The Death Guard series in Warhammer 40,000 runs to 2 books. Below is the full reading order in series sequence, so you know exactly where to start Death Guard and what to read next.
Original summaries and chronology labels generated from the same catalog powering the atlas.
Chris Wraight
This novel rides with a warband of the Death Guard aboard their decaying plague-hulk, offering an intimate, blackly comic look at life among the Plague Marines of Nurgle. As old veterans bicker and rot in their devotion, a new campaign and a fresh recruit force the warband to confront what their long service to the Grandfather has truly made of them.
000.M42 - 333.M42
era date, medium confidence
Chris Wraight
Aboard a plague-ridden warship, a company of the Death Guard sails the warp in service to Nurgle, their bodies and souls reshaped by the Plague God's gifts. When a new campaign draws them toward a fresh atrocity, the warband's twisted camaraderie and grim devotion are laid bare. Chris Wraight offers a darkly characterful, surprisingly intimate portrait of Chaos Space Marines who have made peace with rot and ruin.
667.M41 - 999.M41
era date, medium confidence