Luna Marine:

Set against a backdrop of interstellar conflict, the story follows a war sparked by ancient Martian secrets, with the U.S. and its allies battling the formidable United Nations. As the conflict escalates into space, the U.S. Marine Corps leads the charge, facing not only the enemy but also hidden threats from the Moon that could alter the balance of power. With scientists racing to harness incomprehensible technologies, the UN's deadly strategy could change the course of the war, prompting a desperate stand on Luna.