This looks like a "celebrity" book on the face of it. However, that is not necessarily the case here - Jones has apparently had an interest in military history, and especially the Great War, for some considerable time.
So we need to look behind the facade of the so-called "celebrity" novel here. This book is not in that category.
Jones has two main protagonists - the male one being an under age, very intelligent lad from a poor family; the other one being a "tomboy" daughter of a reasonably wealthy family.
The book traces their war, initially apart but (inevitably in a novel!) later together. It takes us through descriptions of actions on the Western Front, nursing services ditto, and - interestingly - the Spanish Flu Pandemic.
We regard this book firstly as a good read, and then as a well written story about the war. We believe it can stand on its own amongst the many fiction books about the war.