What actors and actresses appeared in La guerre du cochon - 1986?

You're likely referring to the 1986 French film "Le Crabe-Tambour" (The Drum of the Crab) directed by Pierre Schoendoerffer.

Here are some of the key actors and actresses who appeared in the film:

* Jacques Dutronc as "Henri 'Le Crabe' Dougnac"

* Isabelle Huppert as "Anne-Marie"

* Claude Rich as "The Old Man"

* Daniel Prévost as "The Priest"

* Dominique Lavanant as "Sophie"

* Jean Yanne as "The Doctor"

This film is set during the French Indochina War and follows the story of Henri Dougnac, a French soldier haunted by his past experiences.