In some scenes the Japanese officer is carrying a Walther P-38, which is a German-made pistol, but in other scenes he's carrying a Nambu, which is a Japanese-made pistol.
Soon after the American plane crash-lands, the Japanese soldiers throw a hand grenade into the plane, and there's a big explosion. Later Captain Bourke and Airman Keller are shown inside the plane trying to operate the radio, and there's no damage inside it.
In the final scene two of the soldiers in the sand are facing to the right.As the camera does the long shot the same two soldiers are facing left.
The M1 Carbines used in the film have bayonet studs mounted under their barrels. However, this modification was not incorporated until after World War II, when the carbines underwent refurbishment and updating at Government arsenals.
Captain Bourke ends his radio conversation to the American destroyer with the words "Over and out." He should have said only "Out", since "over" would mean that the conversation was continuing and Bourke was turning it over to the destroyer for their comment.
During the shooting scenes between the Marines and the Japanese, some troops from both sides kneel or stand in plain sight of their opponents, and a few are killed as a result. In actual combat, soldiers would remain crouched or prone behind cover so as to present the smallest possible target to the enemy.
Captain Bourke's girl friend wears a 1960s style hairdo, rather than a World War II style.
The M1 rifle ammunition pouches worn by the Marines are obviously empty, as can be seen from their flat appearance.
During the initial dogfight, suspending wires can be seen towards the nose of the (model) planes when in medium-shot.
One African American belongs to the USMC platoon. At this time, US military was not an integrated military and Blacks were segregated. This black Marine couldn't have been a member of this platoon.