Silent, but Deadly

You tap Cpl. Carter on his shoulder and ask him to give you a quickie (lesson, that is). He looks at you and slaps the living crap out of you. "Get out there and do what I told you to do. You play too many games, Pvt. Jones! Get up to the observation tower and raise the flag."
Tears are flowing down each cheek. You never meant any harm. You dry your eyes and run into the cover of darkness.