What makes this volume essential reading? Ford does not simply rehash the dates and casualties. He answers a critical question: How do you break a line that is naturally defended by the sea on one side and impassable mountains on the other?
The Internet Archive (archive.org) allows borrowing of some Osprey titles through their controlled digital lending program. However, Campaign 234 may or may not be available, and wait times can be long. Osprey Campaign 234 Pdf
The PDF version (legally purchased) is actually superior to the physical book for certain hobbies: What makes this volume essential reading