[2][3] A graduate of the United States Military Academy at West Point, he previously served as its 73rd Commandant of Cadets.

Born in Massachusetts but a native of Jacksonville Beach, Florida, Martin attended the United States Military Academy and commissioned into the Army as a Second Lieutenant in 1983.

Previously he served in a variety of staff and leadership assignments including duty in: Martin's successor as DCG of TRADOC was announced February 25, 2021, when Major General Maria Gervais was promoted to the rank of lieutenant general and confirmed by the Senate.

[11] [12] Martin is known for maintaining an active presence on the social media site Twitter, noted for his approachability despite his senior rank and the military's ingrained conservatism.

[13][14] He often solicits public input from his followers on issues pertaining to Army policy and concerns of servicemembers, and argued to Newsweek that his "risky" humor helps correct misperceptions and humanize the relationship and understanding between superiors and subordinate.