2007年9月7日金曜日

Strategic context
Operation MI - Typical of Japanese naval planning during the Second World War, Yamamoto's battle plan was quite complex.

Yamamoto's plan
Likewise, the Japanese operations aimed at the Aleutian Islands (Operation AL) removed yet more ships from the force that would strike at Midway. However, whereas prior histories of the battle have often characterized the Aleutians operation as a feint to draw American forces northwards, recent scholarship on the battle has shown that according to the original Japanese battle plan, AL was designed to be launched simultaneously with the attack on Midway.

Aleutian diversion

Main article: Midway order of battle Order of battle

Prelude to battle
In order to do battle with an enemy force anticipated to be composed of 4-5 carriers, Commander in Chief, Pacific Ocean Areas Chester W. Nimitz needed every available U.S. flight deck. He already had Vice Admiral William Halsey's two-carrier task force at hand — but Halsey was stricken with psoriasis and had to be replaced with Rear Admiral Raymond A. Spruance (Halsey's escort commander).

U.S. forces
Meanwhile, as a result of their participation in the Battle of the Coral Sea, the Japanese aircraft carrier Zuikaku was in port in Kure (near Hiroshima), waiting for an air group to be brought to her to replace her destroyed planes. The heavily damaged Shōkaku was awaiting further repairs; she had suffered three bomb hits at Coral Sea and required months in drydock. Despite the likely availability of sufficient aircraft between the two ships to re-equip Zuikaku with a composite air group, the Japanese made no serious attempt to get her into the forthcoming battle.

Battle of Midway Japanese forces
Admiral Nimitz had one priceless asset: American and British [1] cryptanalysts had broken the JN-25 naval code. Commander Joseph Rochefort and his team at HYPO were able to confirm Midway was the target of the impending Japanese strike and to provide Nimitz with a complete IJN order of battle. Japan's efforts to introduce a new codebook were delayed, giving HYPO crucial days; they were blacked out shortly before the attack began.

American and British code-breaking

Battle
Vice Admiral Chuichi Nagumo launched his initial attack wave of 108 aircraft at 04:30 on June 4. At the same time, he launched seven search aircraft (one of which was launched 30 minutes late), as well as combat air patrol (CAP) fighters. Japanese reconnaissance arrangements were flimsy, with too few aircraft to adequately cover the assigned search areas, which were laboring under poor weather conditions to the northeast and east of the task force.

Initial air attacks
Meanwhile, the Americans had already launched their carrier aircraft against the Japanese. Admiral Fletcher, in overall command on board Yorktown, and armed with PBY sighting reports from the early morning, ordered Spruance to launch against the Japanese as soon as was practical. At the urging of Halsey's Chief of Staff, Captain Miles Browning, Spruance commenced launching from his carriers Enterprise and Hornet at 07:00. Fletcher, upon completing his own scouting flights, followed suit at 08:00 from Yorktown.

Attacks on the Japanese fleet
Hiryū, the sole surviving Japanese aircraft carrier, wasted little time in counterattacking. The first strike of Japanese dive-bombers badly damaged Yorktown with two bomb hits, yet her damage control teams patched her up so effectively (in about an hour) that the second strike of torpedo bombers mistook her for an intact carrier. Despite Japanese hopes to even the battle by eliminating two carriers with two strikes, Yorktown absorbed both Japanese attacks, the second wave of attackers believing mistakenly that Yorktown had already been sunk and that they were attacking Enterprise. After two torpedo hits, Yorktown lost power and was now out of the battle, forcing Admiral Fletcher to move his flag to the heavy cruiser Astoria, but Task Force 16's two carriers had escaped undamaged as a result.
News of the two strikes, with the reports that each had sunk an American carrier, greatly improved the morale of the crewmen of the Carrier Striking Force. The surviving aircraft from all four aircraft carriers in the Carrier Striking Force landed on Hiryū. There they were prepared for a strike against what was believed to be the only remaining aircraft carrier of the American fleet.
When American scout aircraft subsequently located Hiryū later in the afternoon, Enterprise and Yorktown launched a final strike of dive bombers against the last Japanese carrier that left her ablaze, despite being defended by a strong defensive CAP of over a dozen Zero fighters. Rear Admiral Tamon Yamaguchi chose to go down with his ship. Hornet's strike, launching late because of a communications error, concentrated on the remaining surface ships but failed to score any hits.
As darkness fell, both sides took stock and made tentative plans for continuing the action. Admiral Fletcher, obliged to abandon the derelict Yorktown and feeling he could not adequately command from a cruiser, ceded operational command to Spruance. Spruance knew that the United States had won a great victory, but he was still unsure of what Japanese forces remained at hand and was determined to safeguard both Midway and his carriers. Consequently, he decided to retire east during the evening, so as to not run into a night action with Japanese surface forces that might still be in the area. In the early morning hours, he returned to the west to be in a position to cover Midway should an invasion develop in the morning.
While beating its retreat in close column at night, the Japanese cruiser bombardment force suffered a further trial. A sighting of the American submarine Tambor forced the cruiser formation to initiate radical evasive manoeuvers. Mogami failed to adjust her course correctly for a column turn and rammed the port quarter of her sister ship Mikuma. Over the following two days, first Midway and then Spruance's carriers launched several successive strikes against the stragglers. Mikuma was eventually sunk, while Mogami survived severe damage to return home for repairs. U.S. Marine Captain Richard E. Fleming was posthumously awarded the Medal of Honor for his attack on Mikuma.
Yorktown was sunk during salvage efforts, by three torpedoes from Japanese submarine I-168 on June 7. There were few casualties since most of the crew had already been evacuated. One torpedo from that salvo also sank the destroyer USS Hammann, which had been providing auxiliary power to Yorktown, splitting her in two with the loss of 80 lives.

