Selections from the 1943 Clark Gable film.
The staggering death tolls of the Civil War permanently altered the character of the republic and the psyche of the American people.
American comandante William Morgan went to Cuba to help Fidel Castro return the country to a democracy. Instead, four years later, he was executed.
On June 6, 1944, Allied troops invaded Normandy, fighting to free Europe from Nazi occupation and end World War II.
The Battle of the Bulge was the biggest and bloodiest single battle American soldiers ever fought.
The acquittal of the murderers of Chicago teen Emmett Till mobilized the civil rights movement.
The U.S. and the Soviet Union race to build the hydrogen bomb during the Cold War, thus beginning the nuclear arms race.
The U.S. government's response to the Holocaust was slow and fueled by complex social and political factors.
The international race to develop biological weapons during the 20th century.