The attack commenced at 7:48 a.m. Hawaiian Time (18:18 GMT).[nb 3][16] The base was attacked by 353[17] Imperial Japanese aircraft (including fighters, level and dive bombers, and torpedo bombers) in two waves, launched from six aircraft carriers.[17] All eight U.S. Navy battleships were damaged, with four sunk. All but the 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 4] and one minelayer. One hundred eighty-eight U.S. aircraft were destroyed; 2,403 Americans were killed and 1,178 others were wounded.[19] 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 64 servicemen killed. One Japanese sailor, Kazuo Sakamaki, was captured.
The surprise 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,[20][21] and several days later, on December 11, Germany and Italy each declared war on the U.S. The U.S. responded with a declaration of war against Germany and Italy. Domestic support for non-interventionism, which had been fading since the Fall of France in 1940,[22] disappeared.[21]