Johnny and the Dead is a book about a boy who can see and talk to the deceased folks in his local graveyard. Terry Pratchett uses this short kids’ novel to deal with the importance for living people to remember the dead (and the dead people to forget the living). The basic plot is that the village council wants to put in a new condo development on the graveyard and the dead people tell Johnny to stop them. Johnny gets his friends together and (this is where the book really shines) do not organize a protest or anything big and outside the scope of what a bunch of 11-year-olds could conceivably do, they just ask questions about the people who are in the graveyard.
Now, it’s Terry Pratchett writing this, so the characters are funny, but the situations never really are. Even though it’s a bit dated (it’s from the ’90s), it’s a pretty excellent story for Remembrance Day, especially since it talks about how sad it is that soldiers go off and die (instead of doing some bullshit celebratory thing about their noble sacrifices or whatever). Also, it’s the middle book of the Johnny Maxwell trilogy, but I haven’t read the first one and did not feel like I was missing anything.