Japanese counterattacks
After scoring a clear victory, American forces retired. Japan's loss of four out of their six fleet carriers, plus a large number of their highly trained aircrews, stopped the expansion of the Japanese Empire in the Pacific. Only Zuikaku and Shōkaku were left available for offensive actions. The other carriers that Japan possessed, Ryūjō, Junyo and Hiyo, were light carriers that had small airwings and comparatively poor survivability compared to fleet carriers. This major defeat for Japan came six months after the beginning of open warfare against the United States. That is almost exactly the maximum amount of time that Admiral Isoroku Yamamoto predicted he would have the advantage over the enemy before the tide would turn in America's favor.

Aftermath
Three U.S. airmen, Ensign Wesley Osmus (pilot, Yorktown), Ensign Frank O'Flaherty (pilot, Enterprise) and Aviation Machinist's Mate B. F. (or B. P.) Gaido (radio-gunner of O'Flaherty's SBD) were captured by the Japanese during the battle. Osmus was held on the destroyer Arashi, with O'Flaherty and Gaido on the cruiser Nagara (or destroyer Makigumo, sources vary), and it is alleged that they were later killed. The practice of burying the remains of the enemy at sea was common among all navies involved.

Allegations of war crimes
Although the battle has often been called "the turning point of the Pacific", it clearly did not win the Pacific War overnight for the Americans. Had the United States been obliged to focus its efforts on Japan, American intervention in Europe might well have been delayed, with incalculable implications for Germany and the Soviet Union.

Impact

Discovery
Because of the extreme depth of the ocean in the area of the battle (more than 17,000 feet/5200 m), researching the battlefield has presented extraordinary difficulties. However, on May 19, 1998, Robert Ballard and a team of scientists and Midway veterans (including Japanese participants) located and photographed Yorktown. The ship was remarkably intact for a vessel that sank in 1942; much of the original equipment and even the original paint scheme were still visible.

U.S. vessels
Ballard's subsequent search for the Japanese carriers was ultimately unsuccessful. In September 1999, a joint expedition between Nauticos Corp. and the U.S. Naval Oceanographic Office searched for the Japanese aircraft carriers. Using advanced renavigation techniques in conjunction with the ship's log of the submarine USS Nautilus, the expedition located a large piece of wreckage, which was subsequently identified as having come from the upper hangar deck of carrier Kaga. The main wreck, however, has yet to be located.

Japanese vessels
The Battle of Midway has been featured in several motion pictures. The first film about the battle was a documentary directed by John Ford, a Commander in the U.S. Naval Reserve at the time, and on temporary duty at Midway Island during the battle as a photographic and intelligence officer. While shooting 16mm color motion picture footage from atop the island's power plant, Ford was exposed to enemy fire by attacking aircraft and wounded in the arm by shrapnel. He received a Purple Heart and later, the Legion of Merit for his actions. The film Ford shot during the actual battle is included in his 1942 Academy Award winning documentary, The Battle of Midway.
Subsequently, the movie Midway, directed by Jack Smight, was released in 1976. This film generally portrayed the events fairly accurately, although it was criticized for suffering from several flaws, including a preposterous romance between a young American aviator and a Japanese American, the presence of American F4U Corsair fighter-bombers (which were not operational at the time of the battle), inaccurate warship models, and the promotion of Hypo's Commander Rochefort to Fleet Intelligence Officer. In addition, the 1976 movie vividly depicts Grumman F6F Hellcat carrier landings, whereas the battle involved its predecessor, the Grumman F4F Wildcat, which resembles the Hellcat but is distinguishable during landings due to the Wildcat's narrow-track landing gear. The Hellcat did not become operational until 1943. The 1976 movie reused numerous battle scenes previously filmed for Tora! Tora! Tora! and was heavily criticized for this.

In film

Pacific Battles of the Second World War
Midway order of battle See also

Comprehensive Historic Overview

The Japanese Story of the Battle of Midway, according to US Naval Intelligence
Battle of Midway Movie (1942) - US Navy propaganda film directed by John Ford.
The Battle of Midway (1942) at the Internet Movie Database
Naval Historical Center Midway Page.
Battle of Midway

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