1865

On April 9, 1865, Confederate Gen. Robert E. Lee surrendered his army to Union Lt. Gen. Ulysses S. Grant at Appomattox Court House in Virginia after four years of Civil War in the United States.

1940

During World War II, Germany invaded Denmark and Norway.

1959

NASA introduced the “Mercury Seven:” Scott Carpenter, Gordon Cooper, John Glenn, Gus Grissom, Wally Schirra, Alan Shepard and Donald “Deke” Slayton.