The Ghost Ship Carthage

From the introduction: As the crucible of the Great War consumed the Archon Empire with impunity, its searing heat gradually melted the Archons’ ironclad ethics to slag. The Carthage began as a medical ship on a mission of mercy to the Kaltorans of Haven, but as the Archons’ cause grew every more desperate, she received a dread new purpose: harvest Kaltoran refugees, and Nephilim prisoners of war to develop new bio-weaponry for immediate deployment on the front.