Could someone provide a summary of the Day of Infamy?

The "Day of Infamy" refers to December 7, 1941, the day the Japanese launched a surprise military strike against the United States naval base at Pearl Harbor, Hawaii. President Franklin D. Roosevelt famously used the term "a date which will live in infamy" in his speech to Congress on December 8, 1941 as he asked for a declaration of war against Japan.

Here is a summary of the events on that day: On the morning of December 7, 1941, the Japanese Imperial Navy launched an attack on the U.S. Pacific Fleet stationed at Pearl Harbor. The attack was intended to prevent the United States from interfering with Japanese military actions in Southeast Asia by disabling the Pacific Fleet. More than 350 Japanese aircraft, including fighters, bombers and torpedo planes launched in two waves from six aircraft carriers attacked the base. The attack caught the U.S. forces largely by surprise and resulted in significant casualties and damage. Eight U.S. battleships were damaged, with four being sunk. The attack also destroyed or damaged numerous cruisers, destroyers, and hundreds of aircraft. - Over 2,400 Americans were killed and about 1,200 were wounded during the attack. Japan's declarations of war were not delivered until after the attack making it a surprise assault that sparked outrage in the American public. The attack led to the United States' formal entry into World War II on the side of the Allies the following day, December 8, 1941, as Congress declared war on Japan with just one dissenting vote. The attack on Pearl Harbor was a pivotal moment in World War II, marking the entry of the United States into the global conflict. Prior to this event, the U.S. had maintained a position of neutrality, although it was providing economic and material support to Britain and other Allied powers through the Lend Lease Act. The shock and anger caused by the surprise attack created widespread support among Americans for the war effort which had been somewhat divided over the issue of intervention.

The idea to attack Pearl Harbor was conceived by Admiral Isoroku Yamamoto the commander in chief of Japan's Combined Fleet. He believed that Japan needed to neutralize the U.S. Pacific Fleet to ensure Japanese dominance in the Pacific. The Pearl Harbor attack was part of a larger strategy in which Japan sought to quickly conquer Southeast Asian territorie rich in resources while preventing American military response.

In the aftermath of the attack, the U.S. Navy and American industry mobilized rapidly repairing ships and building new ones while American men and women enlisted in the armed forces in large numbers. This response contributed significantly to the Allied powers' eventual victory in World War II.

The attack on Pearl Harbor also had long-term effects on U.S. foreign policy and military strategy leading to the establishment of a permanent military presence in the Pacific and the policy of forward-based defense. December 7 has since been recognized in the United States as National Pearl Harbor Remembrance Day to honor the lives lost on that fateful day.