Book excerpt: Gateway to the South. Home of the Kentucky Derby and Churchill Downs. Louisville has a rich history, beginning with the city's discovery by General George Rogers Clark. The city played an important role in the Civil War, and during the Gilded Age, it became the Bourbon Capital of the World. During World War I, the city hosted 47,500 troops at Camp Zachary Taylor. During World War II, the U.S. Naval Ordnance Plant contributed to the war effort, making rounds for big guns during the late war. Author Bryan S. Bush takes the reader on a journey to discover the history of Louisville through the historic sites and locations from far past to the present day.