Sgt. Horvath?
He is one of my fav characters.
Him, Jackson, Caparzo or Capt. Miller.
I like the part when they're preparing to take the MG nest and Sgt. Horvath says to Capt. Miller:

Sgt. Horvath: "maybe I should go left sir?"
Capt. Miller: "the way you run, I don't think so."
Sgt. Horvath: "maybe I should go up the middle sir?"
Capt. Miller: "maybe you should shut up!"

LOL I love that part!!!!!!

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Caparzo