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// Declassified WWII Field Documents

Office of Strategic Services
Declassified Field Manuals

The OSS, the WWII precursor to the CIA and modern U.S. Special Operations, produced field manuals for sabotage, morale operations, and irregular warfare. These documents show how the U.S. organized clandestine activities in occupied Europe and Asia, and illuminate the origins of today’s irregular warfare concepts. Each card records the document’s originating body, date, classification history and file size, with any handling restriction quoted. Presented for historical study and academic context.

8 Field Manuals
4 War Reports
6 Recommended Books
1941–45 Wartime Origin
Sources: NARA / CIA CREST / National Archives
Updated: August 2026
Cross-referenced: Small Wars Journal
// Rights & Declassification Notice The wartime records in this collection were produced by the Office of Strategic Services between 1942 and 1945, and each hosted file carries its own classification and declassification history, recorded on the relevant card. Originals are held by the National Archives and Records Administration (NARA) and in the CIA CREST collection. Rights are stated on each card as an observation about what that document itself prints, not as a determination of copyright status. Where an edition hosted here was found to carry a live commercial copyright, the file has been withdrawn and an off-site copy is cited in its place. Material is presented for historical research and educational purposes. Nothing contained in these documents should be interpreted as instruction or advocacy for unlawful activity.
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Collected Edition Available on Amazon

Office of Strategic Services: Combined & Remastered Manuals

Unites all eight original Office of Strategic Services manuals, faithfully reproduced and newly formatted for clarity and continuity. Each manual has been meticulously typeset and standardized to preserve historical integrity while enhancing usability for research, study, and instruction. Available in hardcover and paperback.

Declassified OSS Field Manuals

8 Documents
Field Manual 1944

Simple Sabotage Field Manual (1944)

Simple Sabotage Field Manual, Strategic Services (Provisional), Strategic Services Field Manual No. 3
Office of Strategic Services, Washington D.C., 17 January 1944, over the signature of William J. Donovan, Director of Strategic Services · OSS Reproduction Branch · PDF, 2.2 MB
Prints controlled handling under AR 380-5 and carries DECLASSIFIED stamps.

Outlines practical methods for ordinary citizens to disrupt enemy operations using simple, low-risk acts, wasting time, spreading confusion, and minor physical sabotage that could cumulatively degrade enemy efficiency. Written for distribution in occupied territories as a primer on low-end disruptive tactics.

Field Manual 1943

Morale Operations Field Manual

Morale Operations Field Manual, Strategic Services (Provisional), Strategic Services Field Manual No. 2
Office of Strategic Services, Washington D.C., 26 January 1943 · declassified under authority NND 843099, 3 December 2013 · PDF, 3.0 MB
Copies are also held by the Internet Archive and in the CIA Reading Room as CIA-RDP89-01258R000100010002-4.

Guided OSS officers in psychological and propaganda campaigns designed to weaken enemy confidence. Provides detailed techniques for rumor-spreading, black propaganda, and other covert methods of undermining morale behind enemy lines. A foundational reference in the study of psychological operations and information warfare.

Field Manual 1944

Special Operations Field Manual

Special Operations Field Manual, Strategic Services (Provisional)
Office of Strategic Services, Washington D.C., 23 February 1944, over the signature of William J. Donovan · PDF, 1.3 MB
Printed secret, with the instruction that “the contents of this Manual should be carefully controlled and should not be allowed to come into unauthorized hands,” handled under AR 380-5. A copy is also held by the Internet Archive.

A comprehensive guide for training and conducting irregular warfare operations during World War II. Covers planning, organization, guerrilla tactics, demolitions, and coordination with resistance movements. Reflects the OSS’s role as the forerunner of modern U.S. special operations forces, blending doctrine with practical fieldcraft.

Organizational Manual

OSS Organization and Functions

Office of Strategic Services (OSS) Organization and Functions
Office of Strategic Services, a school and training publication · no date printed on the document · PDF, 5.1 MB · DECLASSIFIED stamps throughout
Prints its original handling restriction: “The student may retain his numbered copy of the book for reference during the course, but it must be returned to the Chief Instructor on demand.”

