Continuity: Helms Deep's gate is destroyed by a battering ram, and shorn up like a barricade while Aragorn and Gimli hold back the orcs. However, when the orcs finally burst through the gate, it has reverted back to a fully intact gate that opens as if on hinges.

Continuity: At the destruction of Isengard, the dam is broken and the river is starting to break through the wall. In the wide shot as the river starts to break through, we see the wall breaking and all the CG Orcs at the top of the wall falling. In the next close-up, we see the CG Orcs still standing on top of the wall and when they do fall in this close-up, they fall very differently than in the previous wide shot.

Continuity: At Henneth Annun, Frodo and Sam have their blindfolds removed, and in this wide shot, behind them to their right one of the Rangers throws a cloth onto a crate that has objects lying on it, and sits down on the sack. In the semi close-up shots of Frodo and Sam, the cloth the Ranger threw lies differently and the things lying on the crate are different too. No one touched them.

Deliberate "mistake": During the Warg battle, the fourth shot after the close-up of Legolas shooting the arrow while riding on Arod, a Warg and rider attack a Rohan. In the background is a particular hillside with some dead bodies, and on the left of the screen lies a dead horse with an arrow in its rear. The very next shot, a horse and rider fall and a Warg attacks the rider. The background hillside in this shot, dead horse and all, is the same background plate as the previous one, only it's been flipped.

Continuity: After seeing the Mûmakil, Frodo and Sam are captured by Faramir's men. In the close-up shot as Frodo says, "We are bound to an errand of secrecy..." he's being held by one of Faramir's men around the shoulders and Frodo is holding the man's forearm. A second man is close to Frodo's left whose right hand is down. In the very next wide shot Frodo is holding the man's arm differently and the second man to his left is not only further away, he's standing differently and grasping the hilt of his sword in front of him. In the next two close-ups of Frodo, he's holding the man's arm exactly the way he was in the first close-up. It's also obvious in the wide shot that it's the scale double of Frodo.

Other: When Aragorn & Gimli are being pulled up the wall after defending the gate at Helms Deep, Gimli is a puppet (A very good puppet though.) when you see him in Aragorns arms just before they get pulled over the top by Legolas, only a quick shot but still visible.

Continuity: In the stable at Edoras, Éowyn gives the saddle to someone, then starts to walk towards Aragorn, and her long hair is spread out all around her shoulders. Cut to the close-up shot, and her hair is now parted at the neck, hanging straight down in front and back. When Aragorn walks away, her hair is all around her shoulders again.

Continuity: After Legolas leaps onto Arod, the men on horseback change in their arrangement, as they charge towards the Warg Riders. In one shot Gamling is just drawing his sword, while riding between Theoden and Legolas. Next shot is a Rohan rider directly behind Legolas. Then in the next shot of Theoden, it shows Gamling drawing his sword again, riding behind Legolas.

Revealing: When Theoden, Aragorn, Legolas and the Rohirrim soldiers ride out to meet the enemy just before Gandalf's return, they charge down the ramp into the stampeding Uruk-hai. If you watch the Uruk-hai very carefully you can see that some are running in slow motion.

Continuity: At Henneth Annun, Frodo and Sam have their blindfolds removed, and to their left are two barrels. In the 1st shot, one barrel has a brown cloth draped on it with a bowl of nuts and cracked shells and on the second barrel, candles that are not lit. In the 2nd shot, Faramir walks in and to his right the brown cloth under the bowl of nuts is draped differently, the candles, which are lit now, are a different variety and there are also ceramic jugs near the barrels now. After Frodo answers, "Yes. For my part," Faramir gets up and as he walks, the items on the barrels look the same as in the first shot.

Continuity: At Edoras, after Wormtongue spits on Aragorn's hand and runs away, a man shouts, "Hail Theoden King!" The crowd bowing at the bottom of the stairs in this wide shot, is more dense, than in the close-up shot after, where the crowd is very sparse to the right. Not to mention some people are arranged quite differently.

Revealing: After Haldir dies, Aragorn jumps onto the only ladder resting against the steps 'inside' the Deeping Wall. Hanging onto the ladder, he then falls on top of the Uruk-hai down below. The ladder is now lying on the ground perpendicular to the steps of the wall. However, when Aragorn runs up the stone steps on the side of the Keep, in the aerial CG shot of the wall below, the ladder is not lying on the ground where it should be, under the scurrying feet of the Uruk-hai.

Continuity: At the Armory, in the first close-up of Aragorn, he looks at a sword in his hand and tosses it down. The right sleeve of his coat is ripped almost all the way around at the seam by his shoulder, and the sleeve is folded over where it's ripped. When he tosses the sword down, there is a glimpse of his left sleeve, and it too is ripped and folded over at the seam. In his next close-up, the right sleeve's seam is ripped much less and it isn't folded over. The left sleeve however, is ripped like in the earlier shot. This is not a case of shot flipping.

Continuity: At the beginning of the scene, Sam is cooking the rabbits. Behind Gollum, Frodo's coat and pack lay on the left side of the overturned stone carving. In the following close-up, when Frodo goes over to his pack to take out plates and spoons, his coat is now on the right of the overturned carving. In the next wide shot, it's on the left again.

Continuity: After the tree has buried Merry and Pippin in its roots, the close-up of those roots (gnarled and twisted) do not look anything like the roots of the tree in the far shot (straight and broad), when Treebeard says, "Away with you, you should not be waking." Not a case of distance - in the wide shot when Treebeard arrives, just after they're let go, you can compare that shot to the shot just before, and the roots are VERY different, regardless of the Hobbits' size.

Revealing: Right after Gandalf gave warning that they would not be welcome at Rohan and jumped forward with his horse, next after him Legolas moved forward before Aragorn, you can see Gimli that rode with Legolas was a fake Gimli, the color of his skin was not normal, and he was too stiff.

Continuity: In the shot where you see Gandalf, Eomer and the Rohirrim riders appearing in the East, you can see that the Uruk-hai's shadow is pointing towards Gandalf, i.e. towards the direction the sun is supposedly coming from.(From the viewpoint of Gandalf and Rohirrim, as they ride down the hill towards the Uruk-hai.)

Continuity: After Legolas yells, "A scout!" Aragorn runs back towards the Rohirrim to warn them. In the first shot, he's running down the hill, straight ahead of him, is Theoden on his horse, Éowyn leading two horses on foot and people to her left. In the next shot, Éowyn's two horses are pointed to her right, there aren't any people to her left, and now standing between Theoden and Éowyn is Gimli with Arod.

Continuity: As the Uruk-hai charge the walls of Helm's Deep, the elves release their arrows first, no problem here. However, when the Rohirrim shoot, the arrows that strike the enemy are not the short, brown-leather fletched arrows that they should be using, but the long white-fletched elven arrows.

Continuity: At Osgiliath, when Frodo turns to face Faramir, just before Faramir kneels in front of the Hobbits, the Ring and chain hang outside Frodo's shirt. Yet just before Faramir says, "Then it is forfeit," the Ring is tucked inside Frodo's shirt.