Continuity mistake: The SAM that's used to shot down the F-18 is a BRDM-2 mounted 9K31 Strela-1 which uses either 9M31 or 9M31M IR missiles. The missiles seen flying after the F-18 aren't either of those models. (00:18:40)
Factual error: NATO officials are not against sending missions to rescue soldiers behind enemy lines. In fact, they are more than willing to send a rescue mission if there is a soldier behind enemy lines. Piquet would have been punished for trying to stop the rescue mission, and for only caring about the peace treaty, as NATO officials would not have tolerated Piquet's bad attitude towards the rescue mission, or him only caring about the peace treaty. They know that rescue missions do not start wars because peace treaties have mechanisms to prevent just that.
Factual error: The heat seeking missiles would not have gone after the fire ball created by the fuel tanks as shown in the movie. Heat seeking missiles don't go after just any heat. They go after specific frequencies of infrared found in jet engines. (00:20:00)
Continuity mistake: At the end when the 3 Marine helicopters take off to rescue Burnett one of the 3 has their side door open. The position of this helicopter changes instantly between camera cuts. It goes from left to central of the 3. (01:26:50)
Continuity mistake: When the soldiers find Stackhouse one of them stands on his injury. When the shot changes to Burnett's point of view, the soldiers haven't reached Stackhouse completely yet. (00:28:50)
Continuity mistake: When being confronted by the resistance fighters in Hac, Burnett has a gun to his right cheek in one shot which moves to his left side by his neck between instant cuts. (01:08:10)
Continuity mistake: When Burnett climbs out of the mass grave, he is completely covered in mud. In the flashback at Hac however his face is almost completely clean when he emerges from the graves. (00:45:00 - 01:07:50)
Revealing mistake: When Stackhouse is shot, the smoke doesn't come from the gun. It comes from the hill. (00:31:30)
Audio problem: At the start a yellow jacket says to Burnett about loosing a finger. However, his mouth doesn't match what he is saying. (00:04:40)
Continuity mistake: While speaking with the Admiral, Burnet's collar is turned up at the back of his neck. When he leaves and is talking to Stackhouse it's lowered and neat. When Stackhouse turns him round to speak to him, it's raised again. (00:11:40)
Factual error: Fighter jets cannot dodge heat seekers head on. Missiles are simply too fast to be dodged head on by a jet due to the fact that fighter jets have to be at full throttle to stay in the air. (00:20:50)
Suggested correction: Actually they can. Head on presents less of thermal signature to the missile, as the aircraft engines are in the back. A radar guided missile could not be dodged so easily, however.