This book has information of all Pennsylvania Civil War Regiment (including the United States Colored Troops that were organized in the state). This is a research base book to find the information about one or more of the Pennsylvania Regiments and specific U.S. Colored Troops all in one place. The information is: who the commanding officers were are the organization (mustering in) of the regiment; what battles the regiment was involved in; the armies the regiment belonged to; total enrolled and break down of causalities; and when and where the regiment was organized and mustered out. This is the second book wrote by Christopher Cox. The title of the first is, History of Michigan Civil War Regiments: Artillery, Cavalry, Engineers, Infantry, and Sharpshooters.