The Light Years
By Elizabeth Jane Howard
In 1937, the coming war is only a distant cloud on Britain's horizon. As the Cazalet households prepare for their summer pilgrimage to the family estate in Sussex, readers meet Edward, in love with but by no means faithful to his wife Villy; Hugh, wounded in the Great War; Rupert, who worships his lovely child-bride Zoe; and Rachel, the spinster sister.
Its sequel, Marking Time, is set during World War II.