Brothers Beau, John and Digby Geste join the Foreign Legion, where they fall under the rule of tyrannical Sergeant Markoff. Beau and John are assigned to Fort Zinderneuf, where Markoff tries to break their spirit, aware of a dark family secret concerning a fabulous jewel one of them carries. As tensions rise, Arabs attack the fort and rivalries must be thrown aside in a desperate battle for life.
Ronald Colman
Neil Hamilton
Ralph Forbes
Alice Joyce
Mary Brian
Noah Beery
Norman Trevor
William Powell
George Regas
Bernard Siegel
Victor McLaglen
Donald Stuart
Paul McAllister
Redmond Finlay
Bhogwan Singh
Mickey McBan
Maurice Murphy
Philippe De Lacy