Dark Command

Dark Command is a 1940 American Western thriller film that stars Claire Trevor and John Wayne, with Walter Pidgeon, Roy Rogers and Marjorie Main, loosely based on Quantrill's Raiders during the American Civil War. Directed by Raoul Walsh from the novel by W. R. Burnett, Dark Command is the only film in which western icons John Wayne and Roy Rogers appear together, and was the only film Wayne and Raoul Walsh made together since Walsh discovered Wayne working as a prop mover, renamed him, and gave him his first leading role in the epic widescreen Western The Big Trail a decade before.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.