Dear Lee Child
You're an awesome writer. From a wannabe potentially envious colleague that should count for something, so let me repeat it: you're an awesome writer. Your main character is quirky and fun, your plots rock, your style rolls.
For those who don't know your work, let me give an example.
Blurb for Lee Child's "Gone Tomorrow":
When Jack Reacher witnesses a suicide on a Manhattan subway, he knows that there is more than meets the eye. Soon he's in deep, trying to unearth a dark secret for which both the feds and Al-Queda are willing to kill to keep from being revealed. Even in a city of eight million, a lone wolf like Reacher tends to stand out, and before long he is being hunted from all sides—which is exactly what Reacher wants.
See what I mean? Your books are page-turners, and would remain page-turners even if you were to remove the excessively horrific bits you inject into your novels. Trust me. You don't need them.
Keep the fight scenes if you will, let the blood flow in graphic detail. The war atrocities, though... please leave them to the reader's imagination.
A would-be fan