The Horse Soldiers (1959)

Director: John Ford
Cast: Bing Russell, Constance Towers, Hoot Gibson, John Wayne, Judson Pratt, Ken Curtis, William Holden, Willis Bouchey

Synopsis:

A Union Cavalry outfit is sent behind confederate lines in strength to destroy a rail supply center. Along with them is sent a doctor who causes instant antipathy between him and the commander. The secret plan for the mission is overheard by a southern belle who must be taken along to assure her silence.