"Fort Concho: Its Why and Wherefore" by James N. Gregory is a historical account documenting the establishment and significance of Fort Concho, written during the mid-20th century. The book explores the reasons behind the construction of this military post, situated in Texas, and its role in safeguarding frontier settlements against various threats, particularly from Native American tribes during the turbulent westward expansion of the United States in the 19th century. Throughout the narrative, Gregory delves into the richly woven history of Fort Concho, detailing the events leading up to its creation, including territorial changes following the Mexican-American War and subsequent migration patterns. He highlights the fort's strategic importance as a supply base along key trade routes and its function in military operations against Native American raids. The narrative also addresses the challenges faced by settlers and soldiers alike, while casting a light on the interactions between the military and Native American tribes. Overall, the book serves as both an informative historical record and a tribute to the tenacity of early pioneers and military personnel in a rugged and often hostile landscape. (This is an automatically generated summary.)