Claiming the Moon.
the last surviving superpower on Earth, the USA is fighting a war to conquer the moon and obtain its riches, However, the American military has its own battles to fight before it can claim victory.

He was sent into space to protect the US Lunar Colony. Instead, when faced with orders that would do nothing but get his soldiers killed, Sergeant Ethan Stark led a rebellion. Now he and his soldiers must fend off deadly aggression from their own country without igniting a full-scale war.