Continuity mistake: Martin Sheen's fingers are shown many times in close-ups of him reading files such as after the "Satisfaction" surfing scene. They all look the same except for when he picks up Kilgore's death card. The thumbs on this person's hands are much longer than we see throughout the movie and are not Martin Sheen's. (00:28:10 - 01:13:55)????
Continuity mistake: After the woman gives Captain Willard some water she tries to feed him rice from a spoon, which he doesn't eat. In the previous wide shot of the entire area there is no bowl of rice anywhere, there is only the pitcher of water at her feet and the rice bowl just appears. (02:53:55)????
Continuity mistake: Dennis Hopper Says, " these are all his children, man, as far as you can see" and we see a large leaf covering Chef's head and held on with a rubber band. Then when Dennis Hopper says," the man's enlarged my mind . do you know that if is the middle word in life?" there's a different leaf on his head that has much more green in it. (02:30:30)????
Continuity mistake: As Dennis Hopper gets the captain some water we see a wide shot of five bamboo cages with a guard standing between them. In the next shot as Dennis Hopper turns around from the fountain the guard is facing the opposite way and is now talking to the prisoner in the cage that was on the left (now behind them). (02:42:45)????
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)????
Audio problem: Approaching Kurtz' compound Lance starts drumming on two tin cans and if you listen closely they get the overdub wrong. At first we hear two distinct pitches, which are the actual sounds, picked up by the microphone but the last time he hits it we hear a third higher pitch which was overdubbed. There are only two cans not three and he doesn't change the way he's holding them therefore you can only have a maximum of two audible pitches. (02:29:05)????