1915 appears to be the forgotten year as far as the Western Front is concerned, with a limited number of books available which focus on events in that year.
Seeking to go beyond the coverage of the more general histories of the Great War, I picked up a copy of the "The Donkeys" and settled in for an entertaining read......and yes it is entertaining, but regretably that entertainment comes from the exaggerated writing style, value judgements, and hearsay that has been injected into the narrative. It's a polemic made palatable by a racy journalistic style.
As a "history", the book has been made redundant by the opening of the archives since the book was written at the beginning of the '60s. The subsequent outpourings of newer histories, even where 1915 and the British attacks are covered as part of a general review of the war, have much more to add to an understanding of the conflict in that year than this book.
It's "Use By Date" has clearly been reached!