Helen Simonson's previous book, Major Pettigrew's Last Stand, gently but firmly took on Britain's classism and racism with a charming love story. The Summer Before the War adds in sexism, homophobia, militarism, pacifism, socialism and almost every -ism you could imagine in a book that somehow pulls it off, even as you see the author's hand in this story of a young woman facing adulthood.
Nostalgia is the emotion that colors most of the book, looking back to a time before a World War was even conceivable. There's an intersection between young folks of the upper class and the upper middle class in the bucolic English countryside. Young men and women dreaming of love and duty become caught up in the hard realities of all those "-isms," and their struggles to reconcile them echo to the present day.