My gggrandfather is buried at Dayton Nat'l Cemetery. His name is John J. Hartman, he died 4/14/1921, and is buried in plot 2 27 35. If anyone in that area could check his marker and get all the info on it, I would appreciate it very much. I live in Alabama and don't think I'll be up that way anytime in the near future. Thank you for any help you can provide.