When a small outpost is ambushed, a US Army squad must take the battle below ground on a high-stakes mission in a new type of warfare the likes of which they have never seen.
Genres: Action , Thriller , War
Keywords: 1960s , booby-trap , close-quarters-combat , enemy-infiltration , enemy-tunnels , hostile-territory , military-ambush , military-outpost , retrieval-of-secret-documents , suicide-mission , survival-pressure , tactical-warfare , underground-passages , vietnam-war , vietnamese-jungle , behind-enemy-lines