Corrected entry: In several scenes, Rambo is carrying an AKSU-74 assault rifle which he has taken from a slain Soviet soldier. In the scene where Rambo and his accomplice are hunkered down in a hole and see a large amount of Soviet soldiers advancing, there is a close-up of Rambo's pilfered AKSU-74, And there is an American M203 Grenade launcher attached to it. Regular soldiers in the Russian military have never been issued the M203 under-barrel grenade launcher. The correct one would have been the Soviet GP-30 grenade launcher. Also, the M203 would not fit onto the AKSU-74 without first adding a special mounting bracket.
Corrected entry: Trautman and Rambo both repel down into the cave, Rambo climbs up out of the cave, and a 300 lb Russian soldier falls back down into the cave about 40 feet and hangs suspended in mid-air, on a rope tied to a rock. At the end of the scene, where Rambo picks up his gun and grenades, you can see the rope tied to the rock. This rock couldn't have weighed enough to support the weight of a man, and most definitely not heavy enough to stop a falling man.
Corrected entry: In one of the last scenes of the film, a Soviet helicopter collides with the tank driven by Rambo and explodes, splashing a large amount of burning fuel all over the tank. After the collision, Rambo survives inside the tank although looking very exhausted. A tank, as many people know, is made largely of steel, a very good conductor of heat. Wouldn't the burning fuel make the interior of the tank to like a heated oven?
Corrected entry: At the very beginning, Col. Trautman and his friends are showing around a photo of Rambo in an attempt to find him. The photo shows Rambo wearing the necklace he recieved from the girl in Rambo II. At the end of Rambo II, Rambo walks off into the wilderness so where did Trautman get such a nice photo of him wearing an unbuttoned dress shirt? (00:01:27)