Windigo Killers

Early in the book we meet the Windigo Killer. A person who kills people who go crazy. Like a person that starts taking people things after they die in battle. Xavier has become the Windigo actually in the end. He kills Elijah who went mad during the war. A very confusing beginning to the book says that Xavier is dead and Elijah lost his leg, you'll all have to read the book to find out what exactly happens in the end. Its a huge story but the windigo is the most interesting to me.