Allan Dwan directs this war drama starring John Wayne. During World War II, hard-bitten sergeant John M. Stryker (Wayne) earns the enmity of the recruits he trains for action in the Pacific. New recruit Peter Conway (John Agar)’s dislike for his commander turns to respect, however, when he saves him from a grenade. Meanwhile, the squad are forced to show their mettle when they are sent into Iwo Jima to take Mount Suribachi whilst under constant fire from the Japanese.