L'espoir

Espoir: Sierra de Teruel is a 1938–45 Spanish-French black and white war film, directed by Boris Peskine and André Malraux. It was not commercially released until 1945. Malraux wrote the novel L'Espoir, or Man's Hope, published in 1937, which was basis for the film. The director won the 1945 Prix Louis Delluc award.

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