Donald Barry, not yet Donald "Red" Barry, heads the cast of the Republic western Ghost Valley Raiders. A federal marshal, Barry is assigned to put an end to the activities of a stagecoach-robbery gang. That's why he spends most of the film pretending to be an outlaw himself. Stunt specialist Yakima Canutt plays a secondary villain, and also doubles for Barry in the dicier action scenes.

The story revolves around a valuable silver deposit, located between two ranches. Villain Lash Bender cooks up a scheme to gain control of both ranches so that he may have a clear field to the silver lode.

Two jobless Americans convince a prospector to travel to the mountains of Mexico with them in search of gold. But the hostile wilderness, local bandits, and greed all get in the way of their journey.

Stan and Ollie try to deliver the deed to a valuable gold mine to the daughter of a dead prospector. Unfortunately, the daughter's evil guardian is determined to have the gold mine for himself and his saloon-singer wife.

A Michigan farmer and a prospector form a partnership in the California gold country. Their adventures include buying and sharing a wife, hijacking a stage, kidnapping six prostitutes, and turning their mining camp into a boom town. Along the way there is plenty of drinking, gambling, and singing. They even find time to do some creative gold mining.

Ann and Tom Howard arrive from the east to take up ranching. But Tom wants to return and forges his sister's name to the deed and sells it to Larson. Eddie knows there is silver ore in the area and that Lawson, who killed the Sheriff, is out to get all the ranches. When Lawson appoints himself the new Sheriff, Eddie organizes the ranchers to fight Lawson and his men.

Double-crossed and left without water in the desert, Cable Hogue is saved when he finds a spring. It is in just the right spot for a much needed rest stop on the local stagecoach line, and Hogue uses this to his advantage. He builds a house and makes money off the stagecoach passengers. Hildy, a prostitute from the nearest town, moves in with him. Hogue has everything going his way until the advent of the automobile ends the era of the stagecoach.

A prospector discovers natural cement and suggests it should be used for a new dam. But this is the last thing the badmen of Trail End want, as they have a monopoly of the wagons needed to haul rocks to the site. A pretty sheriff notwithstanding, it's a job for a singing marshal.

A grizzled adventurer seeks a balanced life in the Alaskan wilderness.

Sintown is just a deserted ghost town until Vanerpool starts looking for silver. Cookie and Roy's partners put $20,000 into the business only to find that the mine is worthless and Vanerpool is bankrupt. Carol comes out to look for silver to save the company, but does not know that their engineer, named Regan, is crooked and wants all the silver for himself. But only Old Ed knows where the mother lode is located.

Unjustly booted out of the cavalry, Mike McComb strikes out for Nevada, and deciding never to be used again, ruthlessly works his way up to becoming one of the most powerful silver magnates in the west. His empire begins to fall apart as the other mining combines rise against him and his stubbornness loses him the support of his wife and old friends.

Having masterminded the hold up of his company office, a mining engineer is barred from the industry. He then sets up shop as an assayer, scheming to acquire a rich silver mine lease from its operators.

Adam Larey becomes a fugitive from justice when he escapes after being blamed for a crime he did not commit. He wanders into the desert wastelands and joins an outlaw gang who prey on gold prospectors. Years later, he meets his wife and her gold-prospecting father as they have come there seeking their fortune, and not knowing the danger of the treacherous desert wastes, the poisoned-water holes and the outlaw bands of marauders who roam the desert in search of the gold found by others. He comes to their aid and, eventually, manges to clear his name of the false charge against him.

Jack Thornton has trouble winning enough at cards for the stake he needs to get to the Alaska gold fields. His luck changes when he pays $250 for Buck, a sled dog that is part wolf to keep him from being shot by an arrogant Englishman also headed for the Yukon. En route to the Yukon with Shorty Houlihan -- who spent time in jail for opening someone else's letter with a map of where gold is to be found -- Jack rescues a woman whose husband was the addressee of that letter. Buck helps Jack win a $1,000 bet to get the supplies he needs. And when Jack and Claire Blake pet Buck one night, fingers touch.

It is 1892 in Death Valley and the yields from the Borax ore are getting so small that refining it is a losing proposition. The only thing that will save the company is a new deposit of high grade Borax, and Skinner Bill Bragg has a pouch of it that he got from a dead prospector he buried on the road. Stag Roper knows the value of the strike could be worth millions, but he needs Bragg to find the prospector's claim so they can record it and become rich partners. While Roper has no intention of cutting Bragg in on the millions, he also has his eye on young Jean Johnson. Josie Johnson, Jean's mother, sees Roper as the scalawag he is, and that means trouble in Furnace Flat.

When Decker's gang holds up a stage, henchman Lefty takes a lady's rings. Later lefty accidentally exposes the rings buying ammunition and Cheyenne sees them. When Lefty tries to shoot Cheyenne he is captured. Now Cheyenne wants the rest of the gang and their leader.

A man wrongly accused of murder tracks the true culprit across the desert.

Blind Pete Horne knows the location of the Lost Spanish Silver Lode, but is knifed before he can tell anyone. His seeing eye dog, Duke, brings Rex Allen and Gabriel Horne to Pete's lifeless body. They set out to find the killer and run into trouble near Silver City, Arizona, when they rescue Katie McIntosh from a gang that is chasing her buckboard.

A lawman goes undercover in order to capture the outlaws who murdered his wife.

Not quite a western, not quite a historical drama, Under Strange Flags is a little bit of both, and a lot of former RKO Radio cowboy hero Tom Keene. The star is cast as Tom Kenyon, a roving adventurer in Mexico during the Revolution. Hoping to protect the silver mine owned by heroine Dolores De Vargas (Luana Walters), Tom receives unexpected assistance from none other than rebel leader Pancho Villa (Maurice Black).