This is THE LIGHT BRIGADE by KAMERON HURLEY.
A book I hadn’t heard of before going over the Tor.com reviewers’ best books of 2019.
Some years ago, if you’d have said “military sci-fi” my answer would have been, what? no!
But this was fascinating! Mars and Earth are at war and Dietz has signed up to fight. He’s part of a team that is turned into particles of light and then beamed at lightspeed to wherever they’re ordered, sometimes Mars. But something keeps going wrong with his drops, he seems to be joining his team at different times and situations. And soon he learns the truth behind it all.
It is an intense read. So much happens and the reader is trying to puzzle it out along with Dietz. I’ve seen a few reviews since that talked about this book being a new take on Starship Troopers, which I don’t know about as I’ve not seen the movie or read the book. So I’ve come into this as a reader who doesn’t really know much about more classic SF or military novels.
But what I really liked about this book is the way she constructed her future world. Where there are no nations, just corporations. Where you are either citizens or not. And if not, you have no rights and privileges. You are a “ghoul”. Dietz is a one of these “ghouls”, once an inhabitant of São Paulo which has been wiped out by the Martians.
What a read this is. It is brutal and bloody. It discusses politics and capitalism that, while set in a future society, rings so relevant and true to our current one. Loved it.