Ranger Courage (1937)
The Harper wagon train is carrying money and Bull and his gang are after it. When their first attack is foiled by the rangers, Allen trails them. But he is captured and his ranger badge used to divert the rangers away leaving the wagon train unprotected.
Directed by: Spencer Gordon Bennet
Starring: Robert Allen, Martha Tibbetts, Walter Miller, Robert "Buzz" Henry, Bud Osborne, Bob Kortman
Links: IMDb, Movie posters, Movie stills