Trouble in Colorado is tying up Union troops needed back east during the Civil War and Lieut. Burke is sent to investigate. Macklin and his gang are causing the problems and Capt. Mason joins them. When Burke catches up with them he also finds Mason, his brother.
Acting
Roy Rogers' effortless charm plus Gabby Hayes' comic relief gold.
Practical Effects
Genuine 1940s horse stunts and stagecoach chases, zero CGI nonsense.

Director
Joseph Kane
Trivia, insights & behind the scenes
This was one of nine films Roy Rogers made in 1940 alone—Republic Pictures was absolutely milking the 'King of the Cowboys' phenomenon.
The 'singing cowboy' subgenre peaked right here—Rogers' musical numbers were deliberately inserted to distinguish him from grittier Western stars like John Wayne.