I guess that Hacksaw Ridge could probably best be compared to the great Gary Cooper film Sergeant York which hewed pretty close to the truth about Alvin C. York, his background in Eastern Tennessee and his exploits in World War I.
Like our protagonist Desmond Doss here, York had a rural background and joined a pacifist religious sect. Unlike Doss, York grew up as a hunter and was a dead shot. He wasn't sure what he would do if a combat situation arose. But he did what he did and got every decoration imaginable including the Congressional Medal Of Honor.
Doss had a tougher row to hoe. He would not touch a weapon and the film will show you why. He felt it his patriotic duty to join, but as a combat medic, save lives rather than kill. With no weapon to defend his own person, this medic saved a lot of people at an engagement at a place dubbed Hacksaw Ridge in the Battle of Okinawa.
In Sergeant York, Walter Brennan's country preacher character says that Gary Cooper has the 'using kind of religion'. That might well be said of Andrew Garfield as Desmond Doss who got a Best Actor Oscar nomination as Doss. Cooper won one of his two Oscars for Sergeant York and Garfield really suggests his character in what he does with Doss.
The battle scenes are suggestive of Saving Private Ryan, director Mel Gibson staged them well. Hacksaw Ridge did win a pair of Oscars for its Sound. Gibson got nominated for Best Director and the film itself for Best Picture.
Hacksaw Ridge shows the horrors of war and from it the beauty of heroism when people have to summon their personal best and become more than themselves. The Doss story is one that deserves telling and retelling. Thanks to Mel Gibson it will be permanently retold.