At about 7:55 am on December 7, 1941, Japanese fighter planes attacked the Naval Base Pearl Harbor, Hawai’i. It was the first wave of surprise attacks that would continue until about 9:45 am. Within those two hours, the Japanese destroyed or damaged 19 American naval vessels, including eight battleships, and nearly 300 airplanes. More than 2,300 US service personnel were killed, with more than 1,100 wounded.
The attack was meant to destroy the US Pacific Fleet. There was extensive damage, and many lost their lives. However, the assault was considered a failure for the Japanese Imperial Army, because repair yards, fuel reserves, and the submarine base were left with little damage.
On December 8, President Franklin Roosevelt asked Congress to declare war on Japan, which it approved with just one opposing vote. US-Japan relations had already suffered in the months before the attack because of failed negotiations between the countries. These negotiations had been about Japan’s expansion in Asia and the US’ support of the Allies in the war.