"The Operations Groups Field Manual was a top secret document written in 1944 by the Office of Strategic Services (OSS), the precursor of the Central Intelligen

The Second World War era Office of Strategic Services (OSS) was the forerunner of today's CIA. During the war the organisation planned and executed thousands of

This Reprint of the OSS the Operational Groups Field Manual was printed and made available for the information and guidance of selected OSS personnel and was us

The Second World War era Office of Strategic Services (OSS) was the forerunner of today's CIA. During the war the organisation planned and executed thousands of