Important Role of former Nazis in Eastern Germany." 

November 21, 1950
Central Files Decimal Number 762B.00

National Security and the FBI Surveillance of Enemy Aliens

A letter discussing and listing some of the German-Americans suspected and arrested during WWII.

A letter discussing and listing some of the German-Americans suspected and arrested during WWII.

Summary

This collection provides insight into the recent history of the surveillance of aliens and national security during World War II and the early postwar period. 

An intuitive platform makes it all cross-searchable by subject or collection.

Date Range: 1940-1978
Content: 29,061 pages
Source Library: FBI Headquarters Library

Description

The Custodial Detention Index (CDI), or Custodial Detention List was formed in 1939-1941, in the frame of a program called variously the “Custodial Detention Program” or “Alien Enemy Control.” J. Edgar Hoover described it as having come from his resurrected General Intelligence Division -- “This division has now compiled extensive indices of individuals, groups, and organizations engaged in subversive activities, in espionage activities, or any activities that are possibly detrimental to the internal security of the United States. The Indexes have been arranged not only alphabetically but also geographically, so that at any rate, should we enter into the conflict abroad, we would be able to go into any of these communities and identify individuals or groups who might be a source of grave danger to the security of this country. These indexes will be extremely important and valuable in a grave emergency.”

 

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