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| Kure Operation (1945) | |
|---|---|
| Conflict | Kure Operation (1945) |
| Partof | Pacific War |
| Date | March–August 1945 |
| Place | Kure, Hiroshima Prefecture, Inland Sea, Japan |
| Result | Allied air and naval supremacy; destruction of Japanese naval assets |
Kure Operation (1945) The Kure Operation (1945) was a concentrated series of United States Navy and Royal Australian Air Force air and naval strikes against the Imperial Japanese Navy base at Kure, Hiroshima during the final months of the Pacific War and the closing phase of World War II. The operation targeted remaining units of the Kantai Kessen-era fleet, dry docks, and shore facilities supporting the Yamato-era battleships and aircraft carriers, accelerating the collapse of Imperial Japanese sea power prior to the Surrender of Japan and the Occupation of Japan.
By early 1945 the United States Pacific Fleet and United States Fifth Fleet had advanced across the Marianas Islands, Philippine Sea, and Okinawa. The Battle of Leyte Gulf and subsequent carrier strikes had reduced active elements of the Imperial Japanese Navy to sheltered anchorages such as Kure Naval District, Sasebo Naval Base, and Maizuru Naval District. Strategic planning by Admiral Chester W. Nimitz and Admiral William Halsey Jr. emphasized neutralizing remaining capital ships to prevent a last-ditch surface engagement reminiscent of the Battle of Surigao Strait or the hypothetical Decisive Battle (Kantai Kessen). Intelligence from Ultra-style signals, photo-reconnaissance by Vought F4U Corsair and F6F Hellcat units, and reports from United States Army Air Forces and Royal Navy assets identified Kure as a primary concentration of Yamato‑era hulls, cruisers, and escort vessels.
Allied task forces organized for the operation included elements of the United States Third Fleet under Admiral William F. Halsey Jr. and the British Pacific Fleet complementing carrier aviation from Task Force 38. Carrier air groups embarked on Essex-class aircraft carriers, Independence-class light aircraft carriers, and Illustrious-class aircraft carriers provided multi-role strike and patrol capabilities. Surface escort forces included Fletcher-class destroyers and Cleveland-class light cruisers for anti-aircraft and anti-submarine screens. Opposing forces at Kure comprised surviving units of the Combined Fleet, including inactive or partially repaired Yamato, Haruna, Kongō, Katori and numerous Yūgumo-class destroyers, as well as auxiliary vessels and repair facilities in Kure Naval Arsenal and Hashirajima anchorage.
Air operations combined strike packages of Grumman TBF Avenger torpedo bombers, Douglas SBD Dauntless and Curtiss SB2C Helldiver dive-bombers, escorting F6F Hellcat and F4U Corsair fighters, and Grumman F7F Tigercat night-fighter elements in later raids. Tactics emphasized low-level torpedo approach lanes and high-angle dive profiles to defeat anti-aircraft concentrations stemming from Type 91 torpedo defenses and 25 mm Type 96 anti-aircraft gun batteries. Coordinated photo-reconnaissance using B-29 Superfortress detachments and carrier-based cameras enabled target refinement against dry docks, floating docks, and repair ships. Mine-laying by PBY Catalina and TBF Avenger aircraft in approaches to the Inland Sea supplemented aerial bombardment, while carrier task groups executed suppression of Japanese aerial interception using CAP patrols and Combat Air Patrol doctrine refined since the Battle of Midway.
Major strikes occurred during concentrated carrier raids in March, April, and July 1945 when Task Force 58 and later Task Force 38 launched multi-wave attacks on the Kure anchorage, the Hiroshima Prefecture coast, and nearby facilities. Notable engagements included the sinking and disabling of several capital ships at anchor following intense bombing and torpedo attacks, strikes on the Kure Naval Arsenal that destroyed maintenance facilities and Yokosuka Naval Air Technical Arsenal-type infrastructure, and repeated assaults that prevented sortieing of the Combined Fleet units to contest the Battle of Okinawa. Allied air superiority and stand-off strikes mirrored lessons from the Battle of the Philippine Sea and the Battle of Iwo Jima, with carrier-based bombers exploiting suppressed anti-aircraft fire and limited Kawanishi N1K intercepts. Submarine operations in concert with surface strikes interdicted coastal traffic and contributed to the isolation of Kure from reinforcement.
The operation resulted in the sinking or severe damage of multiple remaining Japanese battleships, heavy cruisers, and destroyers, destruction of repair facilities, and loss of naval aviation assets stationed ashore. Allied losses comprised aircraft attrition from anti-aircraft fire and operational accidents, and occasional damage to escort ships from shore batteries and kamikaze-style attacks reminiscent of tactics used in the Battle of Okinawa. Personnel casualties included aircrew losses among United States Navy Air Corps and Royal Australian Air Force squadrons, and Japanese naval and dockyard personnel killed or wounded during repeated bombardments. Precise figures remain subject to differing postwar assessments compiled by United States Naval History and Heritage Command and Japanese archival sources.
The neutralization of Kure eliminated the last practical concentration of Imperial Japanese capital ships, accelerating the disarmament process that culminated in the Bombing of Hiroshima and Bombing of Nagasaki and the Japanese Instrument of Surrender. The operation demonstrated the efficacy of carrier aviation against static naval targets, influenced postwar naval doctrine adopted by the United States Navy and Royal Navy, and shaped the disposition of surviving Japanese naval infrastructure during the Allied occupation of Japan. Surviving hulls were later used as targets during Operation Crossroads evaluations or scrapped under supervision of occupation authorities. The campaign remains a case study in late-war naval aviation, interdiction, and the transition from battleship-centric fleets to carrier-dominated maritime power.
Category:Pacific War Category:Naval battles of World War II Category:1945 in Japan