Continuity mistake: In the Jail after when Rambo throws one officer out the window his hands are empty. But in the next shot he has his knife in his hand. (00:16:13)
Revealing mistake: Towards the end of the film where Rambo shoots up the computers in a building and the spent rounds are falling to the ground. It is clear to see that these are blank rounds. Where the bullet would sit in the case normally you can see the case is extended, This is where on a blank it is just crimped closed due to the lack of a bullet.
Continuity mistake: When Rambo throws the soldier out of the truck and has a dog fight with the state police vehicle his shoes are shown on the accelerator pedal. Those are shoes, not the genuine army boots he wears in the rest of the movie.
Audio problem: In the shot early on, where Teasel jumps his car and breaks a fence post, his car horn beeps when the car lands on the ground. A few shots later, when his car falls down, then flips over on the embankment, the car horn gets stuck. It's a totally different car horn sound this time.
Factual error: The state police cars have light bars that show blue on the left and red on the right. In real life, the light bars would be red on the left and blue on the right.
Continuity mistake: In the initial scene with Col. Trautman, we see the Sheriff wearing a lightweight jacket. Then, miraculously he's wearing a sheepskin coat.
Suggested correction: Teasle has his wounds cleaned while wearing his sheepskin coat over the undershirt (he removed his dirty uniform shirt/jacket). When the deputy enters with the maps Teasle has put on a clean uniform shirt while offscreen, then puts on his Sheriff's uniform jacket, which he wears when Trautman says Rambo was the best. It cuts to Rambo killing a wild boar and carrying the carcass to his hideout. Then Teasle wears the sheepskin coat over his uniform jacket, which he put on while offscreen.