Behemoth: Rise Of Mankind Book 1

Three years ago, Earth was attacked by an invading force so devastating, only one ship in the fleet survived. With the aid of advanced technology, humanity retrofitted their surviving vessel. The Behemoth became a shield against any future incursions. Now a strange ship has arrived, heading straight towards Earth. The Behemoth heads out to intercept but the operation is interrupted by other visitors. The Behemoth must fend off the invaders once again but this time, the stakes are much higher.