Spahi Captain Paul Gerard (George Raft) is assigned to lead a patrol to the city of Bel-Rashad en route to a French Foreign Legion fort. Gerard is to escort the Emir's daughter, Cara, who has been studying in France, to Bel-Rashad that is off limits to Frenchmen and investigate whether there may be anti-French activity in the city. On their ten-day journey Gerard and Cara fall in love. Leaving Cara at Bel-Rashad, Gerard reports to the Legion fort commanded by Commandant Fronval and his executive officer Lieutenant Glysko, a former Cossack.
One night at the Legion outpost, a sentry is shot by a sniper with all agreeing the bullet did not come from a usual musket. Gerard infiltrates Bel-Rashad discovering the locals are being armed with modern Mauser rifles. Detected, Gerard grabs a rifle and fights his way out being hidden by Cara in her room until he makes his escape.
At the Legion fort it is agreed that Gerard must personally inform headquarters of these new developments. Leading a strong patrol back to the fort they discover that the fort has been destroyed with one wall being obliterated and all the Legionnaires are dead. Some of the Legionnaires, including Commandant Fronval, are found bound and executed. Gerard orders a raid of Bel-Rashad in retaliation led by Lt. Glysko to capture the Emir. The Emir is out rallying the tribes but Lt. Glysko brings back Cara as a hostage.
As the Legion has no cement, the wall is repaired with mud. The Emir lays siege to the fort, and diverts the river that leads to the fort's water supply with dynamite. Encouraged by his initial victory, the Emir hopes to unite the all the tribes against the French. However due to feelings of loyalty, gratitude or fear, none of the other tribes wish to attack the French. Faced with no water, Gerard plans a breakout and releases Cara. After Glysko prays to God. a rainstorm comes encouraging the garrison but destroying the mud built wall.
After the rain Gerard orders the approach route to the destroyed wall planted with landmines and covered by machine guns that he figures the Emir will use as his route of attack. At dawn the Emir leads his tribe to overrun the fort through the open wall. Cara tries to stop his attack. As Gerard sees her riding into the minefield to see her father, Gerard sadly orders the detonation of the mines and the crossfire to begin that wipes out the Emir, Cara and their tribe.
The film ends with tribal leaders ordering their warriors to lay down their rifles in front of Gerard and his officers, in acknowledgement that order has been restored in Bel-Rashad.George Raft as Capt. Paul Gerard
Marie Windsor as Cara
Akim Tamiroff as Lt. Glysko
John Litel as Col. Pascal
Ernő Verebes as Bamboule - Gerard's spahi orderly
Eduard Franz as Emir of Bel-Rashad
Crane Whitley as Caid Osman
Damian O'Flynn as Commandant Louis Fronval
Michael Ansara as Rifle Dispenser (uncredited)
Ralph Brooks as Nightclub Patron (uncredited)
John Doucette as Card-playing soldier (uncredited)
James Nolan as Legionnaire Colonel Pascal's aide (uncredited)
Suzanne Ridgeway as Nightclub Patron (uncredited)
Ivan Triesault as Tribal Leader (uncredited)
Outpost in Morocco was originally meant to be made by RKO in 1939, based on a story by producer Joseph Ermolieff. It was cancelled following the declaration of World War Two, leading to Ermolieff suing RKO.
Ermolieff later succeeded in setting up the film with actor George Raft and producer Sam Bischoff, who had just created a company, Star Films, who had produced the film Intrigue. Outpost in Morroco would be their second film. (The company intended to make Mississippi Gambler and a fourth film set in Panama.)
Ermolieff and Star films created the company, Moroccan Films, and obtained finance from Pathe Cinemas of France.
The company got permission to actually film in Morocco using the real Foreign Legion. Raft travelled to Morocco in December 1947 with second unit director Richard Rosson, French-speaking cinematographer Lucien Androit, and French technicians. They spent nearly five months filming battle scenes and chases in Morocco, chiefly around the base at Bal Achard. Raft returned from Morroco in March 1948 with 85,000 feet of film.
The filmmakers spent the next few months sifting through the footage, actually completing the shooting script (the Moroccan footage was filmed on the basis of a long treatment), and finding local locations that matched the Moroccan footage. Interiors were shot later in the year at the Goldwyn Studios in Los Angeles. Marie Windsor was borrowed from Enterprise Films to play the female lead.
The film made a reasonable profit.