The attack on Pearl Harbor occurred on December 7, 1941, leading the U.S. to enter World War II.

The Japanese Imperial Navy unexpectedly attacked the American naval facility in Pearl Harbor, Hawaii, on December 7, 1941. In addition to killing approximately 2,400 Americans and injuring many more, the attack destroyed a large number of ships and planes. The United States entered World War II as a result of this incident, and the next day President Franklin D. Roosevelt declared war on Japan. Every year, National Pearl Harbor Remembrance Day honors the attack on Pearl Harbor, which continues to be a significant turning point in American history. It represents the American people's tenacity and the start of American engagement in the world war.