- Wallace Beery
- 'Hap' Doan
- Marjorie Main
- Susie
- Lewis Stone
- Colonel Lawton
- George Bancroft
- Russell
- Henry O'Neill
- Lieutenant Colonel Seton
- Donna Reed
- Sally Hanson
- Chill Wills
- Dillon
- William Lundigan
- Joe Hanson
- Tom Dugan
- Sergeant Strong
- Guinn 'Big Boy' Williams
- Krims
- Ernest Whitman
- Cartaret
- Roman Bohnen
- Leech
- Jerome Cowan
- Nichols
- Arthur Space
- Hank
- Jonathan Hale
- Brigadier-General
- Stanley Andrews
- Veterinarian
- Stephen Bennett
- Recruit
- Lane Chandler
- Cavalry Trooper
- Cliff Danielson
- Recruit
- John Dawson
- Recruit
- Donald Douglas
- Mr. Clyde - FBI Agent
- Bill Edwards
- Recruit
- Dorothy Granger
- Woman with Cake
- John Gubbins
- Recruit
- Reed Hadley
- Court-Martial Judge
- Mahlon Hamilton
- Train Engineer
- Hal Le Sueur
- Recruit
- Alexander Lockwood
- Sergeant
- Jack Luden
- Lawton's First Adjutant
- Frank Melton
- Trooper
- James Millican
- Recruit Tank Driver
- Allan Nixon
- Recruit
- Bradley Page
- Second Adjutant
- Eddie Parker
- Sergeant
- Lee Phelps
- Sergeant at Guard House
- Kane Richmond
- Captain
- Walter Sande
- Headquarters Sergeant
- Jimmy Spencer
- Recruit
- Harry Strang
- Sergeant
- Ray Teal
- Sergeant
- Ralph Urmy
- Captain
- Max Wagner
- Cavalry Trooper
- Dick Wessel
- Jerry - Saboteur
- Frank Whitbeck
- Prologue Narrator
- Dick Winslow
- Recruit
