Most, if not all, of the actors portraying the soldiers in the film are members of The Church of Jesus Christ of Latter Day Saints, except for the actor who plays Gould, he is the creator of "Avatarism" an open source philosophy of embodiment based on the Sanskrit word "Avatara" meaning godlike humans or superheroes.
The trivia item below may give away important plot points.
The snowflakes that are continuously falling in the film are actually instant potato flakes. In the scene where Deacon aims to shoot a German soldier who is harming the French lady, his gun appears to get stuck, allowing the German soldier to escape. The actor made it look like it was a part of his script, but in reality, the potato flakes jammed the mechanism of the gun.