Pearl Harbor

The Japanese Naval attack on Pearl Harbor 7th December 1941

The attack on Pearl Harbor (called Hawaii Operation or Operation AI[9][10] by the Japanese Imperial General Headquarters (Operation Z in planning)[11] and the Battle of Pearl Harbor[12]) was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941 (December 8 in Japan). From the standpoint of the defenders, the attack commenced at 7:48 a.m. Hawaiian Time.[13] The attack was intended as a preventive action in order to keep the U.S. Pacific Fleet from interfering with military actions the Empire of Japan was planning in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States. The base was attacked by 353[14] Japanese fighters, bombers and torpedo planes in two waves, launched from six aircraft carriers.[14] All eight U.S. Navy battleships were damaged, with four being sunk. Two of these were later raised, and with the remaining four repaired, six battleships returned to service later in the war. The Japanese also sank or damaged three cruisers, three destroyers, an anti-aircraft training ship,[N4] and one minelayer. 188 U.S. aircraft were destroyed; 2,402 Americans were killed[16] and 1,282 wounded. Important base installations such as the power station, shipyard, maintenance, and fuel and torpedo storage facilities, as well as the submarine piers and headquarters building (also home of the intelligence section) were not attacked. Japanese losses were light: 29 aircraft and five midget submarines lost, and 65 servicemen killed or wounded. One Japanese sailor was captured.

The attack came as a profound shock to the American people and led directly to the American entry into World War II in both the Pacific and European theaters. The following day (December 8), the United States declared war on Japan. Domestic support for non-interventionism, which had been strong,[17] disappeared. Clandestine support of Britain (for example the Neutrality Patrol) was replaced by active alliance. Subsequent operations by the U.S. prompted Germany and Italy to declare war on the U.S. on December 11, which was reciprocated by the U.S. the same day.

There were numerous historical precedents for unannounced military action by Japan. However, the lack of any formal warning, particularly while negotiations were still apparently ongoing, led President Franklin D. Roosevelt to proclaim December 7, 1941, 'a date which will live in infamy'.

Anticipating war

The attack on Pearl Harbor was intended to neutralize the U.S. Pacific Fleet, and hence protect Japan's advance into Malaya and the Dutch East Indies, where it sought access to natural resources such as oil and rubber.[3] War between Japan and the United States had been a possibility of which each nation had been aware (and developed contingency plans for) since the 1920s, though tensions did not begin to grow seriously until Japan's 1931 invasion of Manchuria. Over the next decade, Japan continued to expand into China, leading to all-out war between those countries in 1937. Japan spent considerable effort trying to isolate China and achieve sufficient resource independence to attain victory on the mainland; the 'Southern Operation' was designed to assist these efforts.[18]

From December 1937, events such as the Japanese attack on the USS Panay and the Nanking Massacre (more than 200,000 killed in indiscriminate massacres) swung public opinion in the West sharply against Japan and increased Western fear of Japanese expansion,[19] which prompted the United States, the United Kingdom, and France to provide loan assistance for war supply contracts to the Republic of China.

In 1940, Japan invaded French Indochina in an effort to control supplies reaching China. The United States halted shipments of airplanes, parts, machine tools, and aviation gasoline to Japan; this was perceived by Japan as an unfriendly act.[N5] The U.S. did not stop oil exports to Japan at that time in part because prevailing sentiment in Washington was that such an action would be an extreme step, given Japanese dependence on U.S. oil,[21][22] and likely to be considered a provocation by Japan.

Early in 1941, President Franklin D. Roosevelt moved the Pacific Fleet to Hawaii from its previous base in San Diego and ordered a military buildup in the Philippines in the hope of discouraging Japanese aggression in the Far East. Because the Japanese high command was (mistakenly) certain any attack on Britain's Southeast Asian colonies would bring the U.S. into the war, a devastating preventive strike appeared to be the only way to avoid U.S. naval interference.[23] An invasion of the Philippines was also considered to be necessary by Japanese war planners. The U.S. War Plan Orange had envisioned defending the Philippines with a 40,000 man elite force. This was opposed by Douglas MacArthur, who felt that he would need a force ten times that size, and was never implemented.[24] By 1941, U.S. planners anticipated abandonment of the Philippines at the outbreak of war and orders to that effect were given in late 1941 to Admiral Thomas Hart, commander of the Asiatic Fleet.[25]

The U.S. ceased oil exports to Japan in July 1941, following Japanese expansion into French Indochina after the fall of France, in part because of new American restrictions on domestic oil consumption.[26] This in turn caused the Japanese to proceed with plans to take the Dutch East Indies, an oil-rich territory.[N6] The Japanese were faced with the option of either withdrawing from China and losing face or seizing and securing new sources of raw materials in the resource-rich, European-controlled colonies of South East Asia.

Preliminary planning for an attack on Pearl Harbor to protect the move into the 'Southern Resource Area' (the Japanese term for the Dutch East Indies and Southeast Asia generally) had begun very early in 1941 under the auspices of Admiral Isoroku Yamamoto, then commanding Japan's Combined Fleet.[28] He won assent to formal planning and training for an attack from the Imperial Japanese Navy General Staff only after much contention with Naval Headquarters, including a threat to resign his command.[29] Full-scale planning was underway by early spring 1941, primarily by Captain Minoru Genda and Deputy Chief of Staff, Captain Kameto Kurojima.[30] Japanese planning staff studied the 1940 British air attack on the Italian fleet at Taranto intensively. It was of great use to them when planning their attack on U.S. naval forces in Pearl Harbor.[N7][N8]

Over the next several months, pilots trained, equipment was adapted, and intelligence collected. Despite these preparations, the attack plan was not approved by Emperor Hirohito until November 5, after the third of four Imperial Conferences called to consider the matter.[33] Final authorization was not given by the emperor until December 1, after a majority of Japanese leaders advised him the 'Hull Note' would 'destroy the fruits of the China incident, endanger Manchukuo and undermine Japanese control of Korea.'[34]

By late 1941, many observers believed that hostilities between the U.S. and Japan were imminent. A Gallup poll just before the attack on Pearl Harbor found that 52% of Americans expected war with Japan, 27% did not expect war, and 21% had no opinion.[35] While U.S. Pacific bases and facilities had been placed on alert on multiple occasions, U.S. officials doubted Pearl Harbor would be the first target. They expected the Philippines to be attacked first. This presumption was due to the threat that the air bases throughout the country and the naval base at Manila posed to sea lanes, as well as the shipment of supplies to Japan from territory to the south.[36] They also incorrectly believed that Japan was not capable of mounting more than one major naval operation at a time.[37]


The attack had several major aims. First, it intended to destroy important American fleet units, thereby preventing the Pacific Fleet from interfering with Japanese conquest of the Dutch East Indies and Malaya. Second, it was hoped to buy time for Japan to consolidate its position and increase its naval strength before shipbuilding authorized by the 1940 Vinson-Walsh Act erased any chance of victory.[38][39] Finally, it was meant to deliver a severe blow to American morale, one which would discourage Americans from committing to a war extending into the western Pacific Ocean and Dutch East Indies. To maximize the effect on morale, battleships were chosen as the main targets, since they were the prestige ships of any navy at the time. The overall intention was to enable Japan to conquer Southeast Asia without interference.[38]

Striking the Pacific Fleet at anchor in Pearl Harbor carried two distinct disadvantages: the targeted ships would be in very shallow water, so it would be relatively easy to salvage and possibly repair them; and most of the crews would survive the attack, since many would be on shore leave or would be rescued from the harbor. A further important disadvantage—this of timing, and known to the Japanese—was the absence from Pearl Harbor of all three of the U.S. Pacific Fleet's aircraft carriers (Enterprise, Lexington, and Saratoga). Ironically, the IJN top command was so imbued with Admiral Mahan's 'decisive battle' doctrine—especially that of destroying the maximum number of battleships—that, despite these concerns, Yamamoto decided to press ahead.

