When the Adjutant General's Office published Raphael Thian's "notes" on U.S. military geography in 1880, it produced an invaluable research tool for generations of military historians to come. In this single documented reference volume, Chief Clerk Thian traced the confusing mutations through which the divisions, departments, and districts of the Army's command had evolved since 1813. The volume is divided into three parts, beginning with the names of the United States Army Continental Commands, the date and authority for their creation, location of the headquarters, geographical changes and...