The experiences of those left to support the war effort on the Home Front, combined with those of returning veterans, helped further reveal underlying tensions and led to significant changes in the social history of the United States.

The Museum highlights educational resources for teachers and students that can be used to explore Japanese American incarceration.

Following victory, the Allies turned to the legal system to hold Axis leaders accountable. In an unprecedented series of trials, a new meaning of justice emerged in response to war crimes and crimes against humanity committed by both the Germans and the Japanese throughout the war.

World War II transformed the United States from a midlevel global power to the leader of the “free world.” With this rapid rise in power and influence, the United States had to take on new responsibilities, signaling the beginning of the "American era."

The end of World War II brought unexpected challenges for American servicemembers in both Europe and the Pacific. Fighting forces turned into forces of occupation, working to maintain a fragile peace while living amongst former enemies.

In January of 1941, President Franklin Delano Roosevelt outlined a vision of the future in which people the world over could enjoy four essential freedoms. This vision persisted throughout World War II and came to symbolize the ideals behind the rights of humanity and the pursuit of peace in a postwar world.

Dr. Rob Citino highlights the moments of celebration, as well as realization of the repercussions that followed Allied victory and the end of World War II.

Dr. Rana Mitter depicts how China held a critical role in the Pacific theater during the war as a key ally for the United States. The war's end, however, brought a devastating blow to American diplomacy as China ultimately fell to communism, forever changing the global balance of power in the emerging Cold War.

The United States was not the only leading power on the world stage after the end of World War II; it had a new competitor for this power in the Soviet Union. Tensions between the former allies quickly grew, leading to a new kind of conflict—one heightened with the threat of atomic weapons—that came to dominate global politics for the remainder of the twentieth century.

The war effort demanded developments in the field of science and technology, developments that forever changed life in America and made present-day technology possible.

At 5:29 a.m. (MST) on July 16, 1945, the world’s first atomic bomb detonated in the New Mexican desert, releasing a level of destructive power unknown in the existence of humanity. Emitting as much energy as 21,000 tons of TNT and creating a fireball that measured roughly 2,000 feet in diameter, the first successful test of an atomic bomb, known as the Trinity Test, forever changed the history of the world.

As fighting came to an end in 1945, people the world over faced for the first time the unprecedented extent of destruction and loss of life caused by World War II. As the costs of victory came into devastating focus, the diplomatic responses, rising global tensions between the United States and the Soviet Union, and social disruption that followed in the aftermath of this conflict showed that World War II was truly "the war that changed the world."