Armed with faith: Gibson film shows WWII feats of medic

When Desmond Doss climbed up Hacksaw Ridge — a 400-foot high escarpment on the island of Okinawa with a wall of dug-in Japanese soldiers at the top — he carried his Bible, his combat medic supplies and the weight of his moral convictions, but no weapon.

When the wounded American Army private eventually came back down for good, he was credited with repeatedly braving harsh enemy fire to treat fellow troops, carry them to the cliff's edge and lower them to safety. For his heroics, he was awarded the Medal of Honor — a rarity for a conscientious objector.

Now his exploits on Okinawa and his struggles to serve both his country and his conscience have been...