William Mark Felt Sr. (August 17, 1913 - December 18, 2008) was a Federal Bureau of Investigation (FBI) special agent and the Bureau's Associate Director, the FBI's second-highest-ranking post, from May 1972 until his retirement from the FBI in June 1973. During his time as Associate Director, Felt served as an anonymous informant, nicknamed "Deep Throat," to reporters Bob Woodward and Carl Bernstein of The Washington Post. He provided them with critical information about the Watergate scandal, a scandal which ultimately led to the resignation of President Richard M. Nixon in 1974.
FBI Director J. Edgar Hoover often moved Bureau agents around so they would have wide experience in the field. This was typical of other agencies and corporations of the time. Felt observed that Hoover "wanted every agent to get into any field office at any time. Since he [Hoover] had never been transferred and did not have a family, he had no idea of the financial and personal hardship involved." After completing sixteen weeks of training at the FBI Academy at Quantico, Virginia, and FBI Headquarters in Washington, DC., Felt was assigned to Texas, working in the field offices in Houston and San Antonio, spending three months in each. He returned to FBI Headquarters, where he was assigned to the Espionage Section of the Domestic Intelligence Division, tracking down spies and saboteurs during World War II. He worked on the Major Case Desk. His most notable work was on the "Peasant" case. Helmut Goldschmidt, operating under the codename "Peasant", was a German agent in custody in England. Under Felt's direction, his German masters were informed "Peasant" had made his way to the United States, and thus were fed disinformation on Allied plans. The Espionage Section was abolished in May 1945 after V-E Day. After the war, Felt was assigned to field offices, first to Seattle, Washington. After two years of general work, he spent two years as a firearms instructor and was promoted from agent to supervisor. Upon passage of the Atomic Energy Act and the creation of the United States Atomic Energy Commission, the Seattle office became responsible for completing background checks of workers at the Hanford plutonium plant near Richland, Washington. Felt oversaw those investigations. In 1954, Felt returned briefly to Washington as an inspector's aide. Two months later, he was sent to New Orleans, Louisiana, as Assistant Special Agent-in-Charge (SAIC) of the field office. When he was transferred to Los Angeles, California, fifteen months later, he held the same rank there.

Q: When did Mark start at the FBI
A: May 1945

Q: What was his early career?
A: he was assigned to the Espionage Section of the Domestic Intelligence Division, tracking down spies and saboteurs during World War II.
when did felt end up with in washington
1954, The Espionage Section was abolished in May 1945 after V-E Day. After the war, Felt was assigned to field offices, first to Seattle, Washington. The Espionage Section was abolished in May 1945 after V-E Day. After the war, Felt was assigned to field offices, first to Seattle, Washington. After the war, Felt was assigned to field offices, first to Seattle, Washington. After the war, Felt was assigned to field offices, first to Seattle, Washington.
After the war, Felt was assigned to field offices, first to Seattle, Washington.