Few warships of World War II had as brief but spectacular a career as did His Japanese Majesty's Ship Akagi, one of the largest and finest aircraft carriers in Nippon's once proud and formidable Imperial Navy (Teikoku Kaigun, literally, the "Empire's National Sea Army"). Throughout the first six months of the Pacific War, or, as the Japanese liked to call it, "The Greater East Asia War," the Akagi played an unusually prominent role, spearheading nearly all of Japan's more important carrier operations. During this critical period, which ended with our victory at Midway, Akagi participated in operations ranging across 120 degrees of longitude—from Hawaii to Ceylon—and thereby demonstrated to the world, and to our Navy in particular, the full potentialities of carrier warfare.
Laid down in December, 1920, at the Kure Navy Yard as a 42,000-ton battle cruiser, part of Japan's famous "Eight-Four Program" (eight huge battleships and four battle cruisers), the Akagi, in conformity with the terms of the Washington Naval Limitation Treaty, was taken in hand in 1923 for conversion into a first-line aircraft carrier (kokubokan). She was launched in 1925 and commissioned two years later, a ship of 36,000 tons standard displacement, 763 feet in length, and capable of at least 28.5 knots speed. Reckoned on a tonnage basis Akagi was, therefore, somewhat larger than our Lexington and Saratoga (likewise converted from battle cruiser hulls), but was considerably slower and does not appear to have carried more than 60 planes. Her defensive armament comprised ten 8-inch guns, plus twelve 4.7-inch and numerous smaller antiaircraft weapons. Originally four of the 8-inch guns were mounted forward in paired turrets, just below the upper flight deck, while the remaining six were mounted aft on either side of the main deck and quite close to the waterline.
A sister ship, the Amagi, was to have been similarly converted; but her hull received serious damage in the terrible earthquake of September 1, 1923. To replace her, the already launched hull of the 40,600-ton battleship Kaga, due to be scrapped under the Naval Treaty, was appropriated. Commissioned in 1928, the Kaga displaced 35,000 tons, but her shorter hull (715 feet), greater beam (11 feet more than Akagi) and weaker engines (91,000 horsepower instead of 131,000) gave her a designed speed of only 23 knots, according to pre-war Japanese statements. With her two enormous horizontal funnels (about 275 feet long, one on either side), the Kaga presented a most bizarre appearance.
In 1935-37 the Akagi and the Kaga underwent very thorough modernizations, emerging as near sisters in appearance. Alterations included the suppression of the lower flight deck (flying-off deck), extension forward of the upper flight deck, and removal of the 8-inch gun turrets and the mounting of their rifles aft along the side. The Kaga also lost her monstrous funnels, while both ships received small "island" superstructures—on the port side in the Akagi and on the starboard in the Kaga. It is likely, also, that the Kaga's speed was raised by several knots—probably to between 28 and 30 knots.
In November, 1941, these two ships comprised Japan's "First Flying Squadron" (Car Div 1), the Akagi wearing the flag of Vice Admiral Chuichi Nagumo, Commanding the First Air Fleet, whose assigned mission was the surprise attack on Pearl Harbor. Two other Flying Squadrons, the Second and Fifth consisting, respectively, of the 17,500-ton carriers Hiryu and Soryu and the new 29,800-ton Shokaku and Zuikaku, were also attached to the Striking Force, as were the old but modernized 31,000-ton, 28 knot battleships Hiyei and Kirishima, the new 12,000-ton heavy cruisers Tone and Chikuma, the old 5,700-ton light cruiser Abukuma, and nine of the newest and largest destroyers, the 1,900-ton Kagero, Shiranuhi, Urakaze, Isokaze, Tanikaze, Hamakaze, Akigumo, and the 1,850-ton Arare and Kasumi.
On November 17 the Striking Force departed from Saeki, on Kyushu's east coast, where for some weeks the carrier air groups had been undergoing intensive training. Five days later the ships anchored in Hitokappu Bay, in the bleak Kurile Islands, where they refueled and stood-by awaiting orders. These came on the 25th, from Admiral Isoroku Yamamoto, Commander in Chief of the Combined Fleet; and next morning the ships sortied on their secret mission, the nature of which was known only to Admiral Nagumo and senior members of his staff.
A week's slow steaming through the cold, gray mists of the North Pacific brought the force to a position about 800 miles south of the eastern Aleutians. Here on December 3, despite heavy seas, the ships fueled from five tankers; had this difficult operation failed, the carriers would have proceeded without their destroyer screen. On the 4th the Japanese altered course to 135 degrees. Two days later the pilots received their briefing for the attack. Next day, the 7th (Tokyo date), came the anxiously awaited code message: "Climb Mount Niitaka!"
Promptly the Akagi hoisted the flag signal, "Speed 24 knots. Course South." Even more inspiring to the Japanese crews was the dramatic appearance at the Akagi's masthead of the huge battle ensign which had flown from Admiral Togo's flagship Mikasa at the Battle of Tsushima, and which had been carefully preserved during the intervening 36 years.
Dawn of December 8 (December 7, West Longitude Date) found the Japanese force 230 miles due north of Pearl Harbor. At 0600 all six carriers began launching the first attack wave. Led by Commander Mitsuo Fuchida, commanding the Akagi's air group, this wave totalled 189 aircraft—54 dive bombers, 50 horizontal bombers, 45 fighters, 40 torpedo planes. These aircraft, which inflicted the major portion of the damage sustained by our warships and grounded planes, were followed an hour and fifteen minutes later by a second wave, consisting of 54 high level and 81 dive bombers escorted by 36 fighters. One pilot with this second wave reported enthusiastically, "Pearl Harbor in flame and smoke, gasping helplessly…" Actually, however, the Japanese did not learn—until it was too late—how badly they had hurt our Pacific Fleet.
After recovering all save 29 of their planes, the Japanese carriers turned northwest and steamed through heavy seas toward Japan, fueling once from a group of three oilers stationed along the retirement course. A planned strike against Midway Island, to have been made on December 11 by the Hiryu and Soryu, was cancelled because of severe weather conditions; but on the 16th these two carriers were detached at sea and, between the 21st and 23rd, made almost continuous strikes against Wake'" Island. In this operation the Second Flying Squadron was screened by the Eighth Cruiser Squadron (Tone and Chi kuma) and part of the 17th Destroyer Group (Urakaze and Tanikaze).
