Somebody (or somebodies) in Hollywood seems to be misunderstanding Jarhead.
The original movie, I mean.
Originally, the idea was that these soldiers sat around for weeks, building up fury and testosterone, but saw ZERO action. So they were pent up and volatile. The army was designed to make them that way, to yearn for the killing. By the time the end comes around, our hero is questioning everything he knows, and they still haven't seen combat damn near.
And some easily confused producer sees the film (probably zoned out a bit) and determined it would be perfect for a pointless war franchise where combat is prevalent throughout the story.
Boy, did the original ever go over your head, whoever you are.
Why not continuing that BS Behind Enemy Lines franchise? Or some other "true to life" war film like Black Hawk Down, if you want a war film with action?
Jarhead is not an action film. Turning the sequels into action films is to miss the entire point of the first story.