American Sniper
Hmm. It's a sad film - the main character has a very simplistic view of the world, when he's pushed to doing things that breach his sense of morality, he doesn't cope well.
From general resources, the real Chris Kyle wasn't as nice a person as made out in the film (not surprising, given the director).
On balance, I think it is a pretty decent film. Saved from being mawkish by using real veterans with nasty injuries at the end, when Chris is back in the USA.