A refugee crisis in Vietnam occurs which complicates an French army captain's primary mission of securing a fort.
| Actor | Role |
|---|---|
 Alain SauryLieutenant Veyrac | Lieutenant Veyrac |
 Jean RochefortSergeant Hérange | Sergeant Hérange |
 Jacques HardenCaptain Noyelles | Captain Noyelles |
| FFoun-SenXuan | Xuan |
| JJean-Loup ReynoldSoldier Bernard Jules | Soldier Bernard Jules |
 Mai Trung ThứPriest | Priest |
| VVan QuynhViet Minh leader | Viet Minh leader |
| SStan DylikChief warrant officer Prétot | Chief warrant officer Prétot |
 Laurent DummSergeant Durrieu | Sergeant Durrieu |
| LLe Bâ DatSergeant Minh | Sergeant Minh |
| PPaul Luu DinhLu Banh | Lu Banh |
| NNguyen Thi TuyetMarie Phuong | Marie Phuong |
 Michel CharrelSoldier Vincent | Soldier Vincent |
| RRobert MauriceSoldier Masson | Soldier Masson |
| FFrançois BrincourtSoldier Isnard | Soldier Isnard |
 Bernard HugSoldier Buffet | Soldier Buffet |
 Claude LaugierRadio operator | Radio operator |
| PPhan Thi HoanLittle Hoang | Little Hoang |