A Shouting of Orders conveys the history of the 99th Ohio Volunteer Infantry, an American Civil War unit formed from the counties of northwest Ohio surrounding Lima. The regiment, one among nearly 200 formed in the Buckeye State, has a history rich in personalities and experiences. A Shouting of Orders is the culmination of nearly 10 years of research and features previously unpublished primary source documents from key members of the regiment, including the lieutenant colonel and a company captain. McCray also heavily relied on the regimental papers kept with the National Archives, as well as contemporary newspaper reports.