Heritage Trilogy is a series of military science fiction books written by Ian Douglas that focus on the United States Marine Corps.
In Luna Marine it is discovered that the Earth's own Moon contains mysterious technologies of long vanished species.
The US attempts to take those ruins currently held by the UN using another Marine force made from veterans from Mars, supported by the first antimatter-powered starship.
Twenty years after the UN War, the Earth's nations continue to fight in space for scraps of alien technology.
Crewed by an ancient artificial intelligence, in turns out that this ship belongs to a third race that is responsible for the destruction of the other two alien civilizations that once inhabited the Solar System.