 Alan LaddCapt. Rockwell 'Rocky' Gilman | Capt. Rockwell 'Rocky' Gilman |
 Donna ReedAnn Daniels | Ann Daniels |
 George MacreadyMaj. Gen. Bond | Maj. Gen. Bond |
 George CoulourisLew Proctor | Lew Proctor |
 Harold VermilyeaRaymond Denmore, Sr. | Raymond Denmore, Sr. |
 Henry TraversPop Dewing | Pop Dewing |
 Tom NealCapt. Henry Jason Daniels | Capt. Henry Jason Daniels |
 Conrad JanisRaymond Denmore, Jr. | Raymond Denmore, Jr. |
 Dick HoganCadet Sgt. Eddie Loughlin | Cadet Sgt. Eddie Loughlin |
| PPaul LeesCadet Miller | Cadet Miller |
 Audie MurphyCadet Thomas | Cadet Thomas |
 Geraldine WallMrs. Daniels | Mrs. Daniels |
 Luis van RootenDr. Joseph White (as Louis Van Rooten) | Dr. Joseph White (as Louis Van Rooten) |
 Charles EvansMr. Julian | Mr. Julian |
 Margaret FieldCora | Cora |
 Sean McCloryBarney | Barney |
 Steve PendletonGen. Prescott | Gen. Prescott |
| VVincent DonahueJohn Craig | John Craig |
 Harland TuckerCol. Stoddard (as Harlan Tucker) | Col. Stoddard (as Harlan Tucker) |
 Russell WadeCadet Jensen | Cadet Jensen |
 Dorothy AbbottParty Girl (uncredited) | Party Girl (uncredited) |
 James BurkeJim, the Bartender (uncredited) | Jim, the Bartender (uncredited) |
 Dwight D. EisenhowerHimself (archive footage) (uncredited) | Himself (archive footage) (uncredited) |
 Julia FayeMotherly Churchgoer (uncredited) | Motherly Churchgoer (uncredited) |
 Noel NeillParty Girl (uncredited) | Party Girl (uncredited) |
 Paul PicerniSecond Detective (uncredited) | Second Detective (uncredited) |
 Kenneth TobeyBit Role (uncredited) | Bit Role (uncredited) |
| RRobert WinklerWest Point Candidate (uncredited) | West Point Candidate (uncredited) |
