Audio problem: On the beach Colonel Kilgore takes the radio phone from one of his soldiers and calls in the napalm attack on Vin Din Dop. If you look closely at his lips they do not go along with what he's saying. This happens again two shots later when he sends the Vietnamese woman and her baby to the hospital by helicopter. (00:47:25)????
Other mistake: As the woman that threw the grenade into the Medevac helicopter runs away they shoot at her from another helicopter. You can see by the puffs of smoke on the ground that the machine gun fire is not going anywhere near her, or her friend running in front of her as they fall to the ground dead. (00:44:30)????
Continuity mistake: As Colonel Kilgore calls out to the soldiers surfing in the water Captain Willard's band-aid on his right cheek appears out of nowhere for the first time in the movie. He had no band-aid on his face before this and we don't see him put one on, and there's no indication from the last time we saw his face that his scar started to bleed. (00:47:00)????
Continuity mistake: As he looks towards the surfers, Colonel Kilgore says, "Lance, the wind, the wind" and it's quite overcast. Then in the next shot of the surfers the sun is out. This scene switches between close ups of Kilgore and the other men and the sun is out in the close-ups but not in the other shots. (00:50:10)????
Continuity mistake: Right after the napalm explosion there's a wide shot of the beach as Colonel Kilgore and the two soldiers with him look across at the destruction. We also see Lance sitting alone in the crater and Captain Willard is nowhere near them. They cut away to the PBR for three seconds then back to the crater and the Captain is sitting next to Lance again. (00:48:55)????