Japanese confidence in their ability to achieve a short, victorious war also meant other targets in the harbor, especially the navy yard, oil tank farms, and submarine base, could safely be ignored, since—by their thinking—the war would be over before the influence of these facilities would be felt.[40]

Approach and attack

On November 26, 1941, a Japanese task force (the Striking Force) of six aircraft carriers (Akagi, Kaga, Sōryū, Hiryū, Shōkaku, and Zuikaku) departed northern Japan en route to a position northwest of Hawaii, intending to launch its aircraft to attack Pearl Harbor. In all, 408 aircraft were intended to be used: 360 for the two attack waves, 48 on defensive combat air patrol (CAP), including nine fighters from the first wave.

The first wave was to be the primary attack, while the second wave was to finish whatever tasks remained. The first wave contained the bulk of the weapons to attack capital ships, mainly specially adapted Type 91 aerial torpedoes which were designed with an anti-roll mechanism and a rudder extension that let them operate in shallow water.[41] The aircrews were ordered to select the highest value targets (battleships and aircraft carriers) or, if these were not present, any other high value ships (cruisers and destroyers). Dive bombers were to attack ground targets. Fighters were ordered to strafe and destroy as many parked aircraft as possible to ensure they did not get into the air to counterattack the bombers, especially in the first wave. When the fighters' fuel got low they were to refuel at the aircraft carriers and return to combat. Fighters were to serve CAP duties where needed, especially over US airfields.

Before the attack commenced, two reconnaissance aircraft launched from cruisers were sent to scout over Oahu and report on enemy fleet composition and location. Another four scout planes patrolled the area between the Japanese carrier force (the Kido Butai) and Niihau, in order to prevent the task force from being caught by a surprise counterattack.[42]


Fleet submarines I-16, I-18, I-20, I-22, and I-24 each embarked a Type A midget submarine for transport to the waters off Oahu.[43] The five I-boats left Kure Naval District on November 25, 1941,[44] coming to 10 nautical miles (19 km; 12 mi) off the harbor mouth[45] and launched their charges at about 01:00 on December 7.[46] At 03:42[47] Hawaiian Time, the minesweeper Condor spotted a midget submarine periscope southwest of the Pearl Harbor entrance buoy and alerted the destroyer Ward.[48] The midget may have entered Pearl Harbor. However, Ward sank another midget submarine at 06:37[48][N9] in the first American shots in the Pacific Theater. A midget submarine on the north side of Ford Island missed the seaplane tender Curtiss with her first torpedo and missed the attacking destroyer Monaghan with her other one before being sunk by Monaghan at 08:43.[48]

A third midget submarine grounded twice, once outside the harbor entrance and again on the east side of Oahu, where it was captured on December 8.[50] Ensign Kazuo Sakamaki swam ashore and was captured, becoming the first Japanese prisoner of war.[N10] A fourth had been damaged by a depth charge attack and was abandoned by its crew before it could fire its torpedoes.[51] A United States Naval Institute analysis of photographs from the attack, conducted in 1999, indicated a midget submarine may have successfully fired a torpedo into West Virginia. Japanese forces received a radio message from a midget submarine at 00:41 December 8 claiming damage to one or more large war vessels inside Pearl Harbor.[52] The submarine's final disposition is unknown,[53] but she did not return to her 'mother' sub.[54] On December 7, 2009, the Los Angeles Times reported there is circumstantial evidence three pieces of a submarine discovered 3 mi (2.6 nmi; 4.8 km) south of Pearl Harbor between 1994 and 2001 could be the missing submarine. It also reported there is strong circumstantial evidence the submarine fired two torpedoes at Battleship Row. The debris was dumped outside the harbor as part of an effort to conceal the West Loch Disaster, a 1944 ammunition explosion that destroyed six tank landing ships preparing for Operation Forager.[55]

Japanese declaration of war

The attack took place before any formal declaration of war was made by Japan, but this was not Admiral Yamamoto's intention. He originally stipulated that the attack should not commence until thirty minutes after Japan had informed the United States that peace negotiations were at an end.[56][57] The Japanese tried to uphold the conventions of war while still achieving surprise, but the attack began before the notice could be delivered. Tokyo transmitted the 5,000-word notification (commonly called the '14-Part Message') in two blocks to the Japanese Embassy in Washington, but transcribing the message took too long for the Japanese ambassador to deliver it in time. (In fact, U.S. code breakers had already deciphered and translated most of the message hours before he was scheduled to deliver it.)[58] The final part of the '14 Part Message' is sometimes described as a declaration of war. While it neither declared war nor severed diplomatic relations, it was viewed by a number of senior U.S government and military officials as a very strong indicator that negotiations were likely to be terminated [59] and that war might break out at any moment.[60] A declaration of war was printed on the front page of Japan's newspapers in the evening edition of December 8,[61] but not delivered to the U.S. government until the day after the attack.

For decades, conventional wisdom held that Japan attacked without any official warning of a break in relations only because of accidents and bumbling that delayed the delivery of a document hinting at war to Washington. In 1999, however, Takeo Iguchi, a professor of law and international relations at International Christian University in Tokyo, discovered documents that pointed to a vigorous debate inside the government over how, and indeed whether, to notify Washington of Japan's intention to break off negotiations and start a war, including a December 7 entry in the war diary saying, 'our deceptive diplomacy is steadily proceeding toward success.' Of this, Iguchi said, 'The diary shows that the army and navy did not want to give any proper declaration of war, or indeed prior notice even of the termination of negotiations ... and they clearly prevailed.'[62]

