalities".
When large numbers of German scientists began to be discovered by the advancing Allied forces in late April 1945, Special Sections Subdivision set up the Enemy Personnel Exploitation Section to manage and interrogate them. The Enemy Personnel Exploitation Section established a detention center, DUSTBIN, first in Paris and later in Kransberg Castle outside Frankfurt. The U.S. Joint Chiefs of Staff (JCS) established the first secret recruitment program, called Operation Overcast, on July 20, 1945, initially "to assist in shortening the Japanese war and to aid our postwar military research". The term "Overcast" was the name first given by the German scientists' family members for the housing camp where they were held in Bavaria. In late summer 1945, the JCS established the JIOA, a subcommittee of the Joint Intelligence Community, to directly oversee Operation Overcast and later Operation Paperclip. The JIOA representatives included the army's director of intelligence, the chief of naval intelligence, the assistant chief of Air Staff-2 (air force intelligence), and a representative from the State Department. In November 1945, Operation Overcast was renamed Operation Paperclip by Ordnance Corps officers, who would attach a paperclip to the folders of those rocket experts whom they wished to employ in the United States.
The project was not initially targeted against the Soviet Union; rather the concern was that German scientists might emigrate and continue their research in countries that remained neutral during the war. Much U.S. effort was focused on Saxony and Thuringia, which on July 1, 1945, became part of the Soviet occupation zone. Many German research facilities and personnel had been evacuated to these states before the end of the war, particularly from the Berlin area. The USSR then relocated more than 2,200 Nazi specialists and their families—more than 6,000 people—with Operation Osoaviakhim during one night on October 22, 1946.
In a secret directive circulated on September 3, 1946, President Truman officially approved Operation Paperclip and expanded it to include 1,000 German scientists under "temporary, limited military custody". News media revealed the program as early as December 1946.
Osenberg List
In the later part of World War II, Germany was at a logistical disadvantage, having failed to conquer the USSR with Operation Barbarossa (June–December 1941), and its drive for the Caucasus (June 1942 – February 1943). The failed conquest had depleted German resources, and its military–industrial complex was unprepared to defend the Greater Germanic Reich against the Red Army's westward counterattack. By early 1943, the German government began recalling from combat a number of scientists, engineers, and technicians to work in research and development to bolster German defense for a protracted war with the USSR. The recall from frontline combat included 4,000 rocketeers returned to Peenemünde, in northeast coastal Germany.
The Nazi government's recall of their now-useful intellectuals for scientific work first required identifying and locating the scientists, engineers, and technicians, then ascertaining their political and ideological reliability. , the engineer-scientist heading the Wehrforschungsgemeinschaft (Defense Research Association), recorded the names of the politically cleared men to the Osenberg List, thus reinstating them to scientific work.