One of the newest titles in the Casemate Illustrated Series is Military Dogs of World War II by Susan Bulanda
The book starts with an introduction on dogs in the military and their military roles as Ambulance, Communication, Draft/Sled, Sentry, Mine-Detection, and Messenger Dogs.
The second chapter covers Dogs in the United States Military, and the third chapter covers Great Britain and the Commonwealth. Smaller chapters follow covering the USSR, and the Axis, and a chapter titled Going Home. A nice list of Sources gives the reader a place to look for more detailed information and further reading. The book concludes with a good Index to quickly find relevant information for reference.