First wave composition

The first attack wave of 183 planes was launched north of Oahu, led by Commander Mitsuo Fuchida.[63] It included:[N11] 1st Group (targets: battleships and aircraft carriers)[65] 50 Nakajima B5N Kate bombers armed with 800 kg (1760 lb) armor piercing bombs, organized in four sections 40 B5N bombers armed with Type 91 torpedoes, also in four sections 2nd Group - (targets: Ford Island and Wheeler Field) 54 Aichi D3A Val dive bombers armed with 550 lb (249 kg) general purpose bombs 3rd Group - (targets: aircraft at Ford Island, Hickam Field, Wheeler Field, Barber's Point, Kaneohe) 45 Mitsubishi A6M Zeke fighters for air control and strafing[64] Six planes failed to launch due to technical difficulties.[42] As the first wave approached Oahu, a U.S. Army SCR-270 radar at Opana Point near the island's northern tip (a post not yet operational, but in training mode for months) detected it and called in a warning. Although it had been in use in a training mode by the U.S Army Hawaiian Department for some time, it was not fully operational.[66]

Although the operators, Privates George Elliot Jr. and Joseph Lockard,[67] reported a target, a newly assigned officer at the thinly manned Intercept Center, Lieutenant Kermit A. Tyler, presumed it was the scheduled arrival of six B-17 bombers. The direction from which the aircraft were coming was close (only a few degrees separated the two inbound courses),[68] while the operators had never seen a formation as large on radar;[69] they neglected to tell Tyler of its size,[70] while Tyler, for security reasons, could not tell them the B-17s were due[70] (even though it was widely known).[70]

Several U.S. aircraft were shot down as the first wave approached land, and one at least radioed a somewhat incoherent warning. Other warnings from ships off the harbor entrance were still being processed or awaiting confirmation when the attacking planes began bombing and strafing. Nevertheless, it is not clear any warnings would have had much effect even if they had been interpreted correctly and much more promptly. The results the Japanese achieved in the Philippines were essentially the same as at Pearl Harbor, though MacArthur had almost nine hours warning that the Japanese had already attacked at Pearl.

The air portion of the attack on Pearl Harbor began at 7:48 a.m. Hawaiian Time[13] (3:18 a.m. December 8 Japanese Standard Time, as kept by ships of the Kido Butai),[71][N12] with the attack on Kaneohe. A total of 353[14] Japanese planes in two waves reached Oahu. Slow, vulnerable torpedo bombers led the first wave, exploiting the first moments of surprise to attack the most important ships present (the battleships), while dive bombers attacked U.S. air bases across Oahu, starting with Hickam Field, the largest, and Wheeler Field, the main U.S. Army Air Force fighter base. The 171 planes in the second wave attacked the Air Corps' Bellows Field near Kaneohe on the windward side of the island, and Ford Island. The only aerial opposition came from a handful of P-36 Hawks, P-40 Warhawks and some SBD Dauntless dive bombers from the carrier USS Enterprise.[N13] Men aboard U.S. ships awoke to the sounds of alarms, bombs exploding, and gunfire, prompting bleary-eyed men to dress as they ran to General Quarters stations. (The famous message, 'Air raid Pearl Harbor. This is not drill.',[N14] was sent from the headquarters of Patrol Wing Two, the first senior Hawaiian command to respond.) The defenders were very unprepared. Ammunition lockers were locked, aircraft parked wingtip to wingtip in the open to deter sabotage,[72] guns unmanned (none of the Navy's 5'/38s, only a quarter of its machine guns, and only four of 31 Army batteries got in action).[72] Despite this low alert status, many American military personnel responded effectively during the battle.[N15] Ensign Joe Taussig, Jr., the only commissioned officer aboard USS Nevada, got the ship underway during the attack but lost a leg. The ship was beached in the harbor by the Senior Quartermaster.[73] One of the destroyers, USS Aylwin, got underway with only four officers aboard, all ensigns, none with more than a year's sea duty; she operated at sea for 36 hours before her commanding officer managed to get back aboard.[74] Captain Mervyn Bennion, commanding USS West Virginia, led his men until he was cut down by fragments from a bomb which hit USS Tennessee, moored alongside.

Second wave composition

The second wave consisted of 171 planes: 54 B5Ns, 81 D3As, and 36 A6Ms, commanded by Lieutenant-Commander Shigekazu Shimazaki.[64] Four planes failed to launch because of technical difficulties.[42] This wave and its targets comprised:[64]

1st Group - 54 B5Ns armed with 550 lb (249 kg) and 132 lb (60 kg) general purpose bombs[65] 27 B5Ns - aircraft and hangars on Kaneohe, Ford Island, and Barbers Point 27 B5Ns - hangars and aircraft on Hickam Field 2nd Group (targets: aircraft carriers and cruisers) 81 D3As armed with 550 lb (249 kg) general purpose bombs, in four sections 3rd Group - (targets: aircraft at Ford Island, Hickam Field, Wheeler Field, Barber's Point, Kaneohe) 36 A6Ms for defense and strafing The second wave was divided into three groups. One was tasked to attack Kāneʻohe, the rest Pearl Harbor proper. The separate sections arrived at the attack point almost simultaneously from several directions.

American casualties and damages

Ninety minutes after it began, the attack was over. 2,386 Americans died (48 - 68 were civilians, most killed by unexploded American anti-aircraft shells landing in civilian areas), a further 1,139 wounded. Eighteen ships were sunk or run aground, including five battleships.[N16][5]

Of the American fatalities, nearly half of the total (1,177) were due to the explosion of Arizona's forward magazine after it was hit by a modified 40 cm (16 in.) shell.[N17]

Already damaged by a torpedo and on fire amidships, Nevada attempted to exit the harbor. She was targeted by many Japanese bombers as she got under way and sustained more hits from 250 lb (113 kg) bombs, which started further fires. She was deliberately beached to avoid blocking the harbor entrance.

California was hit by two bombs and two torpedoes. The crew might have kept her afloat, but were ordered to abandon ship just as they were raising power for the pumps. Burning oil from Arizona and West Virginia drifted down on her, and probably made the situation look worse than it was. The disarmed target ship Utah was holed twice by torpedoes. West Virginia was hit by seven torpedoes, the seventh tearing away her rudder. Oklahoma was hit by four torpedoes, the last two above her belt armor, which caused her to capsize. Maryland was hit by two of the converted 40 cm shells, but neither caused serious damage.

Although the Japanese concentrated on battleships (the largest vessels present), they did not ignore other targets. The light cruiser Helena was torpedoed, and the concussion from the blast capsized the neighboring minelayer Oglala. Two destroyers in dry dock, Cassin and Downes were destroyed when bombs penetrated their fuel bunkers. The leaking fuel caught fire; flooding the dry dock in an effort to fight fire made the burning oil rise, and both were burned out. Cassin slipped from her keel blocks and rolled against Downes. The light cruiser Raleigh was holed by a torpedo. The light cruiser Honolulu was damaged but remained in service. The repair vessel Vestal, moored alongside Arizona, was heavily damaged and beached. The seaplane tender Curtiss was also damaged. The destroyer Shaw was badly damaged when two bombs penetrated her forward magazine.[75]

Of the 402[14] American aircraft in Hawaii, 188 were destroyed and 159 damaged,[14] 155 of them on the ground. Almost none was actually ready to take off to defend the base. Eight Army Air Corps pilots managed to get airborne during the battle[76] and six were credited with downing at least one Japanese aircraft during the attack, 1st Lt. Lewis M. Sanders, 2nd Lt. Philip M. Rasmussen, 2nd Lt. Kenneth M. Taylor, 2nd Lt. George S. Welch, 2nd Lt. Harry W. Brown, and 2nd Lt. Gordon H. Sterling Jr. Sterling was shot down by Lt. Fujita over Kaneohe Bay and is listed as BNR (not MIA). Johhny Dains was killed by friendly fire returning from a victory over Kaawa.[77][78] Of 33 PBYs in Hawaii, 24 were destroyed, and six others damaged beyond repair. (The three on patrol returned undamaged.) Friendly fire brought down some U.S. planes on top of that, including five from an inbound flight from Enterprise. Japanese attacks on barracks killed additional personnel.

