The book illuminates the changes-technological, institutional, and functional-of the U.S. Navy from its days as a small frigate navy through the age of steam and steel to the modern era of electronics and missiles. Historian Craig L. Symonds captures the evolving culture of the Navy and debates between policymakers about what role the institution should play in world affairs. Internal and external challenges dramatically altered the size and character of the Navy, with long periods of quiet inertia alternating with rapid expansion emerging out of crises. The history of the navy reflects the history of the nation as a whole, and its many changes derive in large part from the changing role of the United States itself.