"At the moment things tend to glorify war," said Jack Huston, who plays a sergeant. "It's great to show a heroes story, but what it does is it makes people want to go and be a hero and it's not always that simple. War is bleak, it's tough, it's brutal. People go home and don't come back physically and mentally ... I had no interest in making a war film. I wanted to make a film about the guys who go to war and what happens to them over there and what they bring back with them."