Fifty-five Japanese airmen and nine submariners were killed in the action, and one was captured. Of Japan's 414[64] available planes, 29 were lost during the battle[79] (nine in the first attack wave, 20 in the second),[N18] with another 74 damaged by antiaircraft fire from the ground.

Possible third wave

Several Japanese junior officers, including Mitsuo Fuchida and Minoru Genda, the chief architect of the attack, urged Nagumo to carry out a third strike in order to destroy as much of Pearl Harbor's fuel and torpedo[N19] storage, maintenance, and dry dock facilities as possible;[80] and the captains of the other five carriers in the formation reported they were willing and ready to carry out a third strike.[81] Military historians have suggested the destruction of these would have hampered the U.S. Pacific Fleet far more seriously than loss of its battleships.[82] If they had been wiped out, 'serious American operations in the Pacific would have been postponed for more than a year';[83] according to American Admiral Chester Nimitz, later Commander in Chief of the Pacific Fleet, 'it would have prolonged the war another two years.'[84] Nagumo, however, decided to withdraw for several reasons: American anti-aircraft performance had improved considerably during the second strike, and two thirds of Japan's losses were incurred during the second wave.[85] Nagumo felt if he launched a third strike, he would be risking three quarters of the Combined Fleet's strength to wipe out the remaining targets (which included the facilities) while suffering higher aircraft losses.[85]

The location of the American carriers remained unknown. In addition, the admiral was concerned his force was now within range of American land-based bombers.[85] Nagumo was uncertain whether the U.S. had enough surviving planes remaining on Hawaii to launch an attack against his carriers.[86]

A third wave would have required substantial preparation and turnaround time, and would have meant returning planes would have had to land at night. At the time, only the (British) Royal Navy had developed night carrier techniques, so this was a substantial risk.[87]

Weather had deteriorated notably since the first and second wave launching, and rough seas complicated takeoff and landing for a third wave attack.

The task force's fuel situation did not permit him to remain in waters north of Pearl Harbor much longer, since he was at the very limit of logistical support. To do so risked running unacceptably low on fuel, perhaps even having to abandon destroyers en route home.[88] He believed the second strike had essentially satisfied the main objective of his mission—the neutralization of the Pacific Fleet—and did not wish to risk further losses.[89] Moreover, it was Japanese Navy practice to prefer the conservation of strength over the total destruction of the enemy.[90]

At a conference aboard Yamato the following morning, Yamamoto initially supported Nagumo.[89] In retrospect, sparing the vital dockyards, maintenance shops, and oil depots meant the U.S. could respond relatively quickly to Japanese activities in the Pacific. Yamamoto later regretted Nagumo's decision to withdraw and categorically stated it had been a great mistake not to order a third strike.[91]

Ships lost or damaged


  • Arizona: Exploded; total loss. 1,177 dead.
  • Oklahoma: Capsized, 429 dead. Refloated November 1943; capsized and lost while under tow to the mainland May 1947 [93]
  • West Virginia: two bombs, seven torpedoes, sunk; returned to service July 1944. 106 dead.
  • California: two bombs, two torpedoes, sunk; returned to service January 1944. 100 dead.
  • Nevada: six bombs, one torpedo, beached; returned to service October 1942. 60 dead.
  • Tennessee: two bombs; returned to service February 1942. 5 dead.
  • Maryland: two bombs; returned to service February 1942. 4 dead (including floatplane pilot shot down).
  • Pennsylvania (Kimmel's Flagship):[94] in drydock with Cassin and Downes, one bomb, debris from USS Cassin; remained in service. 9 dead.
  • Ex-battleship (target/AA training ship) Utah: Capsized; total loss. 58 dead.


  • Helena: One torpedo; returned to service January 1942. 20 dead.
  • Raleigh: One torpedo; remained in service.
  • Honolulu: Near miss, light damage; remained in service.


  • Cassin: in drydock with Downes and Pennsylvania, one bomb, burned; returned to service February 1944.
  • Downes: in drydock with Cassin and Pennsylvania, caught fire from Cassin, burned; returned to service November 1943.
  • Shaw: Three bombs; returned to service June 1942.


  • Oglala (minelayer): Damaged by torpedo hit on Helena, capsized; returned to service (as engine-repair ship) February 1944.
  • Vestal (repair ship): Two bombs, blast and fire from Arizona, beached; returned to service by August 1942.
  • Curtiss (seaplane tender): One bomb, one Japanese aircraft; returned to service January 1942. 19 dead.


In the wake of the attack, 15 Medals of Honor, 51 Navy Crosses, 53 Silver Stars, four Navy and Marine Corps Medals, one Distinguished Flying Cross, four Distinguished Service Crosses, one Distinguished Service Medal, and three Bronze Star Medals were awarded to the American servicemen who distinguished themselves in combat at Pearl Harbor.[99] Additionally, a special military award, the Pearl Harbor Commemorative Medal, was later authorized for all military veterans of the attack.

The day after the attack, Roosevelt delivered his famous Infamy Speech to a Joint Session of Congress, calling for a formal declaration of war on the Empire of Japan. Congress obliged his request less than an hour later. On December 11 Germany and Italy, honoring their commitments under the Tripartite Pact, declared war on the United States. The Tripartite Pact was an earlier agreement between Germany, Italy and Japan which had the principal objective of limiting U.S. intervention in any conflicts involving the three nations.[100] The United States Congress issued a declaration of war against Germany and Italy later that same day. Britain actually declared war on Japan nine hours before the US did, partially due to Japanese attacks on Malaya, Singapore and Hong Kong, and partially due to Winston Churchill's promise to declare war 'within the hour' of a Japanese attack on the United States.[101]

The attack was an initial shock to all the Allies in the Pacific Theater. Further losses compounded the alarming setback. Japan attacked the Philippines hours later (because of the time difference, it was December 8 in the Philippines). Only three days after the attack on Pearl Harbor, the Prince of Wales and Repulse were sunk off the coast of Malaya, causing British Prime Minister Winston Churchill later to recollect 'In all the war I never received a more direct shock. As I turned and twisted in bed the full horror of the news sank in upon me. There were no British or American capital ships in the Indian Ocean or the Pacific except the American survivors of Pearl Harbor who were hastening back to California. Over this vast expanse of waters Japan was supreme and we everywhere were weak and naked'.[102]

Throughout the war, Pearl Harbor was frequently used in American propaganda.[103]

One further consequence of the attacks on Pearl Harbor and its aftermath (notably the Niihau Incident) was that Japanese American residents and citizens were relocated to nearby Japanese-American internment camps. Within hours of the attack, hundreds of Japanese American leaders were rounded up and brought to high-security camps such as Sand Island at the mouth of Honolulu harbor and Kilauea Military Camp on the island of Hawaii.[104][105] Later, over 110,000 Japanese Americans, including United States citizens, were removed from their homes and transferred to internment camps in California, Idaho, Utah, Arizona, Wyoming, Colorado, and Arkansas.[106][107]

Niihau Incident

The Japanese planners had determined that some means of rescuing fliers whose aircraft were too badly damaged to return to the carriers was required. The island of Niihau, only 30 minutes flying time from Pearl Harbor, was designated as the rescue point.

