Includes over 150 photos. Victory is won or lost in battle, but all military history shows that adequate logistic support is essential to the winning of battles. In World War II, logistic support of the fleet in the Pacific became a problem of such magnitude and diversity, as well as vital necessity, that all operations against Japan hinged upon it. The advance against the enemy moved our fleet progressively farther and farther away from the west coast of the United States, from Pearl Harbor, and from other sources of supply, to support our fleet we constructed temporary bases for various uses, and we formed floating mobile service squadrons and other logistic support groups. These floating organizations remained near the fighting fleet, supplying food, ammunition, and other necessities while rendering repair services close to the combat areas, this support enabled the fleet to keep unrelenting pressure upon the enemy by obviating the return of the fleet to home bases. Because of the knowledge gained during his South Pacific service and particularly from his experience as Commander of Service Squadron Ten, the largest of the mobile squadrons, Rear Admiral W.R. Carter was chosen to write this history of logistics afloat in the Pacific. The opinions expressed and the conclusions reached are those of the author.- Secretary of the Navy, Dan Kimball

"This final narrative volume of Morison's history recounts the infamous campaigns for Iwo Jima and Okinawa, two of the most bitterly contested campaigns of the war.When the U.S. Marines landed on Iwo Jima, they expected to secure it within a few days. No one had anticipated Japan's determination to defend the island to the last man. Morison describes the Japanese defense system of camouflaged rifle pits and fortified gunning positions that held the Allies at bay and the heavy and continuous cover of naval gunfire that prevented even greater losses. As it was, the securing of Iwo Jima cost the United States more casualties than had been incurred in taking any other island in the Pacific. On Okinawa, the conflict stretched over six long, bloody months.As land forces struggled for every inch they took on the islands, the U.S. Navy faced the desperate fury of the kamimaze corps and its harvest of flaming terror: explosions, burning and flooded ships, searing injuries and death. Fierce weather, logistical complexities, Japanese submarines, and the unexpected death of President Roosevelt also took their toll. Morison concludes his epic account with the final skirmishes of the war, the fateful decision to drop the atomic bomb, and the delicate negotiations leading to Japanese surrender."

This research paper focuses on oil and its importance to operations in the Pacific during World War II. It specifically concentrates on the period before Japanese-U.S. hostilities, through the strike on Pearl Harbor, and concludes with operations in the Solomon Islands. A secure and reliable source of oil was one of the primary reasons that Japan chose to go to war with the United States that fateful Sunday in December 1941. The Japanese understood their country’s need for oil and other resources, but never conformed their military strategy to achieve their national objective of economic self-sufficiency. The Japanese Navy pedantically espoused a maritime strategy that required the United States Navy to fight a war according to the Japanese playbook. The Japanese Navy never understood the importance that oil, including its storage and transportation, had to all Navies that tried to steam the great expanses of the Pacific. This lack of logistical foresight was to eventually play a major role in Japan’s defeat in the Pacific. Commanders and their staffs must never forget the importance operational logistics plays in achieving operational and national objectives. This research provides the reader a valuable example of the importance of logistics in the execution of operational strategy while pursuing national goals. Although it is valuable to learn from one’s own personal mistakes, it is usually less painful to learn from someone else’s error, and thereby ensure that their blunder does not become your own.