Doggett served in the
United States Marine Corps in the
24th Marine Amphibious Unit from 1977 to 1983. His final rank was
Sergeant (E-5). While serving in the military, he became good friends with fellow Marine
Knowle Rohrer. From 1982 to 1983, Doggett played a role in the
Multi-National Peacekeeping Force in Lebanon. Doggett retired from the U.S. Marine Corps with commendations after being wounded in the line of duty. After gaining a
Juris Doctor and a
Master's degree in Public Administration from
Syracuse University, Doggett went on to work for the
New York Police Department from 1987 to 1995, eventually becoming a detective in the Fugitive Division's Warrant section. While he was working for the NYPD, his son, Luke Doggett (played in flashbacks by
Jake Fritz), was abducted and murdered. Doggett teamed up with Special Agent
Monica Reyes, who was working out of the
New York FBI field office at the time, to search for his son's killer. After his son's death, Doggett's marriage to Barbara Doggett (played by Patrick's real-life wife
Barbara) ended in divorce. In 1995, Doggett graduated from the
FBI Academy and assumed the position of FBI
Special Agent in the Criminal Investigations Division. In 2000, Agent Doggett was assigned by Deputy Director
Alvin Kersh to head up the
manhunt to find Special Agent
Fox Mulder. Initially, Scully and Doggett were not very trusting of each other. After years of investigating several X-Files cases with Mulder, Scully had slowly grown to believe in the existence of the
paranormal. Doggett and his new partner, Reyes, took charge of the X-Files after Mulder was fired from the FBI and Scully left active duty to teach at the FBI Academy and to care for her son,
Baby William. In the series finale, Doggett testified on Mulder's behalf when Mulder was charged with murder. Later, he and Reyes narrowly escaped from
Knowle Rohrer, who Doggett had discovered about a year prior was working for the conspiracy. At the end of the series, Doggett is likely a regular agent, as it appears that Kersh was forced to close down the X-Files division. Doggett does not appear, nor is he mentioned, in the
2008 X-Files feature film. He similarly does not appear or is mentioned in
the 2016 television revival of The X-Files. == Conceptual history ==