Best war movie mistakes of 2017
Factual error: Before and during the Marines' arrival in Marjah, some of them are wearing Dust Goggles. These would've been first issued in World War II and continued into the early 2000s. The Battle for Marjah took place in 2010, by which point these goggles had been replaced by superior models such as ESS for some time.
Continuity mistake: When Megan is outside the supermarket asking people to sign her petition, a woman walks up and begins writing on the clipboard. In the first shot, the cap is on the back side of the pen. From the next angle, the woman is scribbling and lifts the pen to show the cap covering the tip that she was "writing" with.
Factual error: When Sgt. Harper and his men are prepping their gear for the water mission, he gives Pvt. Ocre one of his rifle plates. But the plate he gives him looks like a steel plate that been wrapped in plastic. In reality, the plates issued to Marines and Soldiers were and still are ceramic Small Arms Protective Inserts (SAPI for short). The plate seen in the film looks nothing like the actual ones.