Whoever you'd be fighting would likely be just as competent as you. Imagine hearing gunshots and not knowing what they're shooting at. A warzone is where a stray bullet can take you out at any moment, there are veterans who have PTSD so severe it's a huge issue.
I once met someone with PTSD, they were a 9/11 first responder. Knowing veterans sometimes have even worse PTSD than that is horrifying.