Les Parias de la gloire

Les Parias de la Gloire English title Pariahs of Glory or Outcasts of Glory is a 1964 French/Italian/Spanish international co-production filmed in Spain. Directed and co-written by Henri Decoin, it is set during the First Indochina War and is based on the 1953 novel of the same name by Roger Delpey who also co-wrote the screenplay. Delpey served as an infantryman in the 151st Infantry Regiment from 1947–1949 in French Indochina then remained as a war correspondent writing four volumes of Soldats de Boue.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.