Provides an overview of the OSS’s internal structure, outlining the roles, responsibilities, and coordination of its various branches during World War II. Captures the OSS’s evolution into a unified wartime intelligence organization and remains a key reference for understanding the origins of U.S. covert and special operations.

Field Manual Maritime

Maritime Unit Field Manual

Maritime Unit Field Manual, Strategic Services (Provisional)
Office of Strategic Services, Washington D.C., 18 July 1944 · OSS Reproduction Branch 47189 · PDF, 0.9 MB
Printed Secret. No declassification stamp appears in the front matter.

Documents the doctrine and methods of the OSS Maritime Unit, the forerunner of today’s naval special operations. Covers coastal infiltration, swimmer delivery systems, demolition techniques, and specialized maritime sabotage operations. Reflects the OSS’s pioneering role in combining irregular warfare with naval tactics.

Field Manual Operational

Operational Groups Field Manual

Operational Groups Field Manual, Strategic Services (Provisional), Strategic Services Field Manual No. 6
Office of Strategic Services, over the signature of the Director of Strategic Services, 25 April 1944 · PDF, 1.8 MB
Printed Secret under AR 380-5 of 15 March 1944, with a DECLAS notation at the end of the document.

Outlines the organization, training, and mission of the OSS Operational Groups, elite, uniformed units conducting guerrilla warfare in occupied Europe. Covers small-unit tactics, coordination with resistance forces, demolitions, and intelligence integration. Precursor to modern U.S. Army Special Forces.

Field Manual Intelligence

OSS Secret Intelligence Manual

Secret Intelligence Field Manual, Strategic Services (Provisional), Strategic Services Field Manual No. 5
Office of Strategic Services, over the signature of the Director of Strategic Services, 22 March 1944 · OSS Reproduction Branch 39526 · PDF, 7.9 MB
Printed TOP SECRET. Declassified under authority NND 974345, by TKN, 12 March 2013.

A procedural handbook for clandestine intelligence work during World War II. Lays out organizational principles, tradecraft, and security practices for gathering, evaluating, and transmitting critical information. Emphasizes cover work, compartmentation, secure communications, and rigorous source evaluation.

Field Manual Provisional

OSS Provisional Basic Field Manual

Office of Strategic Services
PDF, 1.7 MB

A field primer for OSS personnel preparing for overseas operations. Describes essential duties, reporting standards, and practical preparations, including training scopes, arrival and departure procedures, and handling of agents and records under high risk. Stresses clarity, speed of reporting, and minimal paperwork.

War Reports, Assessments & Specialist Documents

4 Documents
Technical Document External Archive

OSS Special Weapons and Devices

OSS Research and Development Branch
Not hosted by The Resistance Hub · held as a private record by the National Archives of Singapore, 54 pages
Presented by the holding archive in a page-turning viewer rather than as a downloadable PDF.

An illustrated manual produced by the OSS Research and Development Branch cataloguing specialized weapons and devices developed for sabotage, covert action, and unconventional warfare. Details the design, construction, and employment of clandestine tools, including explosives, incendiaries, disguised firearms, and mechanical sabotage equipment, for field agents and resistance networks.

Assessment Study 1948

Assessment of Men: Selection of Personnel for the Office of Strategic Services

Prepared by the OSS Assessment Staff
Rinehart and Company, New York, 1948 · PDF, 50.2 MB
A commercial imprint of a study written inside a U.S. Government body. No renewal of the 1948 registration appears in the U.S. copyright renewal record indexed by Stanford Libraries, and the HathiTrust copyright review records all three digitised copies as full view.

A landmark study detailing the OSS’s groundbreaking WWII psychological program for selecting spies and agents. The OSS developed innovative, multi-day, scenario-based assessments to evaluate candidates’ adaptability, resilience, and problem-solving skills, methods that still influence modern intelligence and corporate talent selection.

