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Attack on Pearl Harbor

The attack on Pearl Harbor[nb 3] was a surprise military strike by the Imperial Japanese Navy Air Service upon the United States against the American naval base at Pearl Harbor in Honolulu, Hawaii, just before 8:00 a.m. (local time) on Sunday, December 7, 1941. The United States was a neutral country at the time; the attack on Hawaii and other U.S. territories led the country to formally enter World War II on the side of the Allies the following day. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI,[nb 4] and as Operation Z during its planning.[14][15][16]

"December 7, 1941" redirects here. For the date, see December 1941 § December 7, 1941 (Sunday).

The attack was preceded by months of negotiations between the United States and Japan over the future of the Pacific. Japanese demands included that the United States end its sanctions against Japan, cease aiding China in the Second Sino-Japanese war, and allow Japan to access the resources of the Dutch East Indies. Anticipating a negative response, Japan sent out its naval attack groups in November 1941 just prior to receiving the Hull note—the United States demand that Japan withdraw from China and French Indochina. Japan intended the attack as a preventive action. Its aim was to prevent the United States Pacific Fleet from interfering with its planned military actions in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and those of the United States. Over the course of seven hours, there were coordinated Japanese attacks on the U.S.-held Philippines, Guam, and Wake Island and on the British Empire in Malaya, Singapore, and Hong Kong.[17]


The attack commenced at 7:48 a.m. Hawaiian time (6:18 p.m. GMT).[nb 5] The base was attacked by 353 Imperial Japanese aircraft (including fighters, level and dive bombers, and torpedo bombers) in two waves, launched from six aircraft carriers.[18] Of the eight United States Navy battleships present, all were damaged and four were sunk. All but USS Arizona were later raised, and six were returned to service and went on to fight in the war. The Japanese also sank or damaged three cruisers, three destroyers, an anti-aircraft training ship,[nb 6] and one minelayer. More than 180 US aircraft were destroyed.[20] A total of 2,403 Americans were killed and 1,178 others were wounded, making it the deadliest event ever recorded in Hawaii.[21] Important base installations, such as the power station, dry dock, 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 129 servicemen killed.[7][8] Kazuo Sakamaki, the commanding officer of one of the submarines, was captured.


Japan declared war on the United States and the British Empire later that day (December 8 in Tokyo), but the declarations were not delivered until the following day. The British government declared war on Japan immediately after learning that their territory had also been attacked, while the following day (December 8), the United States Congress declared war on Japan. On December 11, though they had no formal obligation to do so under the Tripartite Pact with Japan, Germany and Italy each declared war on the United States, which responded with a declaration of war against Germany and Italy.


While there were historical precedents for the unannounced military action by Japan, the lack of any formal warning, as required by the Hague Convention of 1907, and the perception that the attack had been unprovoked, led then-President Franklin D. Roosevelt, in the opening line of his speech to a Joint Session of Congress the following day, to famously label December 7, 1941, "a date which will live in infamy".

1st Group

[100]

2nd Group

Aichi D3A

3rd Group

Mitsubishi A6M "Zero"

(Rear Admiral Isaac C. Kidd's flagship of Battleship Division One): hit by four armor-piercing bombs, exploded; total loss, not salvaged. 1,177 dead. Later memorialized.

Arizona

: hit by five torpedoes, capsized; total loss, salvaged, sank en route to scrapping May 1947. 429 dead.

Oklahoma

: hit by two bombs, seven torpedoes, sunk; returned to service July 1944. 106 dead.

West Virginia

: hit by two bombs, two torpedoes, sunk; returned to service January 1944. 104 dead.[145]

California

: hit by six bombs, one torpedo, beached; returned to service October 1942. 60 dead.

Nevada

(Admiral Husband E. Kimmel's flagship of the United States Pacific Fleet):[146] in dry dock with Cassin and Downes, hit by one bomb and debris from USS Cassin; remained in service. 9 dead.

Pennsylvania

: hit by two bombs; returned to service February 1942. 5 dead.

Tennessee

: hit by two bombs; returned to service February 1942. 4 dead (including floatplane pilot shot down).

Maryland

Salvage[edit]

After a systematic search for survivors, Captain Homer N. Wallin was ordered to lead a formal salvage operation.[149][nb 20]


Around Pearl Harbor, divers from the Navy (shore and tenders), the Pearl Harbor Naval Shipyard, and civilian contractors (Pacific Bridge Company and others) began work on the ships that could be refloated. They patched holes, cleared debris, and pumped water out of ships. Melvin Storer and other Navy divers worked inside the damaged ships.[151] Within six months, five battleships and two cruisers were patched or refloated so they could be sent to shipyards in Pearl Harbor and on the mainland for extensive repair.[152]


Intensive salvage operations continued for another year, a total of some 20,000 man-hours under water.[153] Arizona and the target ship Utah were too heavily damaged for salvage and remain where they were sunk,[154] with Arizona becoming a war memorial. Oklahoma, while successfully raised, was never repaired and capsized while under tow to the mainland in 1947. The Nevada proved particularly difficult to raise and repair; two men involved in the operation died after inhaling poisonous gases that had accumulated in the ship's interior.[152] When feasible, armament and equipment were removed from vessels too damaged to repair and put to use aboard other craft.

(archived) from Navy History & Heritage Command

Overview

on History.com

Account (with Video)

on ThoughtCo.

The Attack on Pearl Harbor

(archived) from National Park Service

"Remembering Pearl Harbor:The USS Arizona Memorial" — Teaching with Historic Places (TwHP) lesson plan

Archives & Manuscripts Department, University of Hawaii at Manoa Library

Hawaii War Records Depository

on ibiblio.org

7 December 1941, The Air Force Story

(PDFs or readable online) on ibiblio.org

The "Magic" Background

on ibiblio.org

The Congressional investigation

LTC Jeffrey J. Gudmens; COL Timothy R. Reese (2009). (PDF) (Report). Combat Studies Institute.

Staff Ride Handbook for the Attack on Pearl Harbor, 7 December 1941: A Study of Defending America

collected news and commentary at The New York Times

Pearl Harbor