A decent interpretation
This film is a decent interpretation of "Les Centurions" of Jean Lartéguy. Admittedly, they cut out a lot of things, but that is understandable, given that they only had a couple of hours to tell the story. It would have been nicer if they made this into several films, or a television series. That would give more time, and do more justice to M. Lartéguy's classic work.
Also, "Boisfueras" in the book is a Eurasian. And it is "Esclavier", not he, who massacres the village males in retaliation for the murder of Merles. "Boisfeuras" does, however, conduct the interrogation. M. Lartéguy said he based "Boisfeuras" on the real-life Colonel Antoine Argoud. But, I also see strains of Colonel Trinquier and also Lucien Conein, in that both spent time in the Far-East.
"Mange la merde!"