Tim Cooke 
Behind the Fighting [PDF ebook] 

For much of the time, Civil War soldiers were not fighting. Their greatest danger was boredom and their greatest concern was having enough to eat and a comfortable place to sleep. This book explores all aspects of soldiers’ experiences away from the battlefield. It also describes the range of welfare and support services that grew up to assist the fighting men, from regimental bands and chaplains to military engineering, signaling, and communications.