It's a real and serious issue. I don't care how many in here think they are RAMBO the human body and mind in each individual has specific limits. The brain in an act of self preservation can and will shut done if too many of it's limits are exceeded. It will be involuntary and the person can not do one thing to stop it.
Sad to say human physchology and the human brain are for the most part not open too dicsussion nor in many venues taken seriously in the military depite the fact that understanding it and using it may save many of our troops lives both on the battlefield and after. The one place I know of where it is taken deadly serious is The Navy submarine fleet. The officers and senior NCO's watch close for problems.
Different missions.
...and I would add that the mind can also do amazing things with serious motivational factors involved. For instance, a veteran Taliban wants to cut your throat while you sleep.
There needs to be an avenue for getting the liability out of the field asap or people will do what they have to do, to survive.
The sad thing is that they will punish the enlisted grunt for assaulting this guy, when the person who is responsible is the person who had the authority to get him out of the field...and didn’t.