On Dec. 7, 1941, Japan launched a surprise attack on the American naval base at Pearl Harbor, Hawaii. The strike marked the culmination of a decade of rising tensions as Japan expanded its empire across East Asia and the Pacific. With its industrial capacity unable to match the United States in a long-term war, Japanese leaders opted for a preemptive blow designed to cripple American naval power and delay any effective American response.
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This animated visualization reconstructs the two-wave Pearl Harbor strike—showing the flight paths, ship positions, and timing that allowed Japan’s carrier force to severely damage Battleship Row in just 110 minutes while catching US defenses off guard.
Japan’s air assault sank or damaged 18 warships (including eight battleships) and destroyed 188 aircraft, killing 2,403 Americans, yet all three Pacific Fleet aircraft carriers were absent and survived, and vital infrastructure like oil depots and repair yards remained intact—preserving core US naval power and enabling a rapid recovery. Watch original reporting here.
Between 1931 and 1941, Japan seized Manchuria, launched a full-scale war in China and occupied French Indochina, moves that intensified its demand for strategic resources and triggered escalating US-led embargoes—particularly the 1941 oil cutoff—which sharply raised the risk of war between the two countries.
Japan's existing Type 91 torpedoes weighed two tons and slammed into the water at 200 mph, diving 150 feet before rising again. Pearl Harbor was only 40 feet deep, requiring engineers to modify the existing torpedoes for the attack.
In a Gallup poll taken days after the attack, an extraordinary 97% of Americans approved Congress declaring war on Japan—reflecting overwhelming national unity in the wake of the strike.
A World War II-era commercial flight was forced to change course when Pearl Harbor was bombed, leading the 12-member crew on the world's first commercial flight to circumnavigate the globe. The Boeing 314 crossed the equator four times during the journey, which totaled more than 30,000 miles and required the crew to strip the plane of any identifying marks.
In late 1941, Japan possessed the world’s most powerful carrier fleet and the best-trained naval aviators, giving it a short-term edge over the US. But Japan couldn’t replace ships or pilots quickly, and US industry would soon outbuild it.
Between September 1940 and December 7, 1941, the United States remained officially neutral—yet President Roosevelt incrementally shifted policy from “cash‑and‑carry” to Lend‑Lease, funneling critical military aid to Britain and other allies without entering the war.
On Nov. 26, 1941, Secretary of State Cordell Hull issued a note calling on Japan to withdraw from China and Indochina—terms Tokyo saw as impossible. The note confirmed to Japanese leaders that diplomacy had collapsed, accelerating plans for the Pearl Harbor strike (which had been formally approved Nov. 5).
After a Japanese pilot crash-landed on the Hawaiian island of Niʻihau, residents first sheltered him. Once news of the Pearl Harbor attack arrived, two locals tried to help him escape, leading to a violent struggle in which Native Hawaiians ultimately stopped and killed him.
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