Continuity mistake: When Enders gets shot numerous times at the end, he lies in a crater left from a shell. He begins to cough up blood, and it drips down the left side (as we look at it) of his mouth and chin. The view then switches to one behind him, facing Ben. There is no blood around his mouth or dripping down his chin. The view then changes back to the original one, and the blood's there again.
Factual error: Near the end of the film, Nicolas Cage is looking at the envelope of a letter sent by the Second Class Petty Officer that helped him pass his hearing exam. On the envelope, her Rating (a job in the Navy) is written as HM (Hospital Corpsman). During that point in history, those jobs were called PH (Pharmacists Mate). There were no HM's in the Navy then. The envelope should have read PH2 not HM2.
Factual error: Just an observation here: Do you ever notice how the wound/kill radius on a lot of the heavy artillery explosions is like 1-2 feet. In one explosion (usually against the Japanese), the artillery does massive damage, i.e. takes out an entire bunker, but another round will land almost right next to guy and it does virtually nothing. I also wonder where all the shrapnel is, almost all the explosions in this movie create a lot of dirt or a lot of fire, but no shrapnel or its effects.
Revealing mistake: In the scene where the soldiers are in the trench on Saipan's D-Day, a Japanese soldier points a gun at Yahzee's head and Yahzee freezes up. Then Enders comes up and slits the Japanese soldier's throat. If you look closely at the Japanese soldier's throat, you can see that there is no cut in it, just blood. (00:46:55)
Continuity mistake: During the end of the movie where Ben, his wife, and George are sitting on the rocks there is a visible error. In one shot the dish (in which Ben will wash Joe's dog tags) is sitting on a blue cloth. In the next shot where he actually washes the tags, it is sitting on the rock. (02:07:48)
Visible crew/equipment: In the final battle scene in which the heavy Japanese artillery is firing down on the column of U.S. Marines, One rather large Japanese shell explodes next to a tank and engulfs the tank commander in flames. You can clearly see the silver fire-retardant suit the stunt man is wearing.
Factual error: Throughout the movie, most of the artillery and grenade explosions produce massive fireballs, as though each one hit a fuel depot. In reality, explosions of most artillery shells produce a lot of dirt, dust and smoke but very little flame unless they produce secondary explosions of gas tanks, etc. In Windtalkers, even explosions that go off in empty ground produce prodigious fireballs.
Visible crew/equipment: In the scene (chapter 16) where Joe and Ben are riding on the back of a truck up a dirt road, there is a shot where Joe and Ben are leaping off the back of the truck after it was hit. You can see the shadow of the overhead camera very clearly in the bottom right hand corner. (01:04:22)
Deliberate mistake: In countless shots showing Japanese, and some shots showing Americans, being shot, take notice of the ground that they stand on. Almost every time a bullet(s) will hit below them at their feet, yet they still fall dead. In some shots even, there is a continuous line of shots from a single shooter, hitting the ground, yet numerous Japanese soldiers fall dead.BillyBlake
Revealing mistake: On the final combat, just after the Japanese uncover their cannons, one of the cannons take a shot but the recoil is a good half second too late.
Revealing mistake: In the scene where they come under fire by their own artillery if you look very closely you can actually see the flash pot used for the first explosion right before it goes off. Its the shot from the driver's side rear of the truck and it occurs right after Enders and Yahzee are talking about Yahzee's son and Enders orders Yahzee not to write letters out.
Audio problem: When Enders kills White Horse, he first tries to shoot him with his .45 and you can hear the hammer falling on an empty chamber. But if you look at Enders' pistol the slide is locked to the rear and there is no way the hammer could have fallen on the empty chamber. This also occurs earlier in the scene when Ox is trying to shoot the Japanese.