- Jack Mulhall
- Clancy
- Raymond Hatton
- Renard
- Francis X. Bushman Jr.
- Dutch Schmidt
- John Wayne
- Tom Wayne
- Ruth Hall
- Elaine Corday
- Lon Chaney Jr.
- Armand Corday
- Hooper Atchley
- El Kadur
- Gordon De Main
- Col. Duval
- Robert Frazer
- Maj. Booth
- Noah Beery Jr.
- Stubbs
- Al Ferguson
- Ali
- Edward Peil Sr.
- Ratkin
- William Desmond
- Capt. Boncour
- George Magrill
- El Maghreb
- Robert Warwick
- Col. Brent [Ch. 1]
- Emile Chautard
- Gen. Pelletier [Ch. 1]
- Bob Burns
- Arab
- Yakima Canutt
- Legion Officer
- Steve Clemente
- Arab
- Ken Cooper
- Arab
- Frank Ellis
- Legionnaire
- Chick Hannan
- Firing Squad Member
- Rodney Hildebrand
- Col Demoyne [Chs. 11-12]
- Tracy Layne
- Legionnaire [Chs. 2, 4, 6-10, 12]
- Wilfred Lucas
- El Shaitan
- Kermit Maynard
- Legionnaire
- Merrill McCormick
- Ben Yosif
- Charles Middleton
- El Shaitan
- Artie Ortego
- Arab
- Tex Phelps
- Arab
- Tom Smith
- Arab
