In reply to GravitySucks:
John Masters' First World War Trilogy
Now God Be Thanked
Heart of War
By the Green of Spring
Follows the fortunes of a number of families from the same fictional town in Kent, before, during and after the war, jumping between those at home and those at the front.
Very readable and historically accurate so far as the time line and major events re concerned.
They are all on kindle now.