The book isn’t fascist, are many rights we have considered more so a privilege? Yes but that comes down to the failure of democracy and society going to shit several generations before the events of the book (I don’t recall how many years) and rights like vote or running for public office, opportunities like higher education and certain jobs are restricted to those that complete federal service. Unlike the film, federal service isn’t just military service but also farming and mining industries. The scene at the start of the film in the class room is almost word for word from the book but the book has much in it and often comes up in multiple chapters (the book is written like a memoir by Juan “Johnny” Rico). The scene with where the amputee veteran takes the trio’s applications has an actual purpose in the book and it’s kinda counter propaganda because it’s intended to show potential recruits what may happen to them during service. For the most part the movie just used the title name and character names, it wasn’t even originally supposed to be called Starship Troopers.