The Office of Strategic Services:
Secret Intelligence Branch
With the Pearl Harbor bombing on December 7, 1941, the United States entered World War II. In June 1942, President Roosevelt created the Office of Strategic Services (OSS) â the forerunner of CIA. For the first time in U.S. history, the nation had a single intelligence service engaged in basic secret activities: espionage, covert action, propaganda, and counterintelligence. This article focuses on the Secret Intelligence Branch of the OSS. more >