On December 24 the Akagi, Kaga, and various screening units arrived at Kure, where they were joined next day by the Shokaku and Zuikaku, which had touched briefly at Saeki. Three days later the Hiryu and Soryu, delayed by their Wake Island mission, also reached Kure.
Following a brief period of rest and servicing at Kure, the Akagi, Kaga, Shokaku; and Zuikaku sortied from the Inland Sea on January 9 and, accompanied by the Hiyei, Kirishima, Abukuma, and destroyers, proceeded to Truk. Three days later the Hiryu and Soryu also left Kure, but headed for Palau instead of the vaunted base in the Central Carolines.
Five days after departure from Kure the First and Fifth Flying Squadrons and screening units anchored at Truk, remaining there until January 17, when they sortied to support the operations in the Bismarck Archipelago. On January 20 planes from all four of the big carriers attacked Rabaul. Next day the Akagi and Kaga sent their air groups against Kavieng, while planes from the Shokaku and Zuikaku struck airfields at Lae, Salamaua, Madang, and Bulolo. On the 22nd Akagi and Kaga planes again attacked Rabaul, this time in support of landings which secured the place the next day. Then they headed for Truk, where they arrived on January 27 and were joined two days later by the Shokaku and Zuikaku, whose planes on the 25th had bombed the small airfield at Lorengau, in the Admiralties.
After an overnight stay at Truk the Fifth Flying Squadron left for Palau and Yokosuka. Two days later, while American carrier planes were attacking the Gilberts and Marshalls, the Akagi and Kaga left Truk for Palau, where they arrived on February 8 to find the Main Body of Vice Admiral Nobutake Kondo's Second Fleet, which had supported the Malay and Philippine invasions. Also in port were the Hiryu and Soryu, whose planes on January 23 and 24 had softened up the defenses of the small Dutch naval base on Amboina Island, captured a week later by Japanese landing forces.
Within a week of the Akagi's arrival at Palau the combined forces, under Admiral Nagumo's overall command and totaling four battleships (the fast Kongos), four carriers (Akagi, Kaga, Hiryu, Soryu), at least six cruisers, and fifteen to twenty destroyers, sortied and, after steaming through the Molucca Passage and the Banda Sea, reached a position east of Timor by the morning of February 19. The carriers then launched their air groups against Port Darwin, wrecking its airfield and shore installations and sinking the old United States destroyer Peary and nearly all the Allied transports and supply vessels in the harbor. Japanese losses were two planes shot down: a bomber from the Kaga and a fighter from the Hiryu.
Two days after their Darwin strike the Japanese carriers anchored in Staring Bay, Kendari, whose seizure had been completed several weeks earlier. Four days were spent at this improvised base near the southeastern tip of the Celebes. Then, on February 25, Admiral Nagumo, with his flag still in the Akagi, took the entire force to sea. Skirting Timor's northwest coast, he passed into the Indian Ocean and steamed west to a position south of Java, upon whose northern shores Japanese troops began landing the night of February 28- March 1, following the Battle of the Java Sea.
On March 1 the carriers launched strikes against Allied warships and merchantmen fleeing toward Australia. One victim was our oiler Pecos (with the Langley's survivors), which was first sighted at 1600 only thirty miles S.S.W. of the Akagi. Battleship, cruiser, and destroyer formations were also active that day, sinking, among other ships, the old United States destroyer Edsall and a large Dutch armed freighter. Two bombers from the Hiryu or Soryu (the accounts differ) assisted in the destruction of the Edsall, which went down at 1906 after a gallant but hopeless fight against overwhelming odds: Kongo, Haruna, Tone, and Chikuma. At 1747 these four ships had left the Main Body at 14° 34' S; 106° 51' E to engage the Edsall to the rear, the Main Body then steaming on a southeasterly course.
For the next several days Admiral Nagumo's powerful force steamed off Java's south coast to intercept Allied ships attempting to reach Australia. But his air groups appear to have been relatively inactive, limiting their efforts to searches which located various Allied ships for his surface units. In this manner our old gunboat Asheville, the four-stacker Pillsbury, and Britain's Stronghold were intercepted and sunk by Japanese warships. Details are still uncertain, but it seems likely that the Asheville and Pillsbury went down the night of March 2-3 in separate actions with heavy cruisers Atago (Admiral Kondo's flagship), Maya, and Takao, screened by two destroyers. In neither case did the Japanese tarry to rescue survivors, as they were anxious to expedite their next operation.
It is probable that Admiral Kondo's ships mistook the Pillsbury in the darkness for our light cruiser Marblehead (also a four-stacker), as only such an error could explain the Imperial Headquarters Communique of March 11, which jubilantly announced that "A Japanese cruiser formation, operating in the Indian Ocean west of Australia, on March 2 sank the 7,050-ton United States cruiser Marblehead, which was fleeing toward Australia." An earlier communiqué on March 5, had stated that "Japanese naval forces advancing in the Indian Ocean south of Java surrounded the British destroyer Stronghold…on March 2 and sank her," adding that "Other Japanese naval forces" sank the Asheville the following day.
The passivity of the Japanese carriers ended abruptly the morning of March 5, when the Akagi, Kaga, Hiryu, and Soryu sent their bombers and fighters against Tjilatjap, virtually wrecking the place and sinking nearly all the shipping which remained in the crowded little harbor. Air reconnaissance later reported that two gunboats and twenty-three merchant vessels (five large, three medium, fifteen small) had been sunk, beached, or set afire; and that over 200 buildings, including the railroad station, had been completely gutted by fire. The two "gunboats" presumably were the Dutch patrol vessel Canopus (773 tons) and surveying ship Tydeman (1,160 tons), while the merchant ship losses included the converted fleet repair ship Barentsz (4,819 tons, gross, formerly a K.P..M. freighter) and the unfinished auxiliary minelayer Ram (2,400 tons), launched in January and then towed to Tjilatjap.
