Early years

Thomas graduated from the University of Texas at Austin in 1984 with a bachelor's degree in computer science^[4] and was commissioned in the United States Marine Corps as a Second Lieutenant.^[5]

Military career

LtCol Thomas took command of VMFA-323 on October 27, 2001, at Marine Corps Air Station Miramar.^[6] The squadron deployed as the lone Marine fighter squadron onboard the USS Constellation (CV-64) in November 2002. During this deployment, the squadron supported combat operations during the 2003 invasion of Iraq.^[7] Thomas turned over command of the squadron on June 13, 2003.^[6] Following his command tour, he attended National Defense University and graduated with an M.S. in National Security Strategy in June 2004.^[3]

As a Colonel, he commanded Marine Aviation Weapons and Tactics Squadron One (MAWTS-1). As a Brigadier General, he served as the Assistant Deputy Commandant for Aviation, and later as the Assistant Wing Commander of the 2nd Marine Aircraft Wing He was the Commanding General of 2d Marine Aircraft Wing (Forward) in Afghanistan from February to December 2013.^[8] He later served as the Commanding General of 2d Marine Aircraft Wing at Marine Corps Air Station Cherry Point, North Carolina.^[3]

On June 21, 2018, LtGen Thomas was nominated for appointment to the rank of General and to serve as the Assistant Commandant of the Marine Corps.^[5] Thomas was the 35th Assistant Commandant of the Marine Corps.^[8]

He retired from active duty at the end of his term as assistant commandant, and his retirement ceremony was held on October 15, 2021.^[9]