Factual error: When Mike is being questioned, he calls himself a soldier. Marines always refer to themselves as Marines - soldiers are the army. (01:01:20)
Factual error: Scout Sniper Mike on a desert mission steps on a mine only to realise he has done so before stepping off it. There is no mine (maybe never was) where someone has to step off it before it explodes. All mechanisms are configured to explode when someone steps on it.
Suggested correction: Spoiler Alert: He didn't actually step on a mine, so the fact that this type of mine might not exist is irrelevant. Even if he should have known better, psychologically he didn't.
Factual error: The sniper rifle utilized by the main character has a Barska scope on it. These scopes cost under $300. The military, including the Marines use high end Leupolds which start at $1400-5000, Schmidt and Bender's which start around $2500-5000, Nightforce $2500-4500. The military would never in a million years issue a Barska scope which is made in China, since that would be breaking the law and the Berry Amendment. Plus it's a piece of junk which can't sustain the abuse of military use. (00:14:00 - 00:15:00)
Factual error: The main character is holding a flare, which turns out to be a smoke grenade. The US Military uses M18 smoke grenades. They don't use cylindrical tubes for smoke. The only tubes they use are for flares. (01:28:00 - 01:41:45)
Factual error: The two soldiers are using metal canteens for drinking water. The United States Military hasn't used metal canteens for over 50 years, and camelback hydration bladders have been in service since 1992. (00:18:00 - 00:18:30)
Factual error: The military uses the PRC-117f multiband multi mission radio manufactured by Harris Corporation, and individual soldiers carry MBITR's also known as AN/PRC-148 as handheld radios. In the movie he's using a Motorola or some other cheap CB trucker driver radio. The military doesn't use those. (01:02:00 - 01:03:00)