Hacksaw Ridge.
It's a shame Mel Gibson's a bit of a knob, because he's one hell of an actor/director. This was a superb film. Fantastically inspiring true story as well. (For those who don't know, it's about Desmond Doss, a Christian medic who refused to carry a weapon in WWII and ended up saving 75 men's lives during the Battle of Okinawa and receiving the Medal of Honor for his exploits.) If I had any complaint, it's that the otherwise incredibly brutal battle sequences were slightly spoiled by having people somersaulting through the air after an explosion like it was Commando, but it was a minor quibble. This is still the best war film I've seen in a long time (Dunkirk included).