Grant Withers
— Cpl. Larry Lawrernce
Adrian Morris
— Sgt. Mack McGowan
Ann Rutherford
— Frances Schiller
Robert Warwick
— Col. W. R. Bennett
George J. Lewis
— Sgt. William Schiller [Chs. 1-4]
Pat O'Malley
— Capt. Grayson [Ch. 1]
Victor Potel
— Fake Native Chief [Ch. 12]
Jason Robards Sr.
— Kota
Warner Richmond
— Metcalf
Robert Frazer
— H.R. Douglas
J. Frank Glendon
— M.J. Buchanan
Donald Reed
— Pedro
Max Wagner
— Gibson
Richard Alexander
— Ivan
Tom London
— Miller
Jim Corey
— Karlsson