Two brothers get into a fistfight, but are said to do so "twenty times a day." They fight a second time in a later scene. No blood or gore.
Two soldiers are attacked by enemies, being stabbed and hit with the butt of rifles. One is later shown dead and the other is presumed to be captured and wounded.
The actual violence doesn't start until around 40 minutes into the film.
A dead man is seen with a gunshot wound to the head.
Three island battles. Some blood is seen (in the colorized version of this film the blood is red, but in the black and white version it is black). Many explosions and gun fights, and many men are shot.
A Japanese troop is hit and stabbed several times by an American troop. No gore.
John Wayne and Forrest Tucker have a fist fight.
Wayne strikes a man on the cheek with the butt of his rifle.
A training sequence in which soldiers practice hand to hand combat.