Oolite Saga Series by Drew Wagar

Part 1 of the Oolite Saga.A brilliant scientist uncovers a terrifying plot to begin a galactic war. Aided by a talented, but reluctant and embittered combateer, he must stop the deployment of a super weapon he invented. A weapon so powerful it threatens to destroy entire worlds.

Part 2 of the Oolite Saga.When a series of linked murders forces GalCop to outlaw the shadow organisation known as ‘The Dark Wheel’, a mysterious top secret document must be found in order to stave off a galactic conflict. The document contains a devastating secret; the key to domination, power and control. A secret as old as space itself, the location of the legendary planet ‘Raxxla’.

When a deadly alien attack is launched across the galaxy, humankind finds itself under-prepared and overwhelmed. As star systems begin to fall, privateers take up the battle alongside the military forces and a desperate plan is hatched to stop the invaders once and for all, before humanity is eradicated. (The Oolite Saga, Part 3 )