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The Office of Strategic Services (OSS) formed because of the ardent urging of President Franklin D. Roosevelt's adviser Colonel William Donovan. Centralized intelligence operations and the strategic use of psychological warfare are two highlights of the evolution desired by Donovan and his supporters that were to culminate in a wartime intelligence group. However, the existing military and intelligence structure were not willing to be tools for Donovan's ambitions and wanted to maintain authority over the operations leading to future conflicts. The OSS was one of multiple incarnations of civilian and military collaborative intelligence efforts that would evolve into later military Special Forces Units, U.S. Special Operations Command (USSOCOM), and the Central Intelligence Agency.

OSS Research Sections
Historical Structure: A review of the Office of Strategic Services (OSS) illustrated with official files. 

Policy and Resource Documents: Government reports on OSS policy, security protocols, and operational references paired with some internal documents.