It’s a clever expansion on the world-building of [b: Old Man’s War|36510196|Old Man's War (Old Man's War, #1)|John Scalzi|https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1509467059l/36510196.SY75.jpg|50700] with some recap, and some new info. It offers a look at the human perspective as well as the political dynamic, which is an angle of Scalzi’s sci-fi writing that always impresses me.