In this short excerpt, it shows a suggestion, friendly request, and advice. This could be helpful for Rainsford. Even though, the general is cynical and makes fun of the accident he knows that this is useful and needs to tell him to avoid this place.
He describes this place with its name and gives a hint that it is not a place to go. His story has an idea that Death Swamp is a bad place, not safe for people and animals. This is his contribution to a dialog with Mr. Rainsford.
