Factual error: During the movie Tom Skerritt is seen talking to the SEAL team from the carrier's flight deck. That's impossible; command & control operations are being performed from the inside of the ship. Besides, roar on the flight deck would be so loud making it impossible to hear each other.
Factual error: At the end of the movie when Willis calls in the F-18s for an air strike we see them engage the rebels by firing a couple of AIM-120 AMRAAM missiles at the ground. This is wrong because an AIM-120 is a air to air missile only. The warhead on the missile is only a few pounds and doesn't produce the cluster munitions like effect that they show. It would have made more sense if the 18s would have dropped a couple of CBU's (Cluster Bomb Units) instead.
Factual error: After the platoon killed the rebels in the village, Monica Belluci takes care of this severely injured woman and tells the "Doc" to pass her morphine. We see a close up and discover that she has a discreet but visible make-up. And that after days in the jungle.
Continuity mistake: If you watch the air support coming in to bomb the enemy troops from the time they take off to the time they leave, their load out varies a number of times. Watch as they approach for their bombing run - the weapons switch from white finned missiles to yellow-tipped green bombs and back before being fired.
Other mistake: When the Navy SEAL snipers start shooting at the ethnic cleansers, there are two snipers, the sniper that shoots second (he has an M-14) hits a Nigerian soldier in the back, they then go back to the sniper in the tree who tells Dr Kendrick to be quiet by. They then go back to the second sniper and he shoots again they show the same shot of the Nigerian getting hit in the back but from a different angle.
Plot hole: After the team takes care of the ethnic cleansers, there is a flat-bed lorry with a belt-fed weapon just sitting there. Since the cleansers came in from somewhere ahead of the team, why not load the refugees onto the truck and head out? If nothing else, it would increase their lead over the pursuers.
Continuity mistake: When Bruce Willis is on the phone with Tom Skerritt, Skerritt is holding the phone with his right hand and the antenna pointing up. In his next shot we see him with the phone in his left hand and antenna pointing down. So he could have changed hands but it doesn't seem very likely.
Continuity mistake: When the team does the high altitude jump, the plane is shown from the left side. The next scene is a night vision shot from the perspective of a jumper and it is no longer the same aircraft, most apparent in the tail section.