Two days later, March 7, the South Java Operations virtually ended with a destructive surface bombardment of Christmas Island and anti-shipping strikes by Hiryu and Soryu planes, whose pilots reported sinking two merchantmen of 10,000 tons in the area south of Soenda Strait. Four days later the carriers and their screening units returned to the temporary base in Staring Bay.
On March 15 the Kaga was detached from the Striking Force and left for Sasebo, arriving there on the 22nd, five days after the Shokaktt and Zuikaku had departed Yokosuka for Staring Bay. The reason for the Kaga's return to the Empire is not clear. In any event, Japanese sources fail to confirm the war-time intelligence report that she had been damaged March 2 north of Lombak Strait by our submarine Sailfish. But the latter's claim of having successfully attacked a large Japanese naval unit off Lombak Strait was not unfounded, for it is now known that on March 2 her torpedoes sank the 6,440-ton aircraft ferry Kamogawa Maru.
On March 24 the Kaga's place in the Striking Force was more than filled by the arrival at Staring Bay of the Shokaku and Zuikaku. Two days later Admiral Nagumo put to sea and again entered the Indian Ocean, steaming due west and then northwest, toward the great island of Ceylon. He now had with him five large carriers (Akagi, Hiryu, Soryu, Shokaku, Zuikaku), three old but fast battleships (Hiyei, Kirishima, Haruna), about six cruisers, and nearly twenty destroyers—a force quite adequate to deal effectively with Admiral Sir James Somerville's hastily assembled Eastern Fleet, particularly under the new conditions imposed by carrier warfare, in which the Imperial Navy had shown such considerable ability.
Admiral Somerville's command at that time, so critical in the history of the" Greater East Asia War," consisted of five veteran battleships, three aircraft carriers (two modern, one old), two fairly modern cruisers, five old light cruisers, one modern anti-aircraft light cruiser, and some fifteen destroyers, plus five submarines (two British, three Dutch), one monitor, one armed merchant cruiser, and a few fleet auxiliaries and minor units: oilers, sloops, corvettes, and minesweepers. Several of these units, including the armed merchant cruiser Hector and the Dutch light cruiser Sumatra, were undergoing lengthy repairs and were, therefore, unready for sea.
As of April 1, the day on which Admiral Somerville received information that a strong Japanese force (estimated at three battleships, four or five carriers, and four or five cruisers) soon might launch attacks against Ceylon or India, the Eastern Fleet was organized into two task forces (one fast, one slow), as follows: Force "A"—the 24-knot battleship Warspite (flying the C-in-C's flag), fast carriers Indomitable and Formidable, the cruisers Cornwall and Dorsetshire (the latter under refit), the old light cruisers Emerald and Enterprise, and six destroyers; Force "B"—the old 21-knot battleships Resolution (flagship of Vice Admiral A. U. Willis, Commanding Third Battle Squadron), Ramillies, Revenge, Royal Sovereign, the old carrier Hermes, the light cruisers Caledon and Dragon, the Dutch anti-aircraft cruiser Jacob van Heemskerck, and eight destroyers. The aged battleships and cruisers were expected to suffer breakdowns at any moment, while many of the destroyers (some of them veterans of the First World War) were so worn-out that, in the words of Admiral Somerville himself, "it was a marvel that they still could keep running" (statement to the press, Washington, D. C., November 1, 1944).
By dawn of April 4 the Akagi and other Japanese carriers had steamed to within 500 miles of their first objective, Colombo, where they presumably hoped to surprise the Eastern Fleet at anchor. Around 1000, however, a Catalina flying boat approached part of the Japanese force (two battleships, two or three carriers, and two cruisers, plus destroyers). It was quickly shot down by six Hiryu fighters flying combat air patrol, its survivors being picked up by destroyer Isokaze. But the plane had succeeded in getting off a brief report of the sighting; Colombo's air defenses were accordingly alerted, while Admiral Somerville ordered the Eastern Fleet, then somewhat dispersed for refueling, to concentrate for the battle which appeared imminent.
At dawn of the following day, April 5, the Japanese Sycond and Fifth Flying Squadrons sent their bombers and fighters to attack Colombo, while the flagship Akagi apparently held her air group in reserve. The attackers encountered strong opposition over Colombo from the already air-borne defending fighter planes (a total of 33 Hurricanes and Fulmars) and from the alerted antiaircraft batteries; but they succeeded in inflicting considerable loss and damage, though at relatively high cost to themselves.
According to the carrier pilots' original reports (greatly exaggerated), at least 38 and possibly 47 British planes were destroyed, while five large and "more than ten" small freighters were badly damaged or set afire, as well as several hangars, a repair shop, and some government buildings and piers. Actual British aircraft losses amounted to sixteen fighters, two Catalinas, and six Swordfish—the last intercepted on passage from Trincomalee to Colombo. One of the large "freighters" hit was the 11,198-ton armed merchant cruiser Hector, under repair. So completely was she gutted by fires that she became a total loss. Also hit was the old destroyer Tenedos, which sank in the harbor, the 5,800-ton submarine depot ship Lucia, and the 5,943-ton merchantman Benledi, while serious damage was inflicted on harbor installations and lesser damage on railway workshops. These successes, according to British claims, cost the attackers at least 24 planes definitely shot down, plus seven "probables" and nine planes damaged. But Japanese versions (possibly incomplete) admit the loss of only seven planes: one fighter from the Soryu, one bomber from the Shokaku, and five bombers from the Zuikaku! None of the Hiryu's planes were lost, though nine received damage (again according to available Japanese records). The British claims are almost certainly much nearer the truth.
While the Colombo attack was at its height, about 0900, a striking force of ten Blenheim twin-engined light bombers took off to attack the Japanese Fleet, but they returned without having sighted it. Meanwhile, Admiral Somerville's old ships were steaming at their best speed to complete the planned concentration, Around noon, however, the cruisers Cornwall and Dorsetshire, proceeding from Colombo to a rendezvous at sea with Somerville's flag, were sighted in position 3° 01' N, 77° 58' E by several of the Tone's float planes, which promptly called for carrier bombers. An hour or so later some 40 of these arrived over the British cruisers and at once pushed home determined and skillful attacks. Within less than a half hour both cruisers had slid beneath the surface. According to a Japanese account, the Dorsetshire disappeared in thirteen minutes after receiving seventeen direct hits from 550-pound bombs. Loss of life fortunately was not heavy, and next day the greater part of both ships' companies were picked up by British destroyers.
