In 1942, the FBI dismantled a massive German spy ring using a double agent
In the largest espionage case in American history, the FBI utilized a daring double agent to dismantle the Duquesne Spy Ring just months before the United States entered World War II.
On January 2, 1942, 33 members of a massive German spy network were sentenced to a total of over 300 years in prison. Led by Fritz Joubert Duquesne, the ring had spent years gathering American military secrets and shipping schedules for the Nazi regime.
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