Kree-Nova War

History
A thousand years prior the beginning of the Quest for the Orb, began the war between Kree Empire and Xandarian Empire.

A Kree named Ronan made a pact with Thanos in order to exterminate Xandar, causing the Nova-Prime Irani Rael to call the Kree Ambassador asking for a testimonial of the Kree Empire condemning Ronan's murderous actions across the galaxy, the ambassador ignored her.

After Ronan achieved the Power Stone, he attacked Xandar with his ship, the Dark Aster, and a thousand Necrocrafts. With the aid of the Guardians of the Galaxy and the Ravagers, the Nova Corps managed to won the battle and retrieving the Power Stone.