Only the Brave (1930)
Only the Brave is a 1930 American Civil War drama film directed by Frank Tuttle and starring Gary Cooper, Mary Brian, and Phillips Holmes. Written by Agnes Brand Leahy, Edward E. Paramore Jr., Keene Thompson, and Richard H. Digges Jr., the film is about a Union Army captain who travels into Confederate territory as a spy with false dispatches hoping to mislead the Confederate forces. His mission is complicated when he falls in love with a southern woman who comes to his aid. Produced by Hector Turnbull for Paramount Pictures, Only the Brave was released on March 8, 1930 in the United States.
More at Wikipedia.