In the mission 'Gunfighters' Gunfighter 11's helicopter was damaged and smoking. At the end of the mission it wasn't smoking.
In the mission to take Bagram Airfield, the Player is given the option to use Hellfire missiles as part of an A-10 Thunderbolt II's loadout. The A-10 Thunderbolt II doesn't carry Hellfire missiles.
The Bofors L60 40mm cannon mounted on the AC-130 gunship fires at a rate of 120 rounds-per-minute. The cannon depicted on the gunship 'Reaper' is firing much faster.
Light machine guns are depicted without their bipods, and while this is an option, few soldiers would use a light machine gun without a bipod, as a bipod is important for the stability of a light machine gun from a prone position.
In the mission 'Gunfighters', Hellfire missiles are used against personnel. The Hellfire missiles is an anti-armour missile, not an anti-personnel missile.
Grammar mistakes in subtitles.
Spelling mistakes in subtitles.
The maximum ammunition for each weapon should be a multiple of the maximum ammunition in each magazine for that weapon; however, this is not always the case.
During the final mission, the SOFLAM has an option for a 'Bofers' cannon. Not only is this misspelled (it should be 'Bofors'), but the SOFLAM is being used for fighter jets which aren't equipped with Bofors cannons.
Deuce and Dusty are instructed to hide and booby-trap the ATVs. Doing this has the potential to cause collateral damage should a non-combatant happen upon them, so this is an unlikely scenario.
In the mission 'Gunfighters', one of the pilots says that she sees technicals. A 'technical' in military slang is a pickup truck mounted with a weapon, most commonly a machine gun. The 'technicals' that she sees are not armed and therefore are not technicals.
In one mission, Dusty states that about a dozen enemy combatants were killed. There were about half a dozen and not a dozen.