Update: This story is false.
Audie Murphy had two sons, but they never had children, save one adopted daughter.
Audie Murphy's grandkid couldn't have been kicked out of West Point, because he didn't have any grandchildren.
One of Audie Murphy’s grandchildren attended West Point in the late 90’s.
At one point, he was doing something he shouldn’t have been and an instructor (officer) informed him of that and Cadet Murphy blew him off and kept doing whatever it was.
The officer tapped him on the shoulder to get his attention and kid turned around and hit the officer’s arm away and said something along the lines of “Don’t touch me…you don’t know who you’re fucking with.”
Cadet Murphy…didn’t make it through West Point.