The Long Gray Line is a 1955 American Cinemascope Technicolor biographical comedy-drama film in CinemaScope directed by John Ford based on the life of Marty Maher and his autobiography, Bringing Up the Brass, co-written with Nardi Reeder Campion. Tyrone Power stars as the scrappy Irish immigrant whose 50-year career at West Point took him from a dishwasher to a non-commissioned officer and athletic instructor.

Tyrone Edmund Power III was an American actor. From the 1930s to the 1950s, Power appeared in dozens of films, often in swashbuckler roles or romantic leads. His better-known films include Jesse James, The Mark of Zorro, Marie Antoinette, Blood and Sand, The Black Swan, Prince of Foxes, Witness for the Prosecution, The Black Rose, and Captain from Castile. Power's own favorite film among those in which he starred was Nightmare Alley.