First, break it down into an introduction, body, and conclusion. Many speech teachers recommend you summarize to the audience what you're about to tell them. Tell them. Then conclude with a summary of what you just told them.
War" is a short story by Jack London, about a young man scouting for his army. Sides and causes are never mentioned, so the conflict is reduced to its bare essentials; men are fighting, and the scout's job is to bring back information to allow his side an advantage.
