To the officer, what does it appear that the boys were doing? Why is he disappointed in them?
When the naval officer comes on shore, he sees the boys chasing Ralph. The boys are really trying to kill Ralph, but the officer thinks that they are only playing some kind of war game or something like that. He says "fun and games" in a questioning sort of way and then asks if they have been having a war.
The officer is disappointed with the boys because he does not think that they have done a very good job of keeping themselves clean and looking civilized. He says that the way they look and are acting is nor really what you would expect of English kids.