John R. Kinnear's History of the Eighty-Sixth Illinois Volunteer Infantry Regiment during its Service is a collection of events and details about the activities of this military unit during the Civil War in the United States of America. In the book, the reader will find the life stories of the soldiers, their exploits on the battlefield, strategic decisions of the command, and self-written testimonies of the participants in the events. The author has carefully researched the archives and documents of the time in order to recreate the most accurate picture of the participation of the Eighty-Sixth Infantry Regiment in historical events. This book will be a valuable resource for historians, researchers, and anyone interested in military history and the contribution of volunteers to the formation of modern civilization.