Other mistake: Major Turner tells Reacher that the men Parasource killed were shot twice in the back of the head. During Prudhomme's telling the images show the downed soldier on his back. The other is shown being shot and falling on her back. Then the two kill shots each. They couldn't have been in the back of their heads.
Jack Reacher: Never Go Back (2016)
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Directed by: Edward Zwick
Starring: Tom Cruise, Cobie Smulders, Robert Knepper, Aldis Hodge, Danika Yarosh
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More mistakes in Jack Reacher: Never Go Back
Turner: You know, I admit to being a little jealous when we talk. Go where you want. Eat when you want. Nobody telling you what to do or how to do it. It's definitely not the Army way.
Jack Reacher: Exactly.
Question: Why are the officers wearing dress blues in the beginning of the movie? The replacement commander of the 110th has a chest full of ribbons...The black military police officer at the command center. Everyday military officers would be wearing Class A's or fatigues.
Answer: Although it's technically a mistake, it is common in films to show military officers in dress uniforms with medals and ribbons to show that particular soldiers are important. A layperson may not know military uniform protocols but they can certainly tell that dress uniforms with a lot of medals signifies high rank at a glance.