At Imperial War Museum North in Manchester, a new exhibition - Once Upon a Wartime - celebrates novels that have helped youngsters engage with the battlefield horrors and domestic hardships at times of conflict.
Watch this BBC audio slideshow which tells us a little bit about three of the books in the exhibition - The Machine Gunners, Carrie's War and War Horse and answer the questions below.
1 Why do Charles McGill and his friends build a fortress in The Machine Gunners?
2 How does their relationship with the German parachuter end up?
3 What anecdote does the narrator tell about his life as a child in Manchester living near an RAF Ringway?
4 Were Carrie and her brother in Carrie's War happy in the countryside?
5 Why were children sent away from London in WWII?
6 When was War Horse written?
7 Who was interested in the British horses? Why?
8 Who tells the story in War Horse?
You can check your answers by reading the transcript here.