Japan won a devastating tactical victory at Pearl Harbor on 7 December 1941, crippling the United States Pacific Fleet in a surprise carrier air raid on the Hawaiian base. Strategically it backfired: the attack brought a united United States into the Second World War, and the aircraft carriers it failed to catch would go on to win the Pacific war.1
Anniversary 7 December 2026 marks the 85th anniversary of the attack on Pearl Harbor in 1941.
Just before 8 a.m. on a quiet Sunday, 7 December 1941, the drone of engines swelled over the Hawaiian island of Oahu. Sailors on the battleships moored at Pearl Harbor looked up to see aircraft banking low, and only when the first bombs fell did the truth land with them: this was no drill. Within two hours the pride of the United States Pacific Fleet lay burning in the shallows, and a nation that had hoped to stay out of the war awoke to find itself thrust into the center of it.2
Part of The greatest battles of the Pacific War · Next: The Doolittle Raid
A plan born of surprise
The raid was the work of Admiral Isoroku Yamamoto, who reasoned that Japan could not win a long war against American industry and so gambled everything on a single crippling blow. His plan sent a carrier task force of six flattops steaming in secret across the northern Pacific, maintaining radio silence, to a launch point a few hundred miles north of Hawaii. From there they would fling their aircraft at the fleet before Washington and Tokyo were even formally at war. It was audacious, meticulously rehearsed, and it depended entirely on catching the Americans asleep. The aviators had rehearsed torpedo runs in shallow water, and bombs had been adapted to pierce the armored decks of the ships. On the morning of the attack, the deception held, and the first pilots found the harbor exactly as they had hoped: crowded, unsuspecting, and unprepared. Even the Army radar station at Opana on northern Oahu, which picked up the incoming formation at 7:02 a.m., could not raise the alarm: its report went to the information center at Fort Shafter, where the officer on duty took the echoes for a flight of American B-17 bombers expected from the mainland.3
Two waves over the harbor
The assault came in two waves. The first, more than 180 aircraft, struck airfields and the moored ships shortly before 8 a.m., torpedo bombers skimming the water while dive bombers and level bombers worked from above. A second wave of similar size followed roughly an hour later, hammering targets through the smoke. American gunners recovered quickly and put up fierce antiaircraft fire, but the opening minutes had already decided the day. The Japanese struck airfields across Oahu to keep US planes on the ground, and for the better part of two hours the harbor was a scene of explosions, capsizing hulls, and men fighting to save their ships and one another.4
Battleship Row ablaze
The heart of the disaster was Battleship Row, where seven of the eight American battleships in port lay moored along Ford Island; the eighth, the fleet flagship USS Pennsylvania, sat in dry dock at the navy yard. The USS Arizona suffered the cruelest fate when a bomb touched off her forward magazine, and the resulting explosion tore the great ship apart and killed around 1,177 of her crew, nearly half of all the dead that day. The USS Oklahoma rolled completely over, trapping men inside her hull. All eight battleships were sunk or damaged, along with many smaller vessels and hundreds of aircraft. In total 2,403 Americans were killed, a toll that stunned the country. Yet the fleet's aircraft carriers were away from Pearl Harbor that morning and escaped untouched, and the raiders left the fuel depots and repair yards largely intact, an omission that would let the base, and the fleet, recover far faster than Japan had gambled.5
A date which will live in infamy
The tactical victory was dazzling, but its strategic verdict fell against Japan almost at once. The very shock that Yamamoto had sought united a divided American public overnight, silencing those who had argued for staying out. The next day President Franklin Roosevelt stood before Congress and called 7 December 1941 a date which will live in infamy, and the United States declared war. Within days Germany and Italy declared war on America in turn, and the full weight of American industry and manpower swung into the global conflict. The battleships sunk in the mud would be raised and many returned to service, the carriers would carry the fight back across the Pacific, and the surprise that had seemed so complete became the spark that doomed the very plan behind it.6
Why did Japan attack Pearl Harbor?
Japan struck Pearl Harbor to put the US Pacific Fleet out of action while it seized the oil and raw materials of Southeast Asia. The American embargo on oil in 1941 left a resource-poor Japan facing what its leaders saw as a threat to national survival, and they chose war to secure the resources needed to finish their war in China. The same offensive, the National WWII Museum notes, also struck the Philippines, Guam, Wake Island, Hong Kong and Malaya. The architect of the raid is profiled among the commanders of the Pacific War.7
How many people died at Pearl Harbor?
The attack killed 2,403 Americans and wounded 1,178, the figures used by both the Naval History and Heritage Command and the National Park Service. The Navy's count includes 68 civilians, most of them killed in Honolulu by badly fused American antiaircraft shells. Navy historians put Japanese losses at 29 aircraft, five midget submarines and fewer than 100 men.8
What ships were sunk at Pearl Harbor?
Twenty-one ships of the Pacific Fleet were sunk or damaged, all eight battleships among them. Only three never returned: the Arizona, wrecked beyond salvage; the Oklahoma, raised but judged too old to repair; and the old target ship Utah. The Arizona and Utah still lie where they sank. Every other ship, including the West Virginia, which went down at her moorings, was raised or repaired.9
How is Pearl Harbor remembered today?
Since a 1994 act of Congress, 7 December has been National Pearl Harbor Remembrance Day. Federal law asks the President to issue a proclamation each year calling for flags at half staff. The National Park Service and the US Navy hold a ceremony at Pearl Harbor National Memorial, with a moment of silence at 7:55 a.m., the minute the attack began. Fewer veterans of that morning attend each year: in December 2025 the Associated Press counted only 12 living survivors, all centenarians, and none could travel to Hawaii for the ceremony. The carriers that escaped the raid struck back six months later at Midway.10
