If you like mystery and detective stories, you may want to try Jacqueline Winspear's Maisie Dobbs series. Dobbs was a nurse during WWI and after the war becomes a private investigator. Many of her cases involve things that happened during the Great War.
She also wrote a stand alone novel about the war,
The Care and Management of Lies.
http://www.npr.org/2014/07/03/325491...ope-in-wartime