"Vince O’Hara has done the near-impossible! Here we have a comprehensive history on the naval aspects of World War II that offers new insights and fresh analysis, enhanced by a compelling read. With a plethora of maps, tables, and charts supplementing a well-organized and adeptly written account, this necessarily large and complex story is skillfully illuminated. This may well be O’Hara’s capstone achievement, synthesizing a lifetime of remarkable work into an exceptional addition to the World War II archive."—Thomas J. Cutler, author of Give Me a Fast Ship: The Heroic Actions of Ernest Evans and the Crew of USS Johnston"O’Hara’s broad thematic analysis is a compelling examination of World War II navies and their capabilities. His perspective on World War II provides valuable lessons and important insights, informed by decades of research and robust collaboration with talented historians from around the globe."— Trent Hone, author of Mastering the Art of Command and Learning War