I have a marine friend that was discharged with PTSD. The meds they gave him to help his symptoms made him worse. It was like he was roid raging all the time. He'd randomly just hit people and start fights. Once he got off the meds, his symptoms virtually disappeared.

They send you to a s***hole with a gun and authorize you to kill those who oppose your presence. Then expect you to shut it off like a switch... when it's not "appropriate".

No excuses here though, just common sense.