The Zero flown by Petty Officer Shigenori Nishikaichi of Hiryu was damaged in the attack on Wheeler, and he flew to the rescue point on Niihau. The aircraft was further damaged on landing. Nishikaichi was helped from the wreckage by one of the native Hawaiian inhabitants, who, aware of the tension between the United States and Japan, took the pilot's maps and other documents. The island's residents had no telephones or radio and were completely unaware of the attack on Pearl Harbor. Nishikaichi enlisted the support of two Japanese-American residents in an attempt to recover the documents. During the ensuing struggles, Nishikaichi was killed, one collaborator committed suicide, and his wife was sent to prison.

The ease with which the local ethnic Japanese residents apparently went to the assistance of Nishikaichi was a source of concern for many, and tended to support those who believed that local Japanese could not be trusted. [108]

Strategic implications

Admiral Hara Tadaichi summed up the Japanese result by saying, 'We won a great tactical victory at Pearl Harbor and thereby lost the war.'[109] While the attack accomplished its intended objective, it turned out to be largely unnecessary. Unbeknownst to Yamamoto, who conceived the original plan, the U.S. Navy had decided as far back as 1935 to abandon 'charging' across the Pacific towards the Philippines in response to an outbreak of war (in keeping with the evolution of Plan Orange).[23] The U.S. instead adopted 'Plan Dog' in 1940, which emphasized keeping the IJN out of the eastern Pacific and away from the shipping lanes to Australia while the U.S. concentrated on defeating Nazi Germany.[110]

Fortunately for the United States, the American aircraft carriers were untouched by the Japanese attack, otherwise the Pacific Fleet's ability to conduct offensive operations would have been crippled for a year or more (given no diversions from the Atlantic Fleet). As it was, the elimination of the battleships left the U.S. Navy with no choice but to rely on its aircraft carriers and submarines—the very weapons with which the U.S. Navy halted and eventually reversed the Japanese advance. While six of the eight battleships were repaired and returned to service, their relatively low speed limited their deployment, and they served mainly in shore bombardment roles. A major flaw of Japanese strategic thinking was a belief that the ultimate Pacific battle would be fought by battleships, in keeping with the doctrine of Captain Alfred Thayer Mahan. As a result, Yamamoto (and his successors) hoarded battleships for a 'decisive battle' that never happened.[111]

Ultimately, targets not on Genda's list, such as the submarine base and the old headquarters building, proved more important than any battleship. It was submarines that immobilized the Imperial Japanese Navy's heavy ships and brought Japan's economy to a virtual standstill by crippling the transportation of oil and raw materials: import of raw materials was down by half what it had been at the end of 1942, 'to a disastrous ten million tons', while oil import 'was almost completely stopped'.[112] Also, the basement of the Old Administration Building was the home of the cryptanalytic unit which contributed significantly to the Midway ambush and the Submarine Force's success.

Present day

Today, the USS Arizona Memorial on the island of Oahu honors the lives lost on the day of the attack. Visitors to the memorial reach it via boats from the naval base at Pearl Harbor. Alfred Preis is the architect responsible for the memorial's design. The structure has a sagging center and its ends strong and vigorous. It commemorates 'initial defeat and ultimate victory' of all lives lost on December 7, 1941.[113] Although December 7 is known as Pearl Harbor Day, it is not considered a federal holiday in the United States. The nation does however, continue to pay homage remembering the thousands injured and killed when attacked by the Japanese in 1941. Schools and other establishments across the country respectfully lower the American flag to half-staff.[114]

Attack on Pearl Harbor[A1]

The war in China continued to be stalemated for the Japanese Army in 1941, and resources began to decline as American embargoes on scrap metal, aviation engines and other materials began to take effect. In July 1941, Japanese forces moved into southern Indo- China, giving them a jumping-off place for attacking southwards. Roosevelt announced the freezing of Japanese assets in the US, and this quickly became a full-scale embargo (initially on the initiative of lesser officials), including, most significantly, oil. The United States now set out its line unequivocally: nothing less than withdrawal from China would bring an end to the embargo. When Roosevelt and Churchill met in August 1941, they agreed that Germany was a greater menace than Japan, but also that Japan might be deterred by a firm stance - and doing so was a concrete contribution the US could make to British prospects, if it restrained the Japanese from attempting to seize the vital resources of Malaya and the East Indies.

The policy, unfortunately, had the opposite effect. The Japanese Army was not inclined to withdraw from China undefeated, but could not secure victory without putting more pressure on Jiang, which it could not do without more resources. The Navy, which saw the US as its major enemy, believed the US would intervene from the Philippines, should Japan attack southwards. Having made a non-aggression pact with the Soviets in April 1941, the Japanese ignored the temptation of war with the Soviets when Germany attacked. The government under Prince Konoye continued to try to find a diplomatic solution, offering to withdraw from Indo-China once the 'China Incident' was settled, but the Americans would not budge. Konoye was replaced by the Minister for War, General Tojo, in October, and while negotiations continued, a deadline was set for the end of November. After that point, it would be war.

The Commander of the Combined Fleet, Admiral Yamamoto, came up with a bold plan to prevent American intervention. As the months passed and no breakthrough was made in Washington, the First Air Fleet under Vice- Admiral Nagumo secretly left its berth in the Inland Sea and sailed under strict radio silence across the empty Northern Pacific.

