This is a curious piece whose dramatic arc takes a while to reach its full speed, but builds to a climax of considerable horror, involving cannibalism, genocide, loyalty and revenge. It is, I think, a mistake to label it an action movie: it is a drama, and played with a theatricality to which the viewer must adjust.
Nevertheless, once it gets into its stride this film has considerable charm.
The core cast bond closely and Frank Mcrae, who plays Sgt Tenga, and Marius Weyers (Sgt. Conklin) manage to give warmth to the invaders who threaten the survival of The People of the Hills.
The central relationship, between Nolte and Havers, is a fragile one which teeters on the brink of formulaic in Nolte's rescue of the sick Englishman and their mutual debts of gratitude and obligation. However, as they plunge into the conflict against the remnants of the defeated Japanese army, they each shock one another with what they are prepared to do.
I think the climax of the horror, which I do not wish to spoil, is brilliantly done. I felt the protagonists' turmoil and understood their brutal reactions, while still being shocked by it.
This film is open to charges of hokiness, theatricality and slowness, but, given a chance, it explores themes similar to those in The Thin Red Line; the imperialistic side effects of the Pacific war and the dehumanising effect of soldiering, against the fully human power of love and community.