I thought it might be a cool idea to start a thread in which everyone doing this particular exam in the summer could share what book(s)/poem(s) etc they're reading at the moment in preparation for this, and tell everyone what it's about just to sort of pool ideas.
I'll start, hopefully this'll work!
Reading: 'All Quiet on the Western Front' by Remarque
Summary: This is an awesome book. It's slighlty different from your conventional WW1 novel because its written from a German perspective. The book really conveys trench life very effectively, and also deals with the day-to-day struggles of the ordinary soldier as opposed to officers which is quite refreshing.
Full of graphic imagery which really convey the horrors of war, especially a scene in which a horse is shot and screams as it dies in agony (sounds horrible, I know, but works to great effect).