American cryptanalysts had succeeded, in Operation Magic, in breaking the Japanese diplomatic encryption machine (code-named Purple), and from it began to get clear warnings that the Japanese were preparing military action. It was not clear where this would be, but on 25 November, the US Army Chief of Staff, General Marshall, issued a war warning to all US bases in the Pacific. However, because of the lack of specifics, and poor coordination of communications, when the blow fell it did so with complete surprise. At dawn on Sunday 7 December, aircraft from Nagumo's six carriers attacked the US Pacific Fleet at its moorings at Pearl Harbor in Hawaii, whence it had been sent in April 1940 as a deterrent. It was assumed that the fleet was safe from torpedo attack in this shallow harbour, but the skill of the Japanese pilots disproved this. In two waves, they sank 18 ships, seriously damaging all the American battleships (destroying two), but missing the carriers, which were absent on exercises. They also destroyed 187 aircraft, most of which had been conveniently gathered in the centre of the airfields as protection against sabotage. 2,403 were killed. A third wave was being prepared to attack repair facilities and oil installations, when Nagumo, fearing the fleet would soon be detected (they were actually in little danger), decided to turn for home. This failure to complete the job was to be a grievous mistake, though at the time it appeared that Japan had struck a great blow. Certainly the US Navy was unable to intervene against the main Japanese thrusts into South-East Asia. By attacking before making any declaration of war, while negotiations were proceeding, however, the Japanese made for themselves an implacable foe, which, far from being prepared to accept Japanese conquests as an unpleasant accomplished fact, was now committed to complete victory.

Churchill was elated that the US was finally in the war, and believed that victory was now assured. However, although conspiracy theorists have argued that Roosevelt knew of Japanese intentions and allowed the Pacific Fleet to be attacked so as to overcome isolationist sentiment in the US, it was by no means certain that the Japanese attack would bring the US into the war against Germany, though Britain and the US immediately became allies against Japan. To most Americans, the US's enemy was now Japan, and the Navy wished to transfer ships to the Pacific from their convoy protection activities in the Atlantic. For four days, US involvement against Germany was less likely than it had been for a year. Then Hitler effectively sealed his fate by declaring war on the United States on 11 December. The war was now truly a global conflict. It is likely that he did so to stretch American resources, and give the Japanese better chances of success (thus reducing American ability to supply Britain and the USSR) while also giving his U-boats free rein in the Atlantic, confident that this would tip the balance and secure victory in 1942. If it failed to do so, with US industrial resources fully committed to the war, then in the long term, Hitler, like the Japanese, had sealed his fate.[1]

THE WAR WIDENS - Pearl Harbor[A2]

On 7 December (8 December on the other side of the International Date Line), the Japanese attacked Pearl Harbor without any prior declaration of war, stealing 'the most basic of freedoms: the freedom to choose war and peace',9 as well as achieving a degree of surprise that indicated considerable deficiency in American intelligence gathering and assessment, and that has led to a morass of conspiracy theories.[NB1]

The Americans had considered the prospect of a Japanese pre-emptive strike, but thought the Philippines the most probable target, while the Pacific Command in Hawaii focused on the threat from the nearest Japanese territory, the Marshall Islands, and not from the north, the direction from which the Japanese came. The defences on Oahu were manned for sabotage, not air attack. The Japanese planned to wreck the American Pacific Fleet, but the bombers found battleships, rather than the more crucial aircraft carriers, which were not in harbour; 353 aircraft from six Japanese carriers totally destroyed two American battleships and damaged three more, while nearly 300 American aircraft were destroyed or damaged on the ground.A supporting attack by Japanese submarines accomplished little.The damage to their battleships forced an important shift in American naval planning away from an emphasis on capital ships and, instead, towards carriers. The attack also revealed grave deficiencies in Japanese (as well as American) planning, as well as in the Japanese war machine. Only 45 per cent of naval air requirements had been met by the start of the war, and the last torpedoes employed in the attack were delivered only two days before the fleet sailed, while modification of planes to carry both torpedoes and heavy bombs was also last minute.

Tactically successful, the Japanese had nevertheless failed to destroy Pearl Harbor. Because of the focus on destroying warships, there was no third-wave attack on the fuel and other harbour installations. Had the oil farms (stores) been destroyed, the Pacific Fleet would probably have had to fall back to the base at San Diego. Had the Japanese invaded the island of Oahu, the Americans would have had to do so, but the logistical task facing the Japanese in supporting such an invasion would have been formidable. Furthermore, the course of the war was to reveal that the strategic concepts that underlay the Japanese plan had been gravely flawed. Aside from underrating American economic strength and the resolve of its people, the Japanese had embarked on an attack that was not necessary.

Their fleet was larger than the American Pacific and Asiatic Fleets, particularly in carriers, battleships and cruisers, and the American fleets, as a result, were not in a position to have prevented the Japanese from overrunning British and Dutch colonies. From the point of view of the Pacific naval balance, the Americans had too many warships in the Atlantic.[NB2][A2]

Asking the Question - Who really Benefited from this?

Pearl Harbor Operation Snow

Operation Snow: How a Soviet Mole in FDR's White House Triggered Pearl Harbor by John Koster Hardcover: 350 pages Publisher: Regnery History; 1 edition (September 17, 2012) Language: English ISBN-10: 1596983221 ISBN-13: 978-1596983229 Product Dimensions: 6 x 1 x 9.1 inches

In my opinion this is a must read book and sheds light on a period of our Earth's History which has changed all of us.. Matthew Laird Acred

In "Operation Snow: How a Soviet Mole in FDR's White House Triggered Pearl Harbor", author and World War II magazine columnist John Koster provides incontestable proof that Russia was a driving force behind Pearl Harbor. Americans have long debated the cause of the December 7, 1941 bombing of Pearl Harbor. Many have argued that the attack was a brilliant Japanese military coup, or a failure of U.S. intelligence agencies, or even a conspiracy of the Roosevelt administration. But despite the attention historians have paid to the bombing of Pearl Harbor, the truth about that fateful day has remained a mystery-until now. In "Operation Snow: How a Soviet Mole in FDR's White House Triggered Pearl Harbor", author John Koster uses recently declassified evidence and never-before-translated documents to tell the real story of the day that FDR memorably declared would live in infamy, forever. "Operation Snow" shows how Joseph Stalin and the KGB used a vast network of double-agents and communist sympathizers - most notably, Harry Dexter White - to lead Japan into war against the United States, demonstrating incontestable Soviet involvement behind the bombing of Pearl Harbor. A thrilling tale of espionage, mystery and war, "Operation Snow" will forever change the way we think about Pearl Harbor and World War II.

Forget everything you know -- or think you know -- about the "surprise" attack on Pearl Harbor on Dec. 7, 1941 that wasn't all that surprising to the top leaders in Washington. Koster provides documentation enough for me to modify my views about Pearl Harbor from my reading of Gordon W. Prange's three books about the attack, not to mention Walter Lord's two books --"Day of Infamy" and "Incredible Victory" and John Toland's two books.

Koster writes that Prange -- considered by many to be the definitive historian writing about Pearl Harbor -- "blandly dismissed the plausible warnings by the Yugoslav-German double agent Dusko Popov and the Korean patriot Kilsoo Haan of an attack on Pearl Harbor. "The latter even got the date right....Both Popov and Haan were threatened with retribution if they went public with news of their attempts to warn the government."

