| BBothwell BrowneCaptain Bob White | Captain Bob White |
 Ford SterlingKaiser Bill | Kaiser Bill |
 Malcolm St. ClairThe Crown Prince Freddy | The Crown Prince Freddy |
 Bert RoachVon Hindenburg | Von Hindenburg |
 Eva ThatcherThe Kaiserin | The Kaiserin |
 Marie PrevostA Daughter of Belgium | A Daughter of Belgium |
 Ben TurpinA Prussian Guardsman | A Prussian Guardsman |
 Charles MurrayAn Irish-American Soldier | An Irish-American Soldier |
 Chester ConklinOfficer of Death's Head Hussars | Officer of Death's Head Hussars |
 Heinie ConklinPrussian Guard Drill Leader | Prussian Guard Drill Leader |
 Joseph BelmontVon Tirpitz | Von Tirpitz |
 James FinlaysonCommander's Officer (uncredited) | Commander's Officer (uncredited) |
 Phyllis HaverMinor Role (uncredited) | Minor Role (uncredited) |
 Edgar KennedyGerman Prison Guard (uncredited) | German Prison Guard (uncredited) |
 Tom KennedyAmerican General (uncredited) | American General (uncredited) |
 Billy ArmstrongLudwig - Asylum Keeper | Ludwig - Asylum Keeper |
 Bobby DunnMinor Role | Minor Role |
| GGeorge GrayWaiter | Waiter |
 Harry GribbonGerman Guard | German Guard |
| LLaurel Lee HamiltonMinor Role | Minor Role |
 Harriet HammondMinor Role | Minor Role |
 Frank HayesUgly Woman | Ugly Woman |
 Fanny KellyThe Kaiserin's Lady-in-Waiting | The Kaiserin's Lady-in-Waiting |
| PPatrick KellyMinor Role | Minor Role |
 Myrtle LindMinor Role | Minor Role |
 Roxana McGowanMinor Role | Minor Role |
| AAl McKinnonWaiter Pouring Beer | Waiter Pouring Beer |
 Kalla PashaGerman Guard | German Guard |
 Marvel ReaMinor Role | Minor Role |
| WWayland TraskLarge German Officer / Large American Soldier | Large German Officer / Large American Soldier |