The strong attack launched against the Cornwall and Dorsetshire, coming as it did after the Japanese had suffered heavy aircraft losses over Colombo, convinced Admiral Somerville that more than "two or three" enemy carriers were operating off Ceylon. This realization induced him to act prudently—in marked contrast to the almost reckless daring he had displayed earlier when, as Flag Officer Commanding Force "H" (based at Gibraltar), he had unhesitatingly sought action with superior Italian forces. But Admiral Somerville, standing on the Warspite’s bridge off Ceylon, knew that he was now confronting a very different adversary, and his decision to order a general withdrawal was the only sensible one under the circumstances. So the Eastern Fleet, in the rhetorical words of Prime Minister Winston Churchill, "withdrew into the wastes of the Indian Ocean" (Secret War Speech in the House of Commons, April 23, 1942). More accurately, Admiral Somerville's ships retired to the area between Ceylon and the Maldive Islands to the southwestward.
For the next three days the Akagi, Hiryu, Soryu, Shokaku, and Zuikaku, with their screening battleships, cruisers, and destroyers, milled about in the Indian Ocean, vainly trying to entice the Eastern Fleet to accept a decisive daylight battle, in which their air superiority could be used to advantage. But Admiral Somerville carefully avoided battle by day, meanwhile seeking an opportunity to launch night strikes with his carrier planes or to engage in a night surface action, in which latter case his superior gunnery strength (forty 15-inch guns against twenty-four 14-inch) would give him excellent prospects for victory. Unfortunately, no such opportunities developed.
Finally, on the morning of April 9, Admiral Nagumo ordered all his carriers to launch attacks against Trincomalee, the naval base on Ceylon's northeastern coast. These attacks, which apparently achieved some measure of surprise, inflicted considerable damage on the airfield, the naval dockyard, the 7,200-ton monitor Erebus, and the 7,958-ton S. S. Sabaing (set afire and beached, a total loss). Five British aircraft were shot down and eleven destroyed on the ground, compared with Japanese claims of 56 downed in combat and four destroyed on the ground! At least fourteen Japanese planes are believed to have been shot down.
While these attacks were in progress, one of the Haruna's reconnaissance float planes sighted and reported the old British carrier Hermes south of Trincomalee. Accompanied by the corvette H.M.S. Hollyhock and Australia's veteran destroyer Vampire, the Hermes (minus her aircraft) had left Trincomalee several days before in obedience to Admiral Somerville's orders; it was hoped that once at sea she would have a better chance of escaping destruction. But at 0645 the Hiryu launched an attack group of dive bombers, which at 0822 sighted the Hermes in position 7° 26' N, 81° 52' E, about 70 miles south of Trincomalee. Twenty-eight minutes later the Hermes rolled over and sank as a result of nine direct hits and two near-misses. The destroyer Vampire, victim of several direct hits and one damaging near-miss, also went down as did the corvette Hollyhock. Sunk in other attacks, nearer Trincomalee, were the 5,868-ton tanker British Sergeant and the 5,571-ton auxiliary fleet oiler Athelstane.
At the very moment that the Hermes was sinking, a force of nine R.A.F. Blenheims approached the Japanese Fleet, which first sighted them at 16,000 yards. Several minutes later the Japanese screening ships opened fire on the Blenheims, while the carriers launched additional fighter planes (including six from the Hiryu). The Blenheims failed to score a single hit, and at 0900 turned for home, followed by the Japanese fighters, which claimed shooting down six of them during a 25-minute pursuit (actually, five Blenheims were shot down). Japanese losses apparently totalled four planes, including the leader of the Hiryu's fighter unit, bringing their admitted losses for the day to eleven aircraft: five bombers and six fighters.
Four days later, to the immense relief of the British Admiralty, the Akagi and her four consorts, together with their supporting battleships and cruisers and destroyer screen, steamed through the Straits of Malacca, passed Singapore, entered the South China Sea, and then took a north-northeasterly course toward Bako, in the Pescadores.
Thus did the Imperial Navy conclude the "C" (Ceylon) Operation, which, had it been undertaken as support for a sea-borne invasion of India rather than as a mere raid-in-force, might well have altered the course of the war for many months and seriously delayed (though not changed) its final outcome. But Imperial Headquarters in Tokyo had long since formulated its war plans, and these did not contemplate waging an unlimited "global" war by coordinating Japan's strategy with that of Germany and Italy, whose African armies during most of 1942 offered a constant and serious threat to Alexandria, the Suez Canal, and the entire Middle East. Obsessed with the idea of a "limited" war, the objectives of which were the seizure, consolidation, and defense of the rich "Southern Resources Area" (Borneo, Malaya, Java, and Sumatra), the Japanese, though by no means unaware of the advantages to be obtained through close strategic cooperation with the European arm of the Axis, simply could not bring themselves to risk their precious and absolutely irreplaceable battle fleet in such distant waters as the Indian Ocean. Never again were any major Japanese warships to operate west of Singapore.
Accompanying Admiral Nagumo's force on the first leg of its homeward voyage through the South China Sea was the small carrier Ryujo, which on April 16 put in at Camranh Bay, on the Indo-China coast. With escorting cruisers and destroyers the Ryujo had arrived at Singapore on the 11th after completing a most successful anti-shipping sweep of the Bay of Bengal. This sweep, an integral part of the "C" Operation, resulted in the destruction or severe damaging by Ryujo's air group of nine ships totaling some 45,000 tons. Additional merchant shipping was sunk by surface units (cruisers Kumano, Mikuma, Mogami, Suzuya and destroyers Amagiri and Shirayuki), bringing Britain's total losses in the Bay of Bengal for the week to nearly 100,000 tons.
