Book excerpt: Fast cruisers, the eyes of the fleet, were the standard-bearers of empire, the ultimate warships of gunboat diplomacy—no other vessel class was so well equipped to serve as both a working war machine and a projection of national might. Cruisers and Battle Cruisers explores the pivotal importance of cruiser-class ships to naval warfare and, in a wider scope, world politics. In vivid but accessible detail, it describes the milestones of cruiser design and deployment from mid-19th century development of steam-propelled, ironclads to the World War I introduction of battle cruisers; from the decisive naval engagements of World War II and the addition of missiles and computerized systems to the most recent developments. Readers will see how specific technological changes progressively increased the destructive power of cruisers and altered their combat roles, how design innovations altered the quality of life aboard ship, and how cruisers came to be called upon to serve a variety of noncombat roles in war and peace.