A Very Long Engagement(2004)

Set in France near the end of World War I in the deadly trenches of the Somme, in the gilded Parisien halls of power, and in the modest home of an indomitable provincial girl and her relentless search to find her fiancée, who has disappeared. He is one of five French soldiers believed to have been court-martialed under mysterious circumstances and pushed out of an allied trench into an almost-certain death in no-man's land. All an investigation into the arbitrary nature of secrecy, the absurdity of war, and the enduring passion, intuition and tenacity of the human heart.