From the Hero Games website:

WAR AMONG THE STARS!

In the early twenty-fourth century, Humanity encounters a new and frightening species: the Xenovores. Aggressive, vicious, and possessing more advanced technology than Humans, the Xenovores don’t just want to conquer Earth and her colony worlds — they want to enslave Humanity, a species they regard as a food animal....

Alien Wars is a military science fiction setting for Star Hero depicting the Xenovore Wars of 2303-2396. It includes:

—a complete history of the Wars, including the years leading up to them that set the stage for the conflict

—character creation information, including descriptions of alien species living in Human space and dozens of occupations (military and civilian) open to characters

—a thorough review of the United Earth Army, Navy, and other military branches

—descriptions of Human weapons, starships, and other technology

—a full report on the Xenovores, organized into player’s and GM’s chapters so the PCs don’t learn anything they shouldn’t know

—campaign and GMing advice

If you’re ready for exciting military action on alien planets and the icy depths of outer space, Alien Wars is just the setting for you!