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)????
Revealing mistake: A Medevac helicopter lands in the courtyard and later explodes when a Vietnamese woman throws a grenade into it. The copter that lands is not the one that explodes. The front of the helicopter that blows up is older and beat up and the window on the pilot's door does not have any green sun shade on top as the other chopper had when it landed. The one that explodes is also on a platform that collapses as it blows up. (00:44:15)????
Continuity mistake: When they first meet, Colonel Kurtz says to Captain Willard, "Have you ever considered any real freedoms?" and the Captain's shadow appears on the stone column to the right of the Colonel. The Captain is kneeling down and hasn't moved from his spot, but when we saw this column before his shadow was not anywhere near it. (02:39:25)????
Continuity mistake: When the Medevac helicopter first lands in the Vin Din Dop courtyard there are only soldiers on the left side of it putting the injured man in. In the next shot five soldiers and a Vietnamese woman appear standing on the right of the helicopter who weren't there before. (00:44:05)????
Continuity mistake: Dennis Hopper stands on the back of the boat and says to Captain Willard, "Yeah, well, they think you've come to uh - , to take him away". If you look to the left of the screen you'll see a piece of seaweed hanging off the roof of the boat. When Dennis Hopper walks back to the front of boat it's gone. (02:30:15)????
Continuity mistake: As Colonel Kurtz opens up the steel doors to the room where Captain Willard is being held we see thick black smoke engulfing the entire area behind the colonel. They cut away to the captain for few seconds then back to the colonel as he stands in the doorway, this time with no smoke at all behind him. (02:49:05)????
Continuity mistake: Before they board the sampan Lance says, "It's clear, Chief," and we see a wide shot of the sampan and PBR. No one goes near it, but for just one shot the dress on the clothesline is rearranged. The two straps it hangs from are pushed together. In all the other shots the straps are wide apart. (01:35:40)????
Continuity mistake: As Captain Willard approaches Lieutenant Colby there is a woman standing in the crowd to the right of him. The next time we see him a few seconds later everyone in the shot is standing in the same spot except the woman is gone and a man wearing a green beret appears in her place. (02:32:40)????