Attack on Pearl Harbor

Attack on Pearl Harbor
Part of the Pacific Theater of World War II
Photograph from a Japanese plane of Battleship Row at the beginning of the attack. The explosion in the center is a torpedo strike on the USS Oklahoma. Two attacking Japanese planes can be seen: one over the USS Neosho and one over the Naval Yard.
Date December 7, 1941 Location Primarily Pearl Harbor, Hawaii Territory, United States Result Japanese major tactical victory United States declaration of war on the Empire of Japan Nazi German and fascist Italian declaration of war on the United States.
Belligerents
United States	Empire of Japan
Commanders and leaders
Husband Kimmel Walter Short Isaac Kidd †	Chuichi Nagumo Isoroku Yamamoto
Strength
8 battleships 8 cruisers 30 destroyers 4 submarines 49 other ships ~390 aircraft	Mobile Unit: 6 aircraft carriers 2 battleships 2 heavy cruisers 1 light cruiser 9 destroyers 8 tankers 23 fleet submarines 5 midget submarines 414 aircraft
Casualties and losses
4 battleships sunk 3 battleships damaged 1 battleship grounded 2 destroyers sunk 1 other ship sunk 3 cruisers damaged 1 destroyer damaged 3 other ships damaged 188 aircraft destroyed 155 aircraft damaged 2,402 killed 1,247 wounded	4 midget submarines sunk 1 midget submarine grounded 29 aircraft destroyed 64 killed 1 captured
Civilian casualties: 57 killed 35 wounded

The attack on Pearl Harbor (called Hawaii Operation or Operation AI by the Japanese Imperial General Headquarters (Operation Z in planning) and the Battle of Pearl Harbor) 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). 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 Japanese fighters, bombers and torpedo planes in two waves, launched from six aircraft carriers. All eight U.S. Navy battleships were damaged, with four being sunk. Of the eight damaged, six were raised, repaired and returned to service later in the war. The Japanese also sank or damaged three cruisers, three destroyers, an anti-aircraft training ship, and one minelayer. 188 U.S. aircraft were destroyed; 2,402 Americans were killed and 1,282 wounded. 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 isolationism, which had been strong, 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".