Forum member Marko Kloos wrote the book "Terms of Enlistment" which is a very solid science fiction novel with what felt to me, Starship Trooper like thoughts on the military and citizenship. I read the book long before I saw Marko on the forum and can wholeheartedly recommend it.
Interestingly enough, I read Marko's book on the advice of another novelist; Stephen Gustav, author of "The Veil War" which is not science fiction but fantasy and another excellent read. I know Stephen personally and shoot with him regularly.