In "Operation Snow" -- drawing on the latest intelligence, including newly translated documents -- Koster writes about Harry Dexter White, a Ph.D. economist and assistant treasury secretary who was the Soviet agent of influence and a key figure in Operation Snow. Those with long memories or a knowledge of the often criticized congressional "witch hunts" during the Truman administration may remember the testimony of White at the House Un-American Activities Committee on Aug. 13, 1948. White requested the hearing to clear his name in the wake of allegations by Whittaker Chambers and Elizabeth Bentley that he was a Communist. One of the people questioning him was a little known congressman from California named Richard M. Nixon.

Koster describes how White, a far more intelligent man than his boss, Treasury Secretary Henry Morgenthau Jr. and Morgenthau's boss, President Franklin D. Roosevelt, manipulated both men to promote policies that provoked war with Japan. In his undergraduate years at Harvard, Franklin Roosevelt was considered such a lightweight that, as Koster writes: "The girls at the Seven Sisters colleges, which were courted by Ivy League men, used his initials --FDR-- as an abbreviation for "feather duster" and thought of him as a light-weight, though he was a good football player and a marvel on the dance floor."

"Operation Snow" was devised by the Russians to divert the Japanese into fighting the Americans rather than the Russians. After the Germans attacked Russia on June 22, 1941, Stalin wanted to keep the Japanese from attacking Far East Russia and he used his best spies to convince the Japanese to attack the Americans. In a phone interview from his home in New Jersey, Koster told me that the Soviets figured they'd have divert enough military resources from the fight against the Germans that they'd probably lose the war. After June 22, 1941, the Soviets wanted the Allies to open a second, European front against the Nazis, but they didn't want a second front on their weak Pacific underbelly.

I was pleased to see that Koster gives credit where credit is due (on Pages 161-163 ) with his set-the-record-straight account of one of the most disgraceful episodes in American history, the rounding up of 112,000 Japanese-Americans, confiscating their property and sending them to concentration camps. Koster writes that in the aftermath of the "sneak attack" on Pearl Harbor, racists -- particularly virulent in California, Oregon and Washington state -- called for internment of all Japanese-Americans, which resulted in FDR's Executive Order 9102, which Sen. Robert Taft called the "sloppiest criminal law he had heard of" and which "relocated" men, women and children to isolated camps in the West.

Koster says that three days after Pearl Harbor Treasury Secretary Henry Morgenthau Jr. asked FBI chief J. Edgar Hoover what he thought about rounding up all the Japanese-Americans on the West Coast. "Hoover was appalled," Koster writes, "and bluntly told Morgenthau that Attorney General Francis Biddle would not approve any 'dragnet or roundup procedure.'" Hoover turned out to be wrong, as Biddle, who did oppose the "relocation" went along with FDR's plan. It was a decision that Biddle regretted to his dying day.

Koster writes that Hoover, using intelligence from loyal Japanese American and Korean sources, had already identified the disloyal ones and within three weeks of the attack on Pearl Harbor, the FBI -- along with the Bureau of Naval Intelligence and the Bureau of Army Intelligence -- had arrested 2,192 Japanese within the continental U.S. and another 879 in Hawaii.

In Operation Snow Koster reveals:

  • The previously neglected (and untranslated) sources that expose the Soviet conspiracy
  • How Harry Dexter White got away with one of the most devastating acts of treason in American history
  • How Japan and the United States were manipulated by Russian agents and propaganda
  • How Harry Dexter White continued to act as a Soviet agent into the postwar era, until exposure in August 1948 prompted a disguised suicide.
  • First-hand accounts from Vitali Pavlov, the KGB agent responsible for recruiting White

"Operation Snow" is necessary reading for anyone interested in Pearl Harbor -- if they want the true picture of the events leading up to the Dec. 7, 1941 attack that could have been prevented -- or at least defended against robustly enough to defeat the Japanese and save the world from the horrors that ensued. Koster's "Operation Snow" is history at its best and most readable.

About the Author

John Koster, a former reporter for the Bergen Record in Hackensack, N.J., writes frequently on American history. He is the author of "The Road to Wounded Knee", which won the Sigma Delta Chi award for distinguished public service, and "Custer Survivor", and has written for many historical publications, including Military History, American Heritage, and American History. Koster, a U.S. Army veteran, is fluent in half a dozen languages, and lives in New Jersey with his wife Shizuko Obo, an award-winning children's author.

Pearl Harbor Freedom from Fear: The American People in Depression and War 1929-1945

Another must read book which covers the political and social background from WWI, the Great Depression and WWII on how our political leaders tackle our social issues and more .. Matthew Laird Acred

Freedom From Fear: The American People in Depression and War, 1929-1945 is a Pulitzer Prize-winning book written in 1999 by historian David M. Kennedy. It is part of the Oxford History of the United States. The book covers America's coping with the Great Depression and World War II. In 2000, Freedom From Fear received the Pulitzer Prize for History. It also won the 2000 Francis Parkman Prize, the 2000 Ambassador's Prize and the 2000 California Gold Medal for Literature.

Freedom from Fear: The American People in Depression and War, 1929-1945 (Oxford History of the United States) [Paperback] Paperback: 936 pages Publisher: Oxford University Press, USA; Reprint edition (April 19, 2001) Language: English ISBN-10: 0195144031 ISBN-13: 978-0195144031 Product Dimensions: 5.9 x 2 x 9.1 inches

  List of archive photos showing the Japanese Naval attack on Pearl Harbor 7th Dec 1941

