You can hope to win the lottery and draw a ticket on a colony ship settling off-world, or you can join the service.
With the colony lottery a pipe dream, Andrew chooses to enlist in the armed forces for a shot at real food, a retirement bonus, and maybe a ticket off Earth. But as he starts a career of supposed privilege, he soon learns that the good food and decent health care come at a steep price … and that the settled galaxy holds far greater dangers than military bureaucrats or the gangs that rule the slums.