OG Overview
Operational Groups:
Sources & Links
The Office of Strategic Services was initiated during World War II by General William J. Donovan with the approval and support of President Franklin D. Roosevelt to improve, coordinate and provide intelligence needed for wartime activities, and was placed under the direct control of the Joint Chiefs of staff. Branches of the OSS included SI (Secret Intelligence), SO (Special Operations), OG (Operational Groups), MO (Morale Operations), and others.

While the O.S.S. in general is considered to have been the forerunner of the C.I.A. and its history has been much written about, the Operational Groups in particular have remained largely undocumented, even though they are recognized as the forerunner of the U.S. Special Forces.

It is the intent of this site is to compile information about the O.S.S. Operational Groups and their activities during World War II, and to make that information available to the public.

Any information or feedback is welcome and encouraged.

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New items:
Italian Mission Cayuga

Gen. Donovan reviews the OGs
at Area F prior
to their departure
for China in 1945.
(click to enlarge)

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