Unrelenting (Kris Longknife, #13)

The aliens attacking the planetary system of Alwa are an enemy unlike any Admiral Kris Longknife has ever encountered before. She doesn't know who they are, only that they worship a being known as the Enlightened One and are unafraid to sacrifice themselves against her fleet. But Kris faces more than just the fanatical behavior of an alien armada. A saboteur has infiltrated the military's medical facility and unleashed an epidemic that has spread throughout the fleet without warning. Seventy-two career military women are down with something not even the aliens could do to them - including Admiral Kris Longknife....