Operation Paperclip

In the final months of World War II, US intelligence teams fanned out across Germany with a specific mission. They were not looking for war criminals. They were looking for scientists. The Joint Intelligence Objectives Agency had prepared a list of German researchers whose expertise in rocketry, aviation, medicine, chemistry, and related fields was considered valuable enough to justify bringing them to the United States regardless of what they had done during the war.

The program that formalized this effort was called Operation Paperclip. It ran from 1945 to 1959 and brought over 1,600 German scientists, engineers, and technicians to work for US government agencies and defense contractors. Their Nazi party memberships were removed from their dossiers. Their involvement in war crimes was suppressed. Their records were sanitized by US government officials to make them eligible for immigration under laws that would have excluded them if their actual histories were known.

President Truman had specifically prohibited the recruitment of anyone who was a member of the Nazi party or who had been more than a nominal participant in its activities. The Joint Intelligence Objectives Agency circumvented this order by altering the recruits' records before submitting them for presidential approval.

Wernher von Braun is the most prominent name associated with Operation Paperclip. He led the development of the V-2 rocket program for Nazi Germany. The V-2 was produced using slave labor from the Mittelwerk underground factory, where prisoners from concentration camps worked under conditions that killed thousands. Von Braun visited the factory. The extent of his knowledge of conditions there has been debated. He was brought to the United States, had his SS membership and his knowledge of slave labor conditions removed from his file, and went on to lead NASA's rocket development program. He was instrumental in the Apollo missions.

Hubertus Strughold was brought over as an aviation medicine specialist and became known as the father of space medicine. Declassified documents subsequently revealed he had participated in medical experiments on concentration camp prisoners at Dachau. He was never prosecuted. He received a lifetime achievement award from the Space Medicine Association in 1963, which was later renamed to remove his association.

Walter Schreiber was the Surgeon General of the German Army. He was brought to the United States and employed by the US Air Force at a research facility in Texas. When his involvement in human medical experiments on concentration camp prisoners was exposed by a journalist in 1952, he was quietly moved to Argentina rather than prosecuted.

The Paperclip scientists contributed to US programs across multiple domains. Rocketry and space research through what became NASA. Aviation medicine and high-altitude research. Chemical and biological weapons development. Psychological research programs. The connection between Paperclip scientists and programs that later became classified has been partially documented and partially obscured by the same record sanitization that enabled their immigration.

The declassified Paperclip files establish who was brought over and what their stated assignments were. They do not establish the full scope of what those scientists contributed to classified research during their employment. Several Paperclip scientists worked for or alongside programs that were themselves classified. The intersection of their wartime research methods and postwar classified US programs has not been fully documented in any public record.

The Joint Intelligence Objectives Agency assigned case officers to each recruited scientist. The case officers reviewed the scientists' actual wartime records, identified disqualifying information, and prepared new dossiers that omitted it. The new dossiers were the ones submitted through official channels. The original records were retained separately and eventually declassified, which is how the sanitization became known.

The process required active participation from multiple levels of the US government. The scientists could not have entered the country under their actual records. Someone decided their value exceeded the legal and ethical constraints on their admission. That decision was made at the institutional level and executed through a systematic falsification of official government documents.

Operation Paperclip is fully declassified. The records are at the National Archives. The sanitization is documented. The scientists are named. What remains partially obscured is the full downstream impact of their work, which classified programs they contributed to, which research methods they brought with them, and what those methods produced inside programs that have not been fully declassified. The entry point is documented. The full trajectory is not.