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Documents and compiled files on various Office of Strategic Services policies and internal reference materials. The documents offer a view into the historical policy making and internal reference materials created by the OSS for its varied operations.

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Directive of the US Joints Chiefs of Staff: An order authored by the US military's leadership to establish OSS policy for conducting operations that included psychological warfare, intelligence gathering, and sabotage.

Maritime Unit Field Manual: This document was issued to OSS agents to present the organizational requirements for those employees assigned to the specialized Maritime Unit groups. These groups provided training for undertaking all water-based operations that could range from the clandestine infiltration of forces to naval sabotage.

Morale Operations Field Manual: This document was issued to OSS agents to present the organizational requirements for those employees assigned to groups undertaking morale operations. Officials entrusted such groups to undertake projects that include "all measures of subversion other than physical used to create confusion and division, and to undermine the morale and the political unity of the enemy".

Operational Groups Field Manual: A document issued to OSS field agents that presents the organizational requirements for those employees assigned to operational field groups. Officials entrusted these groups with organizing and training forces to conduct guerilla warfare and support all viable resistance organizations.

Special Operations Field Manual: A document issued to OSS field agents that presents the organizational requirements for those employees assigned to special operations groups. These operations might include sabotage or logistical support of resistance organizations but they reportedly left guerrilla warfare to operational groups.

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OSS Glossary and Abbreviations: A list of various terms and abbreviations used within related intelligence documents and operations.