Wraith: The Great War Rulebook

Wraith: The Great War is a historical setting based on Wraith: The Oblivion]. It details the events occuring in Stygia following the first World War and during the Fourth Great Maelstrom.

Summary
From the back of the book:
 * The First World War is Over
 * Outside the wall of Stygia, the Fourth Great Maelstrom rages. Overhead, ghostly polots engage in dogfights against shrieking Spectres.  The gates of the Necropolis slam shut in the face of the storm.  And at the heart of the Empire of the Dead, a traitor works to topple what Oblivion never could.  Civil war is about to strike Stygia, and Charon -- the one wraith who can prevent it -- is missing.


 * For the Dead, the Great War has Only Begun
 * Journey back to a time of aces and anarchists, of lost souls wandering the Shadowlands thousands of miles from home. Behold an era of innocence newly slaughtered and unimaginable terror released.  From the heart of the Labyrinth to the killing fields of the Somme, from the skies above Stygia to the brutality of gangland Chicago, Wraith: The Great War opens a new chapter in the history of the World of Darkness.  Visit the Underworld of the Twilight Era and learn secrets even the Deathlords are afraid to whisper -- if you dare.