  • Archive Japanese Naval photos taken aboard the Akagi as aircraft leave to attack Perl Harbor 7th Dec 1941 01
  • Archive Japanese Naval photos taken aboard the Shokaku as aircraft leave to attack Perl Harbor 7th Dec 1941 01
  • Archive Japanese Naval photos taken prior to launching the attack on Perl Harbor Hawaii 7th Dec 1941 01
  • Archive US Navy photos showing machine gun emplacement on Ford Island seaplane base Hawaii Dec 1941 01
  • Archive US Navy photos showing the attack on Pearl Harbor B 17 Fortress Hawaii 7th Dec 1941 01
  • Archive US Navy photos showing the attack on Pearl Harbor B 17 Fortress Hickam Field Hawaii 7th Dec 1941 01-02
  • Archive US Navy photos showing the Japanese Naval attack on Bellows Air Field Hawaii 7th Dec 1941 01
  • Archive US Navy photos showing the Japanese Naval attack on Ewa Beach Hawaii 7th Dec 1941 01
  • Archive US Navy photos showing the Japanese Naval attack on Ford Island seaplane base Hawaii 01-05
  • Archive US Navy photos showing the Japanese Naval attack on Pearl Harbor Naval Air Station Kaneohe Bay 01-02
  • Archive USN photos showing a damaged USS Vestal Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing a downed Zero at Fort Kamehameha Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing a Japanese bomber during the attck on Perl Harbor Hawaii 7th Dec 1941 01-02
  • Archive USN photos showing a Japanese midget submarine beached at Oahu Hawaii Dec 1941 01
  • Archive USN photos showing Battleship Row after the attck on Perl Harbor Hawaii 7th Dec 1941 01-06
  • Archive USN photos showing Battleship Row before the attach on Perl Harbor Hawaii 3rd May 1940 01
  • Archive USN photos showing burning Japanese fascilities on Tanambogo Island Solomons 7th Aug 1942 01
  • Archive USN photos showing damaged Zero in flight Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing the aftermath caused by IJN attack on Wheeler Air Field Hawaii 1941 01-03
  • Archive USN photos showing the damaged USS Utah after the attck on Perl Harbor Hawaii 7th Dec 1941 01-12
  • Archive USN photos showing USS Arizona's magazine exploding Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing USS Avocet at Ford Island after the attck on Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing USS California duringr the attck on Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing USS California sinking after the attck on Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing USS Cassin and USS Downes after the attck on Perl Harbor Hawaii 7th Dec 1941 01-02
  • Archive USN photos showing USS Curtiss and USS Medusa after the attck on Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing USS Jason moored at Perl Harbor Hawaii 29th April 1932 01
  • Archive USN photos showing USS Nevada after the attck on Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing USS Northampton entering Perl Harbor Hawaii 8th Dec 1941 01
  • Archive USN photos showing USS Oklahoma being salvaged Perl Harbor Hawaii March 1943 01
  • Archive USN photos showing USS Pittsburgh during aerial bomb tests 8th Oct 1931 01
  • Archive USN photos showing USS Raleigh after the attck on Perl Harbor Hawaii 7th Dec 1941 01
  • Archive USN photos showing USS Raleigh after the attck on Perl Harbor Hawaii 7th Dec 1941 02
  • Archive USN photos showing USS Shaw after the attck on Perl Harbor Hawaii 9th Dec 1941 01-02
  • Archive USN photos showing USS Shaw burning in drydock YFD 2 Perl Harbor Hawaii 7th Dec 1941 01-02
  • Archive USN photos showing USS Widgeon alongside the sunken USS Arizona Perl Harbor Hawaii Dec 1941 01
  • IJN Hiryu Zero A6M2 21 BII 120 Shigenori Nishikaichi crash site Niihau Hawaiian Islands Dec 1941 01

  USAAF and USN Military History Section

The Official Chronology of the U.S. Navy in World War II

Chronology of the USN in WWII

  1939   1940   1941   1942   1943   1944   1945


  1. USCGC Taney (WHEC-37)
  2. Utah and Oglala
  3. Unless otherwise stated, all vessels listed were salvageable.[2]
  4. USS Utah (AG-16, formerly BB-31); the Utah was moored in the space intended to have been occupied by the carrier Enterprise which, returning with a task force, had been expected to enter the channel at 0730 on 7 December. Strong headwinds delayed the refueling of the destroyers, and the task force did not reach Pearl Harbor until dusk the following day.[15]
  5. After it was announced in September iron and steel scrap export would also be prohibited, Japanese Ambassador Horinouchi protested to Secretary Hull on October 8, 1940 warning this might be considered an 'unfriendly act'.[20]
  6. This was mainly a Japanese Navy preference; the Japanese Army would have chosen to attack the Soviet Union.[27]
  7. 'The Dorn report did not state with certainty that Kimmel and Short knew about Taranto. There is, however, no doubt that they did know, as did the Japanese. Lt. Cdr. Takeshi Naito, the assistant naval attaché to Berlin, flew to Taranto to investigate the attack first hand, and Naito subsequently had a lengthy conversation with Cdr. Mitsuo Fuchida about his observations. Fuchida led the Japanese attack on 7 December 1941.'[31]
  8. 'A torpedo bomber needed a long, level flight, and when released, its conventional torpedo would plunge nearly a hundred feet deep before swerving upward to strike a hull. Pearl Harbor deep averages 42 feet. But the Japanese borrowed an idea from the British carrier-based torpedo raid on the Italian naval base of Taranto. They fashioned auxiliary wooden tail fins to keep the torpedoes horizontal, so they would dive to only 35 feet, and they added a breakaway 'nosecone' of soft wood to cushion the impact with the surface of the water.'[32]
  9. She was located by a University of Hawaii research submersible on August 28, 2002 in 400 m (1,300 ft) of water, 6 nmi (11 km) outside the harbor.[49]
  10. While the nine sailors who died in the attack were quickly lionized by the Japanese government as kyūgunshin (The Nine War Heroes), the news of Sakamaki's capture, which had been publicized in US news broadcasts, was kept secret. Even after the war, however, he would receive recriminating correspondence from those who despised him for not sacrificing his own life.
  11. The Japanese Attack on Pearl Harbor, Planning and Execution. First wave: 189 planes, 50 Kates w/bombs, 40 Kates with torpedoes, 54 Vals, 45 Zekes Second wave: 171 planes, 54 Kates w/bombs, 81 Vals, 36 Zekes. The Combat Air Patrol over the carriers alternated 18 plane shifts every two hours, with 18 more ready for takeoff on the flight decks and an additional 18 ready on hangar decks.[64]
  12. In 1941, Hawaii was a half hour different from the majority of other time zones. See UTC−10:30.
  13. In the twenty-five sorties flown, USAF Historical Study No.85 credits six pilots with ten planes destroyed: 1st Lt Lewis M. Sanders (P-36) and 2nd Lts Philip M Rasmussen (P-36), Gordon H. Sterling Jr. (P-36, killed in action), Harry W. Brown (P-36), Kenneth M. Taylor (P-40, 2), and George S. Welch (P-40, 4). Three of the P-36 kills were not verified by the Japanese and may have been shot down by naval anti-aircraft fire.
  14. Odd though it may sound, 'not' is correct, in keeping with standard Navy telegraphic practice. This was confirmed by Beloite and Beloite after years of research and debate.
  15. The gunners that did get in action scored most of the victories against Japanese aircraft that morning, including the first of the attack by Tautog, and Dorie Miller's Navy Cross-worthy effort. Miller was an African-American cook aboard West Virginia who took over an unattended anti-aircraft gun on which he had no training. He was the first African-American sailor to be awarded the Navy Cross.
  16. Navy and Marines: 2,117 killed in action or died of wounds, 779 wounded; Army 215 killed in action or died of wounds, 360 wounded.[4]
  17. The wreck has become a memorial to those lost that day, most of whom remain within the ship. She continues to leak small amounts of fuel oil, over 60 years after the attack.
  18. USAAF pilots of the 46th and 47th Pursuit Squadrons, 15th Pursuit Group, claim to have destroyed 10.
  19. In the event, loss of these might have been a net benefit to the U.S. Blair, passim.
  20. Commander Edward Ellsberg was ordered to Massawa as his replacement, to assist the British in clearing scuttled Italian and German ships. This arguably delayed by several months British hopes for a useful port on the Red Sea. Commander Edward Ellsberg, O.B.E.

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  6. Gailey 1995
  7. 'Pearl Harbor Casualty List'. Retrieved 2012-12-07.
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  13. Parillo 2006, p. 288
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This webpage was updated 4th October 2022