So I got sent home early today...

[Hooahguy]

Or you could prove to him and the world that you are a stronger person than he is by letting any notion of retaliation go.
So exercise some self-control and let it go.

If your really want to be a Marine, then show some discipline and next time you see him, wave and say hello. If you are lucky he will be so caught off guard by your actions that it would be equal to beating him up.

Besides, beating him up solves nothing. All it does it further the conflict. Violence is a horrible thing that should only be used when there is no choice.

“Anger is an acid that can do more harm to the vessel in which it is stored than to anything on which it is poured.” – Mark Twain