Hi, Jaxon,
Thanks for posting. I have a feeling you're not asking about LINKED, which isn't about war. You must mean WAR STORIES, which tells the story of a young soldier (now a grandfather visiting France where he once fought) in World War II.
I haven't planned a sequel, but I wouldn't rule one out either. We'll see, OK? No promises.
Thanks again, -----Gordon Korman-----