[4] Montgomery was in a cadet in the Naval Reserve Officers Training Corps while at the University of Southern California.

When he was 18 and still in college, Montgomery played Noel Chandler in the soap opera Dear John.

[3] Montgomery had the role of Professor Howard Ogden in the syndicated children's adventure series Ramar of the Jungle in 1952–1953.

[7] He starred in the pilot of The West Point Story, a syndicated program about cadets at the United States Military Academy,[8] and appeared in the premiere episode of Alfred Hitchcock Presents, October 2, 1955.

[9] In 1955 Montgomery appeared as Morton Scott in the TV western Cheyenne in the episode titled "Julesburg."