War Report Vol. I Off-Site Copy

War Report of the Office of Strategic Services, Volume I

Compiled by the History Project, Strategic Services Unit, Office of the Assistant Secretary of War, 1947
U.S. Government Printing Office, Department of State Service Office, July 1949 · originally Top Secret · declassified under authority NND 974345 and released under the Nazi War Crimes Disclosure Act, PL 105-246

Documents the creation and wartime operations of the Office of Strategic Services, the United States’ first coordinated intelligence organization. It traces the origins, missions and structure of the OSS, and its lasting influence on modern American espionage, covert action and psychological-warfare doctrine. Kermit Roosevelt, chief of the History Project, signed the preface to the 1947 report and later supplied the introduction to the 1976 commercial edition.

// Rights Position
The edition previously hosted on this page was Walker and Company, New York, 1976, ISBN 0-8027-0529-4, LCCN 75-40760, published with a new introduction by Kermit Roosevelt. That edition prints “Introduction copyright © 1976 by the Walker Publishing Company, Inc. All rights reserved,” followed by a clause barring reproduction of the new introduction in any form without written permission from the publisher. The Resistance Hub is not currently redistributing that file. The 1947 report is linked below in the U.S. Government Printing Office text.
War Report Vol. II Off-Site Copy

War Report of the Office of Strategic Services, Volume II: The Overseas Targets

Compiled by the History Project, Strategic Services Unit, Office of the Assistant Secretary of War, 1947
U.S. Government Printing Office, Department of State Service Office, July 1949 · originally Top Secret · declassified under authority NND 974345 and released under the Nazi War Crimes Disclosure Act, PL 105-246

Chronicles the overseas operations of the OSS across Europe, North Africa, and Asia. Details field missions, intelligence networks, sabotage, and guerrilla coordination from London to Burma, illustrating how OSS shaped Allied strategy, global resistance movements, and the enduring institutional foundations of postwar intelligence.

// Rights Position
The edition previously hosted on this page has been withdrawn pending a rights review, as the companion volume of the Walker and Company, New York, 1976 two-volume set published with a new introduction by Kermit Roosevelt. That set prints “Introduction copyright © 1976 by the Walker Publishing Company, Inc. All rights reserved,” followed by a clause barring reproduction of the new introduction in any form without written permission from the publisher. The Resistance Hub is not currently redistributing that file. The 1947 report is linked below in the U.S. Government Printing Office text, catalogued by the Internet Archive under the volume heading Operations in the Field.

Additional Historical Accounts of the OSS

6 Books
Recommended Book Available on Amazon

Wild Bill Donovan: The Spymaster Who Created the OSS and Modern American Espionage

The definitive biography of William J. “Wild Bill” Donovan, the lawyer, war hero, and visionary who built the OSS from scratch and shaped U.S. intelligence for generations. Essential reading for understanding the institutional origins of modern American covert action.

Recommended Book Available on Amazon

OSS: The Secret History of America’s First Central Intelligence Agency

A detailed institutional history of the OSS, tracing how America’s first centralized intelligence apparatus was assembled, deployed, and eventually disbanded, laying the groundwork for the CIA and the modern U.S. intelligence community.

Recommended Book Available on Amazon

Operatives, Spies, and Saboteurs: The Unknown Story of the Men and Women of WWII’s OSS

Chronicles the largely untold stories of the men and women who served as OSS agents in the field, their recruitment, training, missions, and the personal cost of covert operations behind enemy lines across multiple theaters of the war.

Recommended Book Available on Amazon

The OSS: A Captivating Guide to America’s First Spy Agency and Its Secret Operations in WWII

An accessible overview of the OSS, its formation, key operations, major figures, and lasting influence on U.S. military and intelligence strategy. A solid entry point for readers new to the history of American covert action.

Recommended Book Available on Amazon

The Dirty Tricks Department: Stanley Lovell, the OSS, and the Masterminds of WWII Secret Warfare

The story of the OSS’s Research and Development Branch under Stanley Lovell, the scientists, engineers, and inventors who created the gadgets, poisons, and devices used by Allied agents. A fascinating look at the intersection of science and clandestine warfare.

Recommended Book Available on Amazon

OSS in China: Prelude to Cold War

Examines OSS operations in wartime China, navigating the complex rivalry between Nationalist and Communist forces while building intelligence networks that would shape the early Cold War. A critical study of how WWII covert operations set the stage for decades of conflict in Asia.

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