Although not terribly historically accurate Come On Rangers was a fast moving and entertaining early Roy Rogers film which casts Roy as a member of the Texas Rangers post Reconstruction.
But the Rangers are about to be disbanded and the Governor of Texas at the urging of a State Senator played by Purnell Pratt wants to establish a new Texas state police. In fact Pratt feels so strongly he's going to resign his legislative seat and the perks therein to head the state police.
Pratt's seeing some real lucrative opportunities here for a lovely protection racket where the dirty work is carried out by his henchman Harry Woods and the rest of a nicely organized outlaw band. As a politician, Pratt's a real bottom feeder.
The cavalry is also on the scene, but they're not terribly affective bound up in red tape as it were. But Colonel J. Farrell MacDonald has a lovely daughter in Lynne Roberts who's got both Roy and Lieutenant Bruce MacFarlane panting after her. Roy joins the cavalry, but finds the red tape cramps his style every which way.
Playing the sidekick role is movie veteran Raymond Hatton whose career dates all the way back to the early silent era as does J. Farrell MacDonald.
Come On Rangers is a nice action western with a few Roy Rogers type songs thrown in. A Saturday matinée dream.