A long, original and complex novel. The themes are mental illness and its treatment and WW1, but that's only scraping the surface, there is so much more. The style could be described as 'stream of consciousness' and a dictionary close to hand will help. But it's well worth the effort and becomes much easier as you progress and begin to empathise with the characters; most of whom are unforgettable creations. A really special read - I loved it.