Following the Civil War, headstrong rancher Thomas Dunson decides to lead a perilous cattle drive from Texas to Missouri. During the exhausting journey, his persistence becomes tyrannical in the eyes of Matthew Garth, his adopted son and protégé.

An unemployed drifter, Eric Stanton wanders into a small California town and begins hanging around the local diner. While Eric falls for the lovely waitress Stella, he also begins romancing a quiet and well-to-do woman named June Mills. Since Stella isn't interested in Eric unless he has money, the lovelorn guy comes up with a scheme to win her over, and it involves June. Before long, murder works its way into this passionate love triangle.

When transplanted Texan Bob Seton arrives in Lawrence, Kansas he finds much to like about the place, especially Mary McCloud, daughter of the local banker. Politics is in the air however. It's just prior to the civil war and there is already a sharp division in the Territory as to whether it will remain slave-free. When he gets the opportunity to run for marshal, Seton finds himself running against the respected local schoolteacher, William Cantrell. Not is what it seems however. While acting as the upstanding citizen in public, Cantrell is dangerously ambitious and is prepared to do anything to make his mark, and his fortune, on the Territory. When he loses the race for marshal, he forms a group of raiders who run guns into the territory and rob and terrorize settlers throughout the territory. Eventually donning Confederate uniforms, it is left to Seton and the good citizens of Lawrence to face Cantrell and his raiders in one final clash.

Imprisoned for a murder he did not commit, John Brant escapes and ends up out west where, after giving the local lawmen the slip, he joins up with an outlaw gang. Brant finds out that 'Jones', one of the outlaws he has become friends with, committed the murder that Brant was sent up for, but has no knowledge that anyone was ever put in jail for his crime. Willing to forgive and forget, Brant doesn't realize that 'Jones' has not only fallen for the same pretty shopgirl Brant has, but begins to suspect that Brant is not truly an outlaw.

Construction workers in World War II in the Pacific are needed to build military sites, but the work is dangerous and they doubt the ability of the Navy to protect them. After a series of attacks by the Japanese, something new is tried, Construction Battalions (CBs=Seabees). The new CBs have to both build and be ready to fight.

In the 1840s, Ramsey MacKay, the driver for the struggling Wells Fargo mail and freight company, will secure an important contract if he delivers fresh oysters to Buffalo from New York City. When he rescues Justine Pryor and her mother, who are stranded in a broken wagon on his route, he doesn't let them slow him down and gives the ladies an exhilirating ride into Buffalo. He arrives in time to obtain the contract and is then sent by company president Henry Wells to St. Louis to establish a branch office.

Pioneers of the West is a 1940 American Western "Three Mesquiteers" B-movie[1] directed by Lester Orlebeck.

Prizefighter Bob Neal (Ray Walker) is in debt to gangster Vic Santell (Hooper Atchley) for training expenses. Santell orders Bob to take a dive in the fourth round so Santell can recoup prior gambling losses. Taunted by his ring opponent, Bob wins the fight. Realizing that his profession and underworld characters connected to it are causing him problems, Bob decides to join the police force. After taking nurse Mary Prentiss (Geneva Mitchell) to a drive-in restaurant where the total bill is a depression-era cheap eighty-two cents, Bob and his fellow officers round-up a gang of fur thieves in a warehouse shoot-out.

Jerry Johnson inherits a 50,000 acre ranch. Lucky Miller wants to take over the ranch. Roy is trying to get a railroad spur right of way. Lucky has a woman come west to marry Jerry to get control of the ranch. After the wedding, Lucky has the owner killed. Roy’s gun is substituted for the murder weapon, so Roy is put in jail.

A timid bank clerk has to toughen up during the search for a gang of bank robbers.

A Traveler's Aid worker who delights in solving people's problems gets mixed up with gangsters.

A cowboy comes to the aid of a banker and his daughter who are fighting outlaws.

A singing entomologist (Roy Rogers) acts meek to help a juggling sheriff (George "Gabby" Hayes) solve ranch raids.

Dr. Leon Kravaal develops a potential cure for cancer, which involves freezing the patient. But an experiment goes awry when authorities believe Kravaal has killed a patient. Kravaal freezes the officials, along with himself. Years later, they are discovered and revived in hopes that Kravaal can indeed complete his cure. But human greed and weakness compound to disrupt the project.

A charismatic gunfighter who is on the run takes refuge in a frontier cattle town and attempts to help a group of ranchers against a wealthy cattle baron.

Ted Hayden impersonates a wanted man and joins Gentry's gang only to learn later that Gentry was the one who killed his father.

Hoppy, California and Johnny partner up with brother and sister ranch owners, two of several who are having their access to water blocked by a dam owned by a greedy merchant in town, who is intent on driving them out and taking their land for himself.

The Carson City Kid and partner Laramie are outlaws. When his partner is caught the Kid, his identity being unknown, takes a job in Jessup's saloon. Here he see Jessup cheat Waren out of his money. Warren then robs Jessup posing as the Kid but gets caught. To gain his freedom, Laramie identifies Warren as the Kid. Realizing Jessup is the man that killed his brother, the Kid must find a way to clear Warren and get Jessup.

Edited down version of Sagebrush Trail. Imprisoned for a murder he did not commit, John Brant escapes and ends up out west where, after giving the local lawmen the slip, he joins up with an outlaw gang. Brant finds out that ‘Jones’, one of the outlaws he has become friends with, committed the murder that Brant was sent up for, but has no knowledge that anyone was ever put in jail for his crime. Willing to forgive and forget, Brant doesn’t realize that ‘Jones’ has not only fallen for the same pretty shopgirl Brant has, but begins to suspect that Brant is not truly an outlaw.

A series of reversals bring two desperate people together. When a saloon owner is framed by his partner for a stagecoach robbery, he fights to secure an acquittal.