Though completely unsung and commonly left out of battle histories, nothing is more important than the details of logistics and support operations during a military campaign. Without fuel, food, transport, communications, and medical facilities, modern military engagement would be impossible. Peter Nash compares the methods the British and American navies developed to supply their ships across the vast reaches of the Pacific Ocean during the first part of the twentieth century. He argues that the logistics challenges faced by the navies during World War II were so profound and required such innovative solutions that the outcome was the most radical turning point in the history of mobile logistics support. He shows how the lessons learned during the final campaign against Japan were successfully implemented during the Korean War and transformed the way naval expeditionary force is projected to this day. The foreword was written by the Royal Navy's current Second Sea Lord, Vice Admiral Sir Alan Massey.