J. Edgar Hoover on War Preparedness - HISTORY

In a September 1940 address to the American Legion, J. Edgar Hoover, the director of the FBI, warns of the growing threat of subversive forces in the United States.

FACT CHECK: We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us! HISTORY reviews and updates its content regularly to ensure it is complete and accurate.

RELATED CONTENT

Live coverage of the V-J Day celebration from Des Moines' WHO radio captures the excitement of revelers in the streets at the end of World War II.

J. Robert Oppenheimer, the father of the atomic bomb, appeared on Edward R. Murrow's TV show "See It Now" in 1955. In a recording of his interview, Oppenheimer expresses his views on government transparency.

See how Henry Kaiser's love for a young lady spurred him to build the Hoover Dam and the great military war ships.

Herbert Hoover, America’s 31st president, took office in 1929, the same year the U.S. economy plummeted into the Great Depression.

Did you know that the Hoover Dam supplies electricity to more than 20 million people? Get all the facts on this marvel of engineering.