Two old friends find themselves on opposite sides during the Civil War in a desperate battle atop an impregnable mountain.
| Actor | Role |
|---|---|
 James CraigMaj. Clay Clayburn | Maj. Clay Clayburn |
 Barbara PaytonKathy Summers | Kathy Summers |
 Guy MadisonMaj. Will Denning | Maj. Will Denning |
 Barton MacLaneSgt. Mac McCardle | Sgt. Mac McCardle |
 Robert OsterlohSgt. Harper | Sgt. Harper |
 Tom FaddenPurdy | Purdy |
 Robert EastonJerry | Jerry |
 Louis Jean HeydtCol. House | Col. House |
 Craig StevensCol. Braxton Summers | Col. Braxton Summers |
 Taylor HolmesAlbert Monroe | Albert Monroe |
 Peter BroccoUnion Corporal | Union Corporal |
 Norman LeavittConfederate Soldier (uncredited) | Confederate Soldier (uncredited) |
| BBilly NelsonUnion Sergeant (uncredited) | Union Sergeant (uncredited) |
 Denver PyleUnion Soldier Breaking Window (uncredited) | Union Soldier Breaking Window (uncredited) |