Pearl Harbor

The United States Enters the War
The United States entered World War II on December 7, 1941, when Japan attacked the naval and air base at Pearl Harbor. Four days later, Adolf Hitler declared war on the United States.

The USS Shaw explodes during Japan's surprise attack on Pearl Harbor, which killed 2,403 Americans.

Courtesy National Archives, photo no. 80-G-16871

"We are now in the midst of a war, not for conquest, not for vengeance, but for a world in which this nation, and all that this nation represents, will be safe for our children."

President Franklin D. Roosevelt, December 9, 1941

President Franklin D. Roosevelt signs the Declaration of War against Japan, December 8, 1941.

Courtesy National Archives, photo no. 79-AR-82