On the morning of April 18, while Colonel Doolittle's bombers were taking off from the Hornet on their historic Tokyo raid, Admiral Nagumo's force arrived off the Pescadores. Here the Fifth Flying Squadron was detached and ordered into Bako, while the Akagi, Hiryu, Soryu, and most of the supporting and screening units continued on toward Japan. They had been on their way only a few hours when orders came to search for the American carrier force which that morning had been reported by the picket boats stationed in northern waters. This fruitless search was abandoned at 2200 of April 20, when the ships were ordered to proceed to their home ports, the Akagi arriving at Kure on the 22nd.
Meanwhile, on the 20th, the Shokaku and Zuikaku had left Bako for Truk. They arrived there on April 25 and began final preparations for the "MO" (Moresby) Operation, which culminated in the Battle of the Coral Sea—a strategic defeat for the Imperial Navy and its first major setback. Sunk in this battle, with heavy loss of life, was the new light carrier Shoho (converted from a submarine tender), while the Shokaku almost capsized from her heavy damages and the Zuikaku received enough punishment to keep her out of action for several critical weeks.
Following her return to Kure the Akagi was taken in hand for routine repairs, her air group being sent to Kagoshima for continued training. Early in May the Commander in Chief Combined Fleet outlined to Admiral Nagumo his plans for the gigantic "MI" (Midway Island) Operation, upon which he had apparently determined immediately after the Doolittle raid. It seems that Admiral Yamamoto, never dreaming that the B-25's could have taken off from a carrier, reasoned that they had somehow managed to fly from Midway. Another equally important motive for launching the Midway Operation was the desire to force the U. S. Pacific Fleet into decisive action before it could be strengthened by new construction and the repair of damaged units.
Shortly after this conference Admiral Nagumo transferred his flag to the Kaga, which, as his only operational carrier, was constantly engaged in flight training exercises, sorely needed by the new pilots assigned as replacements for many of the seasoned veterans of Pearl Harbor and Ceylon. Later, upon the Akagi's arrival at Hashira anchorage, in Hiroshima Bay, Admiral Nagumo's flag was returned to her. The ships assigned to his command, now known as the "First Mobile Force," were the Akagi, Kaga, Hiryu, and Soryu, the battleships Haruna and Kirishima, the heavy cruisers Tone and Chikuma, and the newly formed Dai Juu Kuchiku Sentai (DesRon 10)—twelve destroyers led by the light cruiser Nagara. They began arriving at Hashira Shima in early May, but the entire force was not assembled there until a few days before the scheduled sortie.
Meanwhile four more carriers were being readied for the ambitious offensive. Two of them, the Hosho (Japan's oldest and smallest) and the Zuiho (sister ship of the ill-fated Shoho), were assigned to provide air cover for Yamamoto's "Main Body" of seven battleships—the modernized Fusos, Ises, and Nagatos, led by the huge fleet flagship Yamato. The remaining carriers (Ryujo and the recently commissioned Junyo) formed the nucleus of Rear Admiral Kakuji Kakuda's "Second Mobile Force," whose mission was to attack Dutch Harbor, partly to divert American attention from Midway and partly as support for landings in the Aleutians.
On May 22 the Ryujo, Kakuda's flagship, and the Junyo left Tokuyama for Ominato, arriving there on the 25th and sortieing next day for the "AL" (Aleutian) Operation. At 0600 of the 27th Admiral Nagumo departed from Hashira Shima and passed through the Bungo Channel with his four carriers and seventeen screening ships. Finally, on the 29th, the Hosho and Zuiho sortied from the Inland Sea with Yamamoto's battleships, screened by three light cruisers and twelve destroyers. Accompanying the Main Body the first two days of its voyage was Vice Admiral Kondo's Second Fleet, consisting of the battleships Kongo and Hiyei, several heavy cruisers, one light cruiser, and destroyers. On May 31 these ships left the Main Body (First Fleet) and headed for a scheduled rendezvous with the Landing Force (transports and escort) proceeding from Saipan.
After negotiating the defensive mine fields in Bungo Channel, the Akagi led the First Mobile Force toward the southeast (Course 128 degrees) at a speed of fourteen knots. Rigid radio silence was observed, while the twelve destroyers maintained a strict anti-submarine guard. Additional protection against submarine attack was provided by a patrol of four Type 97 attack (torpedo) planes, searching to a distance of 45,000 yards.
At dawn of May 28 the Mobile Force, then in position 28° 30' N, 137° 35' E, turned due east and at noon rendezvoused with the First Supply Group (five "Maru" oilers). At dusk the Akagi set the fleet course at 71 degrees, which was maintained with only minor variations until 1030 of June 3 (1330 of June 2 by American reckoning). Between May 31 and June 2 all ships refuelled from the five oilers, this task apparently being accomplished while underway at nine knots. Just as refueling had been completed, at about 1000 of June 2, visibility began to decrease, steadily deteriorating to the point where the ships became completely invisible from one another.
As the use of visual signals had become impossible in the prevailing visibility, radio silence was finally broken at 1030 of the 3rd, when Akagi ordered course changed to 125 degrees, thereby placing the Mobile Force almost on a direct course for Midway Island. At 1300, an hour after the destroyers started fueling again from the oilers, visibility began to improve somewhat, and in the afternoon visual signalling became possible once more. By midnight the fog had completely lifted, though scattered clouds remained overhead. At 0307 of June 4 the Supply Group was detached with destroyer Akigumo as escort, and the Mobile Force increased speed to twelve knots. At noon Admiral Nagumo called for double this speed and, in obedience to the Akagi's signal, the Mobile Force was soon steaming at 24 knots. Its task organization and cruising disposition at this time were as follows:
TASK ORGANIZATION
Air Attack Force: CarDiv 1: Akagi (FF), Kaga
CarDiv 2: Hiryu (F), Soryu
Supporting Force: CruDiv 8: Tone (F), Chikuma
BatDiv 3 (2nd Section): Haruna, Kirishima
(Note : BatDiv 3 under tactical command of ComCruDiv 8)
Screening Force: DesRon 10: Nagara (CL) (F)
DesDiv: 4: A rashi , Nowake, Hagikaze, Maikaze
DesDiv 10: Makigumo, Yugumo, Kazegumo
DesDiv 17: Urakaze, Isokaze, Tanikaze, Hamakaze
CRUISING DISPOSITION
At 1630 the Tone suddenly opened fire on what she mistook for about ten American planes, whereupon the Akagi promptly launched three fighters. They could find nothing, of course, and at 1654 returned to the carrier. Still jittery, the Akagi's lookouts twice reported, around midnight, brief sightings of American planes among the clouds.
At 0100 of June 5 (0400 of June 4 by American reckoning) the Mobile Force, then making 20 knots, went to General Quarters. Thirty minutes later the Akagi and the other carriers began launching their planes for the attack on Midway. The flagship sent out eighteen bombers and nine fighters, as did the Kaga, while each of the carriers in the Second Flying Squadron launched eighteen attack planes (torpedo planes armed with bombs) and nine fighters, making a total of 108 aircraft (36 VB, 36 VT, 36 VF).
Just after departure of this strike the Akagi and Kaga each launched a torpedo plane for reconnaissance, while five float planes were catapulted for the same purpose by three other ships: the Tone and Chikuma (two planes each) and Haruna (one plane). These seven aircraft had scarcely left on their important mission when the Mobile Force sighted "two or three" of our patrol bombers, which proceeded to maintain continuous contact.
Meanwhile, the Midway strike had also been sighted by one of our ubiquitous PBY's, which promptly alerted Midway's air and ground defenses. Thirty miles from their objective the Japanese attackers encountered Marine Corps fighter planes, but their overwhelming numbers enabled them to penetrate this defense, inflicting heavy losses on it, and to bomb Midway with considerable effect. Of the loss and damage inflicted, the Akagi's striking group was credited with shooting down nine fighters, probably shooting down two more, strafing a grounded B-17, and setting fire to three buildings on Eastern Island. Only six Japanese aircraft failed to return from this strike: three attack planes (level bombers), two fighters, and one dive bomber.
While the Midway holocaust was at its height, about 0400, the Mobile Force, then steaming on course 140 degrees at 28 knots, received its first attack from our aircraft: four B-26's (armed with torpedoes) and six Navy torpedo planes (Avengers). At 0407 the Akagi opened fire to starboard and four minutes later turned to head into the attack. Sixty seconds later she was maneuvering violently to avoid three torpedoes, one of which passed to starboard and the others to port. Between 0410 and 0417 the Akagi's anti-aircraft gunners must have shot down something, though their claim of "three twin-engined torpedo planes" is patently inaccurate, or at least exaggerated as to numbers, only two B-26's having failed to return from this attack. But the Akagi had not escaped entirely unscathed, for strafing had damaged her Number Three 4.7-inch anti-aircraft gun and seriously wounded two of its crew.
At 0415, just after these gallant but ineffective attacks had been repulsed, Admiral Nagumo received a radio report from the leader of the Midway strike that a second attack on the island would be necessary. Orders were therefore issued to rearm with bombs the 45 torpedo planes which the Akagi and Kaga had held in readiness. This work was being feverishly pressed when, at 0456, the Mobile Force was subjected to a furious attack by U. S. Marine Corps dive bombers. This attack, made in two waves, lasted a half hour, during which bombs fell harmlessly about the Haruna and Kaga, though at 0508 the Hiryu received some damage from four near-misses, which killed four men and wounded many others. Japanese sources fail to confirm the reputed suicide crash of Major Lofton Henderson's plane into a carrier, but they have stated that at 0512 one dive bomber, apparently hit by A. A. fire from the Hiryu, crashed into the sea close aboard the ship and near her island superstructure (port side). At 0535, five minutes after the Marine bombing attack ended, sixteen Army B-17's appeared, flew over the Mobile Force, and dropped their bombs without scoring so much as a single hit or damaging near-miss.
About the time that the Marine dive bombers began their attack, one of the Tone's float planes, scouting to the northeast, reported having sighted at 0428 some ten American warships 240 miles north of Midway. At 0520 this plane, in reply to the Akagi's order to "Advise ship types," reported that a carrier (obviously the Yorktown) appeared to be in company with the group. This report, received aboard the Akagi at 0530, was the first definite knowledge the Japanese had of the presence of American carriers.
After considering the new situation for some minutes, Admiral Nagumo at 0555 sent the following radio dispatch to Admiral Yamamoto: "Enemy composed of one carrier, five cruisers, and five destroyers sighted at 0500 in position bearing 10 degrees, distance 240 miles from Midway. We are heading for it." Simultaneously, he had the Akagi inform the Mobile Force by blinker that "After taking on the returning planes, we shall proceed north to contact and destroy the enemy task force."
At 0559 the last of the Midway dive bombers returned to the Akagi and Kaga, seven minutes later the twelve remaining fighters landed on the four carriers, while by 0618 the Hiryu and Soryu had taken aboard the last of their attack planes. At 0617, therefore, the Akagi turned to the northeast (course 70 degrees) and called for maximum battle speed. Within a few minutes the Mobile Force had worked up to 30 knots (most interesting in view of the fact that the Kaga's original rated speed, as given by the Japanese before the war, was only 23 knots, while the Akagi's was 28.5 knots, and that of the two battleships only 26 knots).
The turn toward the northeast had barely been completed when the Chikuma sighted fifteen hostile planes ( the Hornet's VT 8) to starboard, 35,000 yards distant and coming in low. At 0619, the Akagi began evasive action and soon all ships were twisting violently, meanwhile firing furiously with their anti-aircraft and machine guns to supplement the defense being put up by the fighter planes of the combat air patrol. This aerial defense was most effective and succeeded in bringing down all fifteen planes, many of them before they could launch their torpedoes.
Following this attack there was a lull of about fifteen minutes, which the Akagi and the other carriers utilized in feverish efforts to complete preparations for launching a large-scale strike against the Yorktown. A total of 93 planes (36 VB, 45 VT, 12 VF) were to participate in this attack, of which total the Akagi was to provide eighteen torpedo planes and three fighters. At 0640, while these preparations were still incomplete, more American torpedo planes appeared, and at 0702 still more (a total of 26 VT-3 and VT-6 from the Yorktown and Enterprise). Despite its fighter escort, this torpedo attack also encountered effective resistance from the Japanese combat air patrol, which brought down about twenty of the torpedo planes. Again, no hits were scored, though the Kaga at 0658 had a close call.
Although the four Japanese carriers were still undamaged, they had been thrown into some confusion by these last torpedo attacks, delaying their preparations for launching the planned strike against the Yorktown, while the combat air patrol had not only taken serious losses from our fighters with the torpedo squadrons, but its attention had been so occupied that it was not in position to intercept another and different kind of strike which had been developing and was now to burst with sudden fury. At about 0725 the dive bombing squadrons of the Enterprise and Hornet roared down to attack the Mobile Force.
In five hectic minutes the tide of battle turned decisively. Despite violent evasive tactics, the flagship Akagi was hit by two bombs at about 0727, the Soryu received three hits, and the Kaga took four hits and, like the other carriers, burst into flames. Only the Hiryu escaped unscathed through this tempest. The crisis at Midway was over.
One of the two bombs which struck the Akagi hit just behind her midships elevator, and the other farther aft, on the port side of the flight deck. Neither hit in itself was fatal; but as the Akagi was then engaged in rearming and refueling her planes for the strike against the Yorktown, the fires started by the second hit spread rapidly throughout the hangar and set off violent explosions among the crowded, partially armed planes. At 0729 some of the torpedoes stored in the hangar exploded, whereupon orders were given to flood the ammunition and bomb storage rooms. The forward groups were promptly flooded, but valve damages in the after sections prevented their being flooded for over two hours.
At 0742, just as the Akagi stopped her engines temporarily because of damage to them and to her steering gear, all hands were ordered to fire-fighting stations. The pump system, however, had been damaged, so there was little that could be done to check the fires. These, their intensity steadily mounting, gradually had moved forward until they were raging near the bridge. The only guns remaining in action by this time were the two foremost machine-gun groups and Number One anti-aircraft gun (4.7-inch).
At 0743 the flames set fire to a fighter plane near the bridge and then spread to the bridge itself. Realizing that his flagship was crippled, if not doomed, Admiral Nagumo decided to transfer his flag to the light cruiser Nagara, flagship of DesRon 10. The destroyer Nowake, therefore, was ordered to come alongside, and at 0746 Admiral Nagumo and his staff abandoned the Akagi's bridge and prepared to board the destroyer. While this transfer was in progress the undamaged Hiryu, flying the flag of Rear Admiral Tamon Yamaguchi, ComCarDiv 2, launched her first attack against the Yorktown: eighteen dive bombers escorted by five or six fighters.
At 0830 Admiral Nagumo boarded the Nagara from the Nowake and promptly sent two radio dispatches, one to Admiral Yamamoto and one to the Mobile Force. The first advised the Commander in Chief Combined Fleet of the crippling damage to the three carriers, of Nagumo's transfer to the Nagara, and of his plan to seek a decisive surface engagement. The second dispatch ordered the Mobile Force to assemble for the attack, forming in order of DesRon 10, CruDiv 8, and BatDiv 3 on course 170, speed 12 knots. A quarter of an hour later, after having ordered the Nowake to return to the assistance of his erstwhile flagship, Admiral Nagumo formally hoisted his flag in the Nagara.
Meanwhile, the Akagi's fires were burning more fiercely than ever, and at 0820 Captain Taijiro Aoki and his officers had to leave the bridge and move to the forward flight deck. Ten minutes later the Akagi's air personnel and wounded were ordered transferred to the destroyers Arashi, standing by, and the Nowake, returning from the Nagara. At 0835 the Akagi was shaken by fresh explosions in her torpedo and bomb storage rooms, after which the fires crept so far forward that the captain had to leave the flight deck for the safety of the forward anchor deck. Here, at 0850, the chief engineer arrived to report on the condition of the ship's engines. A few minutes later the Akagi suddenly came to life and began turning to starboard, whereupon an ensign managed to contact the engine room, only to learn that most of its personnel had been killed. At 0930 Captain Aoki had the Nowake radio this message to Admiral Nagumo: "All safe except on flight deck. Every effort being made to fight fires."
But these fire-fighting efforts were of no avail, and the flames continued to devour the once proud carrier. At 1038, therefore, His Imperial Majesty's portrait was transferred to the Nowake, which shortly thereafter reported: "Fires still raging in Akagi. The Emperor's portrait has been safely brought aboard this ship." At 1050 the Akagi came to a stop, her engines at last completely finished. An hour later communication with the after section of the ship was temporarily restored, but at noon an induced explosion in the Akagi's hangar destroyed the forward hangar bulkheads and started fresh fires.
At 1208 the Nowake received a radio message from Admiral Yamaguchi in the Hiryu. It read, "Please relay the following to Akagi: If any of your planes can take off, have them transfer to Hiryu."
Far from being able to fly off any planes, the Akagi was then engaged in transferring her air personnel to the destroyers, which transfer she completed at 1300. Two hours later the Arashi and Nowake, still standing by, thought they detected the presence of a submarine, but nothing came of this supposed contact. At 1520 some men attempted to go below to determine the condition of the engines, but fumes and heat prevented their carrying out this mission; and at 1615 the chief engineer reported to Captain Aoki that there was no possibility of the Akagi's steaming under her own power.
Realizing at last that his ship could not be saved, Captain Aoki decided to order "Abandon Ship," and advised Admiral Nagumo to that effect, at the same time requesting permission to have a destroyer sink the Akagi with torpedoes. Five minutes later the 700 officers and men still on board were ordered to assemble to hear the abandon ship order, and at 1700 all hands began transferring to the destroyers, 500 to the Arashi and 200 to the Nowake.
The other carriers damaged in the morning attack, the Kaga and Soryu, had meanwhile been experiencing even more serious difficulties. The latter, hit by three bombs between 0725 and 0728, promptly burst into flames from stem to stern. At 0740 both engines stopped and five minutes later Captain Ryusaku Yanagimoto gave the "Abandon Ship" order. While the officers and men were gathering on deck a terrific explosion occurred, blowing many of them overboard. The transfer of survivors to the destroyers Hamakaze and Isokaze was completed about 1600, at which time the flames died down somewhat. A fire-fighting party was accordingly organized to reboard the ship, but at 1613 she was torpedoed by a lurking submarine (the U. S. S. Nautilus) and plunged to the bottom, taking with her Captain Yanagimoto, last seen on the bridge, where he could be heard shouting "Banzai, banzai, banzai!" Of the Soryu's complement of some 1,400 officers and men, approximately half (718) perished with her.
The big Kaga, hit by four bombs, one of which destroyed the bridge and killed all its occupants (including Captain Okada), quickly became a blazing, unmanageable hulk. Attempts to put out the fires were completely unavailing, and as there seemed little possibility of saving the ship, the Emperor's portrait was transferred at 1025 to the destroyer Hagikaze. Thirty-five minutes later the Kaga was hit by a submarine's torpedo, but it failed to detonate. By 1340 the situation had become hopeless and the approximately 1,000 survivors began transferring to the Hagikaze and Maikaze. At 1625, just as the Akagi a few miles to the northeast was preparing to abandon ship, the Kaga's fires reached the fuel tanks, fore and aft, causing two tremendous explosions which completely destroyed the ship. Her dead totalled some 800 officers and men.
Meanwhile the Hiryu, undamaged in the morning attack, had launched two effective strikes against the Yorktown, the first at 0758 and the second at 0906. Sixteen aircraft participated in the second attack: ten torpedo planes and six fighters, one of the former belonging to the Akagi's air group and two of the latter to the Kaga's. This final, desperate strike, pushed home with great determination, obtained two torpedo hits on the Yorktown, already badly hurt by the earlier dive bombing attack.
About two hours later the Hiryu herself was furiously attacked by dive bombers from the Enterprise and Hornet, which at 1403 scored four direct hits and two damaging near misses. Fierce fires broke out at once, but the Hiryu continued steaming at high speed until 1803, when she finally stopped to permit the Chikuma to assist her in firefighting work.
After several hours it appeared that the Hiryu's fires might be brought under control, but at 2058 an induced explosion rekindled the flames. It gradually became evident that nothing could save the ship, and at 2330 all hands were ordered to prepare to abandon ship. Twenty minutes later Admiral Yamaguchi and Captain Tomeo Kaki delivered stirring addresses to the crew, after which, amid thunderous "Banzais," the battle flag and command flag were ceremoniously lowered. At 0015 of June 6 (0315 of June 5 by American reckoning) "Abandon Ship" was ordered, the Emperor's portrait was removed, and the transfer of personnel to destroyers begun.
Despite the effective loss of three carriers that morning, followed by the crippling of the Hiryu in the early afternoon, Admiral Yamamoto did not at once decide to abandon the Midway Operation. On the contrary, he was determined to push on even though his Combined Fleet had now lost control of the air. But he apparently did not regard this control as irretrievably lost, for he still had the Hosho and Zuiho with his Main Body, while far to the northward were the Ryujo and Junyo, comprising Admiral Kakuda's Second Mobile Force, which that afternoon attacked Dutch Harbor for the second consecutive day. At 0920 Admiral Yamamoto actually ordered this distant force to rendezvous as soon as possible with the remnants of the First Mobile Force.
Until shortly before midnight the flagship Yamato's radio transmitter was busy sending out orders directing the First Mobile Force and Vice Admiral Kondo's Second Fleet to continue the operation and prepare for decisive surface action. At 2355, however, after protracted discussions with his staff officers, headed by Rear Admiral Matome Ugaki, the Commander in Chief Combined Fleet reluctantly cancelled, by radio dispatch, the occupation of Midway Island and ordered the First Mobile Force and the Second Fleet to rendezvous with his Main Body (First Fleet) next morning, while the Landing Force (transports and escort) was to retire westward out of Midway's air range.
While the staff discussions aboard the Yamato were at their height, the end was rapidly approaching for the stricken Akagi and Hiryu. At 1925 Admiral Yamamoto radioed the Arashi and Nowake, standing by the Akagi, to "Delay disposition." At midnight, however, ComDesDiv 4, aboard the Arashi, reported that "She (Akagi) is still burning. There is danger of her sinking." The destroyers continued to stand by until 0150, when the Commander in Chief ordered: "Dispose." Ten minutes later the Akagi, having been torpedoed by the Arashi, slid beneath the surface; her position then was 30° 30' N, 178° 40' W. Eight officers and 213 men, out of a complement of some 1,800, had perished. Among the survivors was Captain Aoki, who retired from active service following a brief period as Commanding Officer of the Kure Naval Arsenal.
A half hour before the Akagi went down, the Hiryu's personnel completed their transfer to the destroyers Kazegumo and Makigumo. Two men, however, remained aboard the blazing ship—Admiral Yamaguchi and Captain Kaki. They were last seen waving their caps in farewell to the survivors aboard the destroyers. At 0210 the Hiryu was disposed of by a single torpedo from the Makigumo, going down some 60 miles north and west of the Akagi's grave. Her dead totaled 29 officers and 387 men.
The destruction of the Akagi and the other carriers was a terrible blow to the Teikoku Kaigun—a blow from which it never fully recovered. Reckoned on a tonnage basis they represented 43 per cent of Japan's total carrier strength at that time; on the basis of all-round fighting value they represented somewhat more—perhaps a full 50 per cent. Most important of all, however, the loss of these four veteran carriers meant that the Imperial Navy could no longer launch ambitious offensive operations, but would have to adopt a defensive or, at the very best, a cautious, limited offensive strategy, relying primarily for its air cover and support on land-based planes rather than on highly mobile carrier-borne aircraft.
An associate member of the Naval Institute since 1929, Mr. Robinson has had more than 200 articles published in naval magazines in the United States and England, including nine previous articles in the Proceedings. For the last five years he has been the Foreign Naval News Editor of Our Navy Magazine.