Mark Felt
Early life and career
He applied for a job with the FBI in November 1941 and was accepted. His first day at the Bureau was January 26, 1942.
Middle career
Felt returned to Washington, D.C., in September 1962. As assistant to the bureau's assistant director in charge of the Training Division, Felt helped oversee the FBI Academy. In November 1964, he was promoted to an Assistant Director of the Bureau, as Chief Inspector of the Bureau and Head of the Inspection Division. This division oversaw compliance with Bureau regulations and conducted internal investigations.
After Hoover's death
The record amply demonstrates that President Nixon made Pat Gray the Acting Director of the FBI because he wanted a politician in J. Edgar Hoover's position who would convert the Bureau